Copyright © 2003-2014 Kepler Project.
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use, copy,
modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

# $Id: Makefile,v 1.36 2009/09/21 17:02:44 mascarenhas Exp $
T= lfs
CONFIG= ./config
include $(CONFIG)
SRCS= src/$T.c
OBJS= src/$T.o
lib: src/lfs.so
src/lfs.so: $(OBJS)
	$(CC) $(CFLAGS) $(LIB_OPTION) -o src/lfs.so $(OBJS)
install:
	mkdir -p $(LUA_LIBDIR)
	cp src/lfs.so $(LUA_LIBDIR)
clean:
	rm -f src/lfs.so $(OBJS)

# Installation directories
# Default installation prefix
PREFIX=/usr/local
# System's libraries directory (where binary libraries are installed)
LUA_LIBDIR= $(LUA_SRC_PATH)/lib
# Lua includes directory
LUA_INC= $(LUA_INC_PATH)/
# OS dependent
#LIB_OPTION= -shared #for Linux
LIB_OPTION= -bundle -undefined dynamic_lookup #for MacOS X
OPENSSL_INC=/usr/local/opt/openssl/include/
LIBNAME= $T.so.$V
# Compilation directives
WARN= -O2 -Wall -fPIC -W -Waggregate-return -Wcast-align -Wmissing-prototypes -Wnested-externs -Wshadow -Wwrite-strings -pedantic
INCS= -I$(LUA_INC) -I$(OPENSSL_INC)
CFLAGS= $(WARN) $(INCS)
CC= gcc
# $Id: config,v 1.21 2007/10/27 22:42:32 carregal Exp $

/*
** LuaFileSystem
** Copyright Kepler Project 2003 - 2016 (http://keplerproject.github.io/luafilesystem)
**
** File system manipulation library.
** This library offers these functions:
**   lfs.attributes (filepath [, attributename | attributetable])
**   lfs.chdir (path)
**   lfs.currentdir ()
**   lfs.dir (path)
**   lfs.link (old, new[, symlink])
**   lfs.lock (fh, mode)
**   lfs.lock_dir (path)
**   lfs.mkdir (path)
**   lfs.rmdir (path)
**   lfs.setmode (filepath, mode)
**   lfs.symlinkattributes (filepath [, attributename])
**   lfs.touch (filepath [, atime [, mtime]])
**   lfs.unlock (fh)
*/
#ifndef LFS_DO_NOT_USE_LARGE_FILE
#ifndef _WIN32
#ifndef _AIX
#define _FILE_OFFSET_BITS 64 /* Linux, Solaris and HP-UX */
#else
#define _LARGE_FILES 1 /* AIX */
#endif
#endif
#endif
#ifndef LFS_DO_NOT_USE_LARGE_FILE
#define _LARGEFILE64_SOURCE
#endif
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <sys/stat.h>
#ifdef _WIN32
  #include <direct.h>
  #include <windows.h>
  #include <io.h>
  #include <sys/locking.h>
  #ifdef __BORLANDC__
    #include <utime.h>
  #else
    #include <sys/utime.h>
  #endif
  #include <fcntl.h>
  /* MAX_PATH seems to be 260. Seems kind of small. Is there a better one? */
  #define LFS_MAXPATHLEN MAX_PATH
#else
  #include <unistd.h>
  #include <dirent.h>
  #include <fcntl.h>
  #include <sys/types.h>
  #include <utime.h>
  #include <sys/param.h> /* for MAXPATHLEN */
  #define LFS_MAXPATHLEN MAXPATHLEN
#endif
#include <lua.h>
#include <lauxlib.h>
#include <lualib.h>
#include "lfs.h"
#define LFS_VERSION "1.6.3"
#define LFS_LIBNAME "lfs"
#if LUA_VERSION_NUM >= 503 /* Lua 5.3 */
#ifndef luaL_optlong
#define luaL_optlong luaL_optinteger
#endif
#endif
#if LUA_VERSION_NUM < 502
#  define luaL_newlib(L,l) (lua_newtable(L), luaL_register(L,NULL,l))
#endif
/* Define 'strerror' for systems that do not implement it */
#ifdef NO_STRERROR
#define strerror(_)     "System unable to describe the error"
#endif
#define DIR_METATABLE "directory metatable"
typedef struct dir_data {
        int  closed;
#ifdef _WIN32
        intptr_t hFile;
        char pattern[MAX_PATH+1];
#else
        DIR *dir;
#endif
} dir_data;
#define LOCK_METATABLE "lock metatable"
#ifdef _WIN32
 #ifdef __BORLANDC__
  #define lfs_setmode(file, m)   (setmode(_fileno(file), m))
  #define STAT_STRUCT struct stati64
 #else
  #define lfs_setmode(file, m)   (_setmode(_fileno(file), m))
  #define STAT_STRUCT struct _stati64
 #endif
#define STAT_FUNC _stati64
#define LSTAT_FUNC STAT_FUNC
#else
#define _O_TEXT               0
#define _O_BINARY             0
#define lfs_setmode(file, m)   ((void)file, (void)m, 0)
#define STAT_STRUCT struct stat
#define STAT_FUNC stat
#define LSTAT_FUNC lstat
#endif
/*
** Utility functions
*/
static int pusherror(lua_State *L, const char *info)
{
        lua_pushnil(L);
        if (info==NULL)
                lua_pushstring(L, strerror(errno));
        else
                lua_pushfstring(L, "%s: %s", info, strerror(errno));
        lua_pushinteger(L, errno);
        return 3;
}
static int pushresult(lua_State *L, int i, const char *info)
{
        if (i==-1)
                return pusherror(L, info);
        lua_pushinteger(L, i);
        return 1;
}
/*
** This function changes the working (current) directory
*/
static int change_dir (lua_State *L) {
        const char *path = luaL_checkstring(L, 1);
        if (chdir(path)) {
                lua_pushnil (L);
                lua_pushfstring (L,"Unable to change working directory to '%s'\n%s\n",
                                path, chdir_error);
                return 2;
        } else {
                lua_pushboolean (L, 1);
                return 1;
        }
}
/*
** This function returns the current directory
** If unable to get the current directory, it returns nil
**  and a string describing the error
*/
static int get_dir (lua_State *L) {
#ifdef NO_GETCWD
    lua_pushnil(L);
    lua_pushstring(L, "Function 'getcwd' not provided by system");
    return 2;
#else
    char *path = NULL;
    /* Passing (NULL, 0) is not guaranteed to work. Use a temp buffer and size instead. */
    size_t size = LFS_MAXPATHLEN; /* initial buffer size */
    int result;
    while (1) {
        path = realloc(path, size);
        if (!path) /* failed to allocate */
            return pusherror(L, "get_dir realloc() failed");
        if (getcwd(path, size) != NULL) {
            /* success, push the path to the Lua stack */
            lua_pushstring(L, path);
            result = 1;
            break;
        }
        if (errno != ERANGE) { /* unexpected error */
            result = pusherror(L, "get_dir getcwd() failed");
            break;
        }
        /* ERANGE = insufficient buffer capacity, double size and retry */
        size *= 2;
    }
    free(path);
    return result;
#endif
}
/*
** Check if the given element on the stack is a file and returns it.
*/
static FILE *check_file (lua_State *L, int idx, const char *funcname) {
#if LUA_VERSION_NUM == 501
        FILE **fh = (FILE **)luaL_checkudata (L, idx, "FILE*");
        if (*fh == NULL) {
                luaL_error (L, "%s: closed file", funcname);
                return 0;
        } else
                return *fh;
#elif LUA_VERSION_NUM >= 502 && LUA_VERSION_NUM <= 503
        luaL_Stream *fh = (luaL_Stream *)luaL_checkudata (L, idx, "FILE*");
        if (fh->closef == 0 || fh->f == NULL) {
                luaL_error (L, "%s: closed file", funcname);
                return 0;
        } else
                return fh->f;
#else
#error unsupported Lua version
#endif
}
/*
**
*/
static int _file_lock (lua_State *L, FILE *fh, const char *mode, const long start, long len, const char *funcname) {
        int code;
#ifdef _WIN32
        /* lkmode valid values are:
           LK_LOCK    Locks the specified bytes. If the bytes cannot be locked, the program immediately tries again after 1 second. If, after 10 attempts, the bytes cannot be locked, the constant returns an error.
           LK_NBLCK   Locks the specified bytes. If the bytes cannot be locked, the constant returns an error.
           LK_NBRLCK  Same as _LK_NBLCK.
           LK_RLCK    Same as _LK_LOCK.
           LK_UNLCK   Unlocks the specified bytes, which must have been previously locked.
           Regions should be locked only briefly and should be unlocked before closing a file or exiting the program.
           http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_crt__locking.asp
        */
        int lkmode;
        switch (*mode) {
                case 'r': lkmode = LK_NBLCK; break;
                case 'w': lkmode = LK_NBLCK; break;
                case 'u': lkmode = LK_UNLCK; break;
                default : return luaL_error (L, "%s: invalid mode", funcname);
        }
        if (!len) {
                fseek (fh, 0L, SEEK_END);
                len = ftell (fh);
        }
        fseek (fh, start, SEEK_SET);
#ifdef __BORLANDC__
        code = locking (fileno(fh), lkmode, len);
#else
        code = _locking (fileno(fh), lkmode, len);
#endif
#else
        struct flock f;
        switch (*mode) {
                case 'w': f.l_type = F_WRLCK; break;
                case 'r': f.l_type = F_RDLCK; break;
                case 'u': f.l_type = F_UNLCK; break;
                default : return luaL_error (L, "%s: invalid mode", funcname);
        }
        f.l_whence = SEEK_SET;
        f.l_start = (off_t)start;
        f.l_len = (off_t)len;
        code = fcntl (fileno(fh), F_SETLK, &f);
#endif
        return (code != -1);
}
#ifdef _WIN32
typedef struct lfs_Lock {
  HANDLE fd;
} lfs_Lock;
static int lfs_lock_dir(lua_State *L) {
  size_t pathl; HANDLE fd;
  lfs_Lock *lock;
  char *ln;
  const char *lockfile = "/lockfile.lfs";
  const char *path = luaL_checklstring(L, 1, &pathl);
  ln = (char*)malloc(pathl + strlen(lockfile) + 1);
  if(!ln) {
    lua_pushnil(L); lua_pushstring(L, strerror(errno)); return 2;
  }
  strcpy(ln, path); strcat(ln, lockfile);
  if((fd = CreateFile(ln, GENERIC_WRITE, 0, NULL, CREATE_NEW,
                FILE_ATTRIBUTE_NORMAL | FILE_FLAG_DELETE_ON_CLOSE, NULL)) == INVALID_HANDLE_VALUE) {
        int en = GetLastError();
        free(ln); lua_pushnil(L);
        if(en == ERROR_FILE_EXISTS || en == ERROR_SHARING_VIOLATION)
                lua_pushstring(L, "File exists");
        else
                lua_pushstring(L, strerror(en));
        return 2;
  }
  free(ln);
  lock = (lfs_Lock*)lua_newuserdata(L, sizeof(lfs_Lock));
  lock->fd = fd;
  luaL_getmetatable (L, LOCK_METATABLE);
  lua_setmetatable (L, -2);
  return 1;
}
static int lfs_unlock_dir(lua_State *L) {
  lfs_Lock *lock = (lfs_Lock *)luaL_checkudata(L, 1, LOCK_METATABLE);
  if(lock->fd != INVALID_HANDLE_VALUE) {    
    CloseHandle(lock->fd);
    lock->fd=INVALID_HANDLE_VALUE;
  }
  return 0;
}
#else
typedef struct lfs_Lock {
  char *ln;
} lfs_Lock;
static int lfs_lock_dir(lua_State *L) {
  lfs_Lock *lock;
  size_t pathl;
  char *ln;
  const char *lockfile = "/lockfile.lfs";
  const char *path = luaL_checklstring(L, 1, &pathl);
  lock = (lfs_Lock*)lua_newuserdata(L, sizeof(lfs_Lock));
  ln = (char*)malloc(pathl + strlen(lockfile) + 1);
  if(!ln) {
    lua_pushnil(L); lua_pushstring(L, strerror(errno)); return 2;
  }
  strcpy(ln, path); strcat(ln, lockfile);
  if(symlink("lock", ln) == -1) {
    free(ln); lua_pushnil(L);
    lua_pushstring(L, strerror(errno)); return 2;
  }
  lock->ln = ln;
  luaL_getmetatable (L, LOCK_METATABLE);
  lua_setmetatable (L, -2);
  return 1;
}
static int lfs_unlock_dir(lua_State *L) {
  lfs_Lock *lock = (lfs_Lock *)luaL_checkudata(L, 1, LOCK_METATABLE);
  if(lock->ln) {
    unlink(lock->ln);
    free(lock->ln);
    lock->ln = NULL;
  }
  return 0;
}
#endif
static int lfs_g_setmode (lua_State *L, FILE *f, int arg) {
  static const int mode[] = {_O_BINARY, _O_TEXT};
  static const char *const modenames[] = {"binary", "text", NULL};
  int op = luaL_checkoption(L, arg, NULL, modenames);
  int res = lfs_setmode(f, mode[op]);
  if (res != -1) {
    int i;
    lua_pushboolean(L, 1);
    for (i = 0; modenames[i] != NULL; i++) {
      if (mode[i] == res) {
        lua_pushstring(L, modenames[i]);
        return 2;
      }
    }
    lua_pushnil(L);
    return 2;
  } else {
    return pusherror(L, NULL);
  }
}
static int lfs_f_setmode(lua_State *L) {
  return lfs_g_setmode(L, check_file(L, 1, "setmode"), 2);
}
/*
** Locks a file.
** @param #1 File handle.
** @param #2 String with lock mode ('w'rite, 'r'ead).
** @param #3 Number with start position (optional).
** @param #4 Number with length (optional).
*/
static int file_lock (lua_State *L) {
        FILE *fh = check_file (L, 1, "lock");
        const char *mode = luaL_checkstring (L, 2);
        const long start = (long) luaL_optinteger (L, 3, 0);
        long len = (long) luaL_optinteger (L, 4, 0);
        if (_file_lock (L, fh, mode, start, len, "lock")) {
                lua_pushboolean (L, 1);
                return 1;
        } else {
                lua_pushnil (L);
                lua_pushfstring (L, "%s", strerror(errno));
                return 2;
        }
}
/*
** Unlocks a file.
** @param #1 File handle.
** @param #2 Number with start position (optional).
** @param #3 Number with length (optional).
*/
static int file_unlock (lua_State *L) {
        FILE *fh = check_file (L, 1, "unlock");
        const long start = (long) luaL_optinteger (L, 2, 0);
        long len = (long) luaL_optinteger (L, 3, 0);
        if (_file_lock (L, fh, "u", start, len, "unlock")) {
                lua_pushboolean (L, 1);
                return 1;
        } else {
                lua_pushnil (L);
                lua_pushfstring (L, "%s", strerror(errno));
                return 2;
        }
}
/*
** Creates a link.
** @param #1 Object to link to.
** @param #2 Name of link.
** @param #3 True if link is symbolic (optional).
*/
static int make_link(lua_State *L)
{
#ifndef _WIN32
        const char *oldpath = luaL_checkstring(L, 1);
        const char *newpath = luaL_checkstring(L, 2);
        return pushresult(L,
                (lua_toboolean(L,3) ? symlink : link)(oldpath, newpath), NULL);
#else
        errno = ENOSYS; /* = "Function not implemented" */
        return pushresult(L, -1, "make_link is not supported on Windows");
#endif
}
/*
** Creates a directory.
** @param #1 Directory path.
*/
static int make_dir (lua_State *L) {
        const char *path = luaL_checkstring (L, 1);
        int fail;
#ifdef _WIN32
        fail = _mkdir (path);
#else
        fail =  mkdir (path, S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP |
                             S_IWGRP | S_IXGRP | S_IROTH | S_IXOTH );
#endif
        if (fail) {
                lua_pushnil (L);
        lua_pushfstring (L, "%s", strerror(errno));
                return 2;
        }
        lua_pushboolean (L, 1);
        return 1;
}
/*
** Removes a directory.
** @param #1 Directory path.
*/
static int remove_dir (lua_State *L) {
        const char *path = luaL_checkstring (L, 1);
        int fail;
        fail = rmdir (path);
        if (fail) {
                lua_pushnil (L);
                lua_pushfstring (L, "%s", strerror(errno));
                return 2;
        }
        lua_pushboolean (L, 1);
        return 1;
}
/*
** Directory iterator
*/
static int dir_iter (lua_State *L) {
#ifdef _WIN32
        struct _finddata_t c_file;
#else
        struct dirent *entry;
#endif
        dir_data *d = (dir_data *)luaL_checkudata (L, 1, DIR_METATABLE);
        luaL_argcheck (L, d->closed == 0, 1, "closed directory");
#ifdef _WIN32
        if (d->hFile == 0L) { /* first entry */
                if ((d->hFile = _findfirst (d->pattern, &c_file)) == -1L) {
                        lua_pushnil (L);
                        lua_pushstring (L, strerror (errno));
                        d->closed = 1;
                        return 2;
                } else {
                        lua_pushstring (L, c_file.name);
                        return 1;
                }
        } else { /* next entry */
                if (_findnext (d->hFile, &c_file) == -1L) {
                        /* no more entries => close directory */
                        _findclose (d->hFile);
                        d->closed = 1;
                        return 0;
                } else {
                        lua_pushstring (L, c_file.name);
                        return 1;
                }
        }
#else
        if ((entry = readdir (d->dir)) != NULL) {
                lua_pushstring (L, entry->d_name);
                return 1;
        } else {
                /* no more entries => close directory */
                closedir (d->dir);
                d->closed = 1;
                return 0;
        }
#endif
}
/*
** Closes directory iterators
*/
static int dir_close (lua_State *L) {
        dir_data *d = (dir_data *)lua_touserdata (L, 1);
#ifdef _WIN32
        if (!d->closed && d->hFile) {
                _findclose (d->hFile);
        }
#else
        if (!d->closed && d->dir) {
                closedir (d->dir);
        }
#endif
        d->closed = 1;
        return 0;
}
/*
** Factory of directory iterators
*/
static int dir_iter_factory (lua_State *L) {
        const char *path = luaL_checkstring (L, 1);
        dir_data *d;
        lua_pushcfunction (L, dir_iter);
        d = (dir_data *) lua_newuserdata (L, sizeof(dir_data));
        luaL_getmetatable (L, DIR_METATABLE);
        lua_setmetatable (L, -2);
        d->closed = 0;
#ifdef _WIN32
        d->hFile = 0L;
        if (strlen(path) > MAX_PATH-2)
          luaL_error (L, "path too long: %s", path);
        else
          sprintf (d->pattern, "%s/*", path);
#else
        d->dir = opendir (path);
        if (d->dir == NULL)
          luaL_error (L, "cannot open %s: %s", path, strerror (errno));
#endif
        return 2;
}
/*
** Creates directory metatable.
*/
static int dir_create_meta (lua_State *L) {
        luaL_newmetatable (L, DIR_METATABLE);
        /* Method table */
        lua_newtable(L);
        lua_pushcfunction (L, dir_iter);
        lua_setfield(L, -2, "next");
        lua_pushcfunction (L, dir_close);
        lua_setfield(L, -2, "close");
        /* Metamethods */
        lua_setfield(L, -2, "__index");
        lua_pushcfunction (L, dir_close);
        lua_setfield (L, -2, "__gc");
        return 1;
}
/*
** Creates lock metatable.
*/
static int lock_create_meta (lua_State *L) {
        luaL_newmetatable (L, LOCK_METATABLE);
        /* Method table */
        lua_newtable(L);
        lua_pushcfunction(L, lfs_unlock_dir);
        lua_setfield(L, -2, "free");
        /* Metamethods */
        lua_setfield(L, -2, "__index");
        lua_pushcfunction(L, lfs_unlock_dir);
        lua_setfield(L, -2, "__gc");
        return 1;
}
#ifdef _WIN32
 #ifndef S_ISDIR
   #define S_ISDIR(mode)  (mode&_S_IFDIR)
 #endif
 #ifndef S_ISREG
   #define S_ISREG(mode)  (mode&_S_IFREG)
 #endif
 #ifndef S_ISLNK
   #define S_ISLNK(mode)  (0)
 #endif
 #ifndef S_ISSOCK
   #define S_ISSOCK(mode)  (0)
 #endif
 #ifndef S_ISFIFO
   #define S_ISFIFO(mode)  (0)
 #endif
 #ifndef S_ISCHR
   #define S_ISCHR(mode)  (mode&_S_IFCHR)
 #endif
 #ifndef S_ISBLK
   #define S_ISBLK(mode)  (0)
 #endif
#endif
/*
** Convert the inode protection mode to a string.
*/
#ifdef _WIN32
static const char *mode2string (unsigned short mode) {
#else
static const char *mode2string (mode_t mode) {
#endif
  if ( S_ISREG(mode) )
    return "file";
  else if ( S_ISDIR(mode) )
    return "directory";
  else if ( S_ISLNK(mode) )
        return "link";
  else if ( S_ISSOCK(mode) )
    return "socket";
  else if ( S_ISFIFO(mode) )
        return "named pipe";
  else if ( S_ISCHR(mode) )
        return "char device";
  else if ( S_ISBLK(mode) )
        return "block device";
  else
        return "other";
}
/*
** Set access time and modification values for file
*/
static int file_utime (lua_State *L) {
        const char *file = luaL_checkstring (L, 1);
        struct utimbuf utb, *buf;
        if (lua_gettop (L) == 1) /* set to current date/time */
                buf = NULL;
        else {
                utb.actime = (time_t)luaL_optnumber (L, 2, 0);
                utb.modtime = (time_t) luaL_optinteger (L, 3, utb.actime);
                buf = &utb;
        }
        if (utime (file, buf)) {
                lua_pushnil (L);
                lua_pushfstring (L, "%s", strerror (errno));
                return 2;
        }
        lua_pushboolean (L, 1);
        return 1;
}
/* inode protection mode */
static void push_st_mode (lua_State *L, STAT_STRUCT *info) {
        lua_pushstring (L, mode2string (info->st_mode));
}
/* device inode resides on */
static void push_st_dev (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer) info->st_dev);
}
/* inode's number */
static void push_st_ino (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer) info->st_ino);
}
/* number of hard links to the file */
static void push_st_nlink (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer)info->st_nlink);
}
/* user-id of owner */
static void push_st_uid (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer)info->st_uid);
}
/* group-id of owner */
static void push_st_gid (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer)info->st_gid);
}
/* device type, for special file inode */
static void push_st_rdev (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer) info->st_rdev);
}
/* time of last access */
static void push_st_atime (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer) info->st_atime);
}
/* time of last data modification */
static void push_st_mtime (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer) info->st_mtime);
}
/* time of last file status change */
static void push_st_ctime (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer) info->st_ctime);
}
/* file size, in bytes */
static void push_st_size (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer)info->st_size);
}
#ifndef _WIN32
/* blocks allocated for file */
static void push_st_blocks (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer)info->st_blocks);
}
/* optimal file system I/O blocksize */
static void push_st_blksize (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer)info->st_blksize);
}
#endif
 /*
** Convert the inode protection mode to a permission list.
*/
#ifdef _WIN32
static const char *perm2string (unsigned short mode) {
  static char perms[10] = "---------";
  int i;
  for (i=0;i<9;i++) perms[i]='-';
  if (mode  & _S_IREAD)
   { perms[0] = 'r'; perms[3] = 'r'; perms[6] = 'r'; }
  if (mode  & _S_IWRITE)
   { perms[1] = 'w'; perms[4] = 'w'; perms[7] = 'w'; }
  if (mode  & _S_IEXEC)
   { perms[2] = 'x'; perms[5] = 'x'; perms[8] = 'x'; }
  return perms;
}
#else
static const char *perm2string (mode_t mode) {
  static char perms[10] = "---------";
  int i;
  for (i=0;i<9;i++) perms[i]='-';
  if (mode & S_IRUSR) perms[0] = 'r';
  if (mode & S_IWUSR) perms[1] = 'w';
  if (mode & S_IXUSR) perms[2] = 'x';
  if (mode & S_IRGRP) perms[3] = 'r';
  if (mode & S_IWGRP) perms[4] = 'w';
  if (mode & S_IXGRP) perms[5] = 'x';
  if (mode & S_IROTH) perms[6] = 'r';
  if (mode & S_IWOTH) perms[7] = 'w';
  if (mode & S_IXOTH) perms[8] = 'x';
  return perms;
}
#endif
/* permssions string */
static void push_st_perm (lua_State *L, STAT_STRUCT *info) {
    lua_pushstring (L, perm2string (info->st_mode));
}
typedef void (*_push_function) (lua_State *L, STAT_STRUCT *info);
struct _stat_members {
        const char *name;
        _push_function push;
};
struct _stat_members members[] = {
        { "mode",         push_st_mode },
        { "dev",          push_st_dev },
        { "ino",          push_st_ino },
        { "nlink",        push_st_nlink },
        { "uid",          push_st_uid },
        { "gid",          push_st_gid },
        { "rdev",         push_st_rdev },
        { "access",       push_st_atime },
        { "modification", push_st_mtime },
        { "change",       push_st_ctime },
        { "size",         push_st_size },
        { "permissions",  push_st_perm },
#ifndef _WIN32
        { "blocks",       push_st_blocks },
        { "blksize",      push_st_blksize },
#endif
        { NULL, NULL }
};
/*
** Get file or symbolic link information
*/
static int _file_info_ (lua_State *L, int (*st)(const char*, STAT_STRUCT*)) {
        STAT_STRUCT info;
        const char *file = luaL_checkstring (L, 1);
        int i;
        if (st(file, &info)) {
                lua_pushnil(L);
                lua_pushfstring(L, "cannot obtain information from file '%s': %s", file, strerror(errno));
                return 2;
        }
        if (lua_isstring (L, 2)) {
                const char *member = lua_tostring (L, 2);
                for (i = 0; members[i].name; i++) {
                        if (strcmp(members[i].name, member) == 0) {
                                /* push member value and return */
                                members[i].push (L, &info);
                                return 1;
                        }
                }
                /* member not found */
                return luaL_error(L, "invalid attribute name '%s'", member);
        }
        /* creates a table if none is given, removes extra arguments */
        lua_settop(L, 2);
        if (!lua_istable (L, 2)) {
                lua_newtable (L);
        }
        /* stores all members in table on top of the stack */
        for (i = 0; members[i].name; i++) {
                lua_pushstring (L, members[i].name);
                members[i].push (L, &info);
                lua_rawset (L, -3);
        }
        return 1;
}
/*
** Get file information using stat.
*/
static int file_info (lua_State *L) {
        return _file_info_ (L, STAT_FUNC);
}
/*
** Push the symlink target to the top of the stack.
** Assumes the file name is at position 1 of the stack.
** Returns 1 if successful (with the target on top of the stack),
** 0 on failure (with stack unchanged, and errno set).
*/
static int push_link_target(lua_State *L) {
#ifdef _WIN32
        errno = ENOSYS;
        return 0;
#else
        const char *file = luaL_checkstring(L, 1);
        char *target = NULL;
        int tsize, size = 256; /* size = initial buffer capacity */
        while (1) {
            target = realloc(target, size);
            if (!target) /* failed to allocate */
                return 0;
            tsize = readlink(file, target, size);
            if (tsize < 0) { /* a readlink() error occurred */
                free(target);
                return 0;
            }
            if (tsize < size)
                break;
            /* possibly truncated readlink() result, double size and retry */
            size *= 2;
        }
        target[tsize] = '\0';
        lua_pushlstring(L, target, tsize);
        free(target);
        return 1;
#endif
}
/*
** Get symbolic link information using lstat.
*/
static int link_info (lua_State *L) {
        int ret;
        if (lua_isstring (L, 2) && (strcmp(lua_tostring(L, 2), "target") == 0)) {
                int ok = push_link_target(L);
                return ok ? 1 : pusherror(L, "could not obtain link target");
        }
        ret = _file_info_ (L, LSTAT_FUNC);
        if (ret == 1 && lua_type(L, -1) == LUA_TTABLE) {
                int ok = push_link_target(L);
                if (ok) {
                        lua_setfield(L, -2, "target");
                }
        }
        return ret;
}
/*
** Assumes the table is on top of the stack.
*/
static void set_info (lua_State *L) {
  lua_pushliteral(L, "Copyright (C) 2003-2016 Kepler Project");
  lua_setfield(L, -2, "_COPYRIGHT");
  lua_pushliteral(L, "LuaFileSystem is a Lua library developed to complement the set of functions related to file systems offered by the standard Lua distribution");
  lua_setfield(L, -2, "_DESCRIPTION");
  lua_pushliteral(L, "LuaFileSystem " LFS_VERSION);
  lua_setfield(L, -2, "_VERSION");
}
static const struct luaL_Reg fslib[] = {
        {"attributes", file_info},
        {"chdir", change_dir},
        {"currentdir", get_dir},
        {"dir", dir_iter_factory},
        {"link", make_link},
        {"lock", file_lock},
        {"mkdir", make_dir},
        {"rmdir", remove_dir},
        {"symlinkattributes", link_info},
        {"setmode", lfs_f_setmode},
        {"touch", file_utime},
        {"unlock", file_unlock},
        {"lock_dir", lfs_lock_dir},
        {NULL, NULL},
};
LFS_EXPORT int luaopen_lfs (lua_State *L) {
        dir_create_meta (L);
        lock_create_meta (L);
        luaL_newlib (L, fslib);
        lua_pushvalue(L, -1);
        lua_setglobal(L, LFS_LIBNAME);
        set_info (L);
        return 1;
}

LIBRARY lfs.dll
VERSION 1.6
EXPORTS
luaopen_lfs

/*
** LuaFileSystem
** Copyright Kepler Project 2003 - 2016 (http://keplerproject.github.io/luafilesystem)
*/
/* Define 'chdir' for systems that do not implement it */
#ifdef NO_CHDIR
  #define chdir(p)	(-1)
  #define chdir_error	"Function 'chdir' not provided by system"
#else
  #define chdir_error	strerror(errno)
#endif
#ifdef _WIN32
  #define chdir(p) (_chdir(p))
  #define getcwd(d, s) (_getcwd(d, s))
  #define rmdir(p) (_rmdir(p))
  #define LFS_EXPORT __declspec (dllexport)
  #ifndef fileno
    #define fileno(f) (_fileno(f))
  #endif
#else
  #define LFS_EXPORT
#endif
#ifdef __cplusplus
extern "C" {
#endif
LFS_EXPORT  int luaopen_lfs (lua_State *L);
#ifdef __cplusplus
}
#endif

language: c
sudo: false
env:
  - LUA="lua 5.1"
  - LUA="lua 5.2"
  - LUA="lua 5.3"
  - LUA="luajit 2.0"
before_install:
  - pip install --user cpp-coveralls hererocks
  - hererocks env --$LUA --luarocks latest
  - export PATH="$PWD/env/bin:$PATH"
  - luarocks install Lua-cURL --server=https://luarocks.org/dev
  - luarocks install lua-path 
  - luarocks install lua-cjson 
  - luarocks install luacov
  # install luacov-coveralls, but avoids installing luafilesystem
  - luarocks install luacov-coveralls --server=https://luarocks.org/dev --deps-mode=none
install:
  - luarocks make rockspecs/luafilesystem-cvs-3.rockspec CFLAGS="-O2 -fPIC -ftest-coverage -fprofile-arcs" LIBFLAG="-shared --coverage"
script:
  - lua -lluacov tests/test.lua
after_success:
  - coveralls -b . -i src --dump c.report.json
  - luacov-coveralls -j c.report.json -v
notifications:
  email:
    on_success: change
    on_failure: always

Copyright © 2003-2014 Kepler Project.
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use, copy,
modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

# $Id: Makefile,v 1.36 2009/09/21 17:02:44 mascarenhas Exp $
T= lfs
CONFIG= ./config
include $(CONFIG)
SRCS= src/$T.c
OBJS= src/$T.o
lib: src/lfs.so
src/lfs.so: $(OBJS)
	MACOSX_DEPLOYMENT_TARGET="10.3"; export MACOSX_DEPLOYMENT_TARGET; $(CC) $(CFLAGS) $(LIB_OPTION) -o src/lfs.so $(OBJS)
install:
	mkdir -p $(LUA_LIBDIR)
	cp src/lfs.so $(LUA_LIBDIR)
clean:
	rm -f src/lfs.so $(OBJS)

[![Licence](http://img.shields.io/badge/Licence-MIT-brightgreen.svg)](LICENCE.txt)
[![Build Status](https://travis-ci.org/keplerproject/luafilesystem.svg?branch=master)](https://travis-ci.org/keplerproject/luafilesystem)
[![Build status](https://ci.appveyor.com/api/projects/status/y04s4ms7u16trw8e?svg=true)](https://ci.appveyor.com/project/ignacio/luafilesystem)
[![Coverage Status](https://coveralls.io/repos/keplerproject/luafilesystem/badge.png)](https://coveralls.io/r/keplerproject/luafilesystem)
# LuaFileSystem - File System Library for Lua
Copyright 2003-2016 Kepler Project
http://keplerproject.github.io/luafilesystem
# Description
LuaFileSystem is a Lua library developed to complement the set of functions
related to file systems offered by the standard Lua distribution.
LuaFileSystem offers a portable way to access the underlying directory structure and file attributes.
LuaFileSystem is free software and uses the same license as Lua 5.1
# LuaRocks Installation
```
luarocks install luafilesystem
```
# Documentation
Please check the documentation at doc/us/ for more information.

# Installation directories
# Default installation prefix
PREFIX=/usr/local
# System's libraries directory (where binary libraries are installed)
LUA_LIBDIR= $(LUA_SRC_PATH)/lib/
# Lua includes directory
LUA_INC= $(LUA_INC_PATH)/
# OS dependent
LIB_OPTION= -shared #for Linux
#LIB_OPTION= -bundle -undefined dynamic_lookup #for MacOS X
LIBNAME= $T.so.$V
# Compilation directives
WARN= -O2 -Wall -fPIC -W -Waggregate-return -Wcast-align -Wmissing-prototypes -Wnested-externs -Wshadow -Wwrite-strings -pedantic
INCS= -I$(LUA_INC)
CFLAGS= $(WARN) $(INCS)
CC= gcc
# $Id: config,v 1.21 2007/10/27 22:42:32 carregal Exp $

*.o
*.so

/*
** LuaFileSystem
** Copyright Kepler Project 2003 - 2016 (http://keplerproject.github.io/luafilesystem)
**
** File system manipulation library.
** This library offers these functions:
**   lfs.attributes (filepath [, attributename | attributetable])
**   lfs.chdir (path)
**   lfs.currentdir ()
**   lfs.dir (path)
**   lfs.link (old, new[, symlink])
**   lfs.lock (fh, mode)
**   lfs.lock_dir (path)
**   lfs.mkdir (path)
**   lfs.rmdir (path)
**   lfs.setmode (filepath, mode)
**   lfs.symlinkattributes (filepath [, attributename])
**   lfs.touch (filepath [, atime [, mtime]])
**   lfs.unlock (fh)
*/
#ifndef LFS_DO_NOT_USE_LARGE_FILE
#ifndef _WIN32
#ifndef _AIX
#define _FILE_OFFSET_BITS 64 /* Linux, Solaris and HP-UX */
#else
#define _LARGE_FILES 1 /* AIX */
#endif
#endif
#endif
#ifndef LFS_DO_NOT_USE_LARGE_FILE
#define _LARGEFILE64_SOURCE
#endif
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <sys/stat.h>
#ifdef _WIN32
  #include <direct.h>
  #include <windows.h>
  #include <io.h>
  #include <sys/locking.h>
  #ifdef __BORLANDC__
    #include <utime.h>
  #else
    #include <sys/utime.h>
  #endif
  #include <fcntl.h>
  /* MAX_PATH seems to be 260. Seems kind of small. Is there a better one? */
  #define LFS_MAXPATHLEN MAX_PATH
#else
  #include <unistd.h>
  #include <dirent.h>
  #include <fcntl.h>
  #include <sys/types.h>
  #include <utime.h>
  #include <sys/param.h> /* for MAXPATHLEN */
  #define LFS_MAXPATHLEN MAXPATHLEN
#endif
#include <lua.h>
#include <lauxlib.h>
#include <lualib.h>
#include "lfs.h"
#define LFS_VERSION "1.6.3"
#define LFS_LIBNAME "lfs"
#if LUA_VERSION_NUM >= 503 /* Lua 5.3 */
#ifndef luaL_optlong
#define luaL_optlong luaL_optinteger
#endif
#endif
#if LUA_VERSION_NUM < 502
#  define luaL_newlib(L,l) (lua_newtable(L), luaL_register(L,NULL,l))
#endif
/* Define 'strerror' for systems that do not implement it */
#ifdef NO_STRERROR
#define strerror(_)     "System unable to describe the error"
#endif
#define DIR_METATABLE "directory metatable"
typedef struct dir_data {
        int  closed;
#ifdef _WIN32
        intptr_t hFile;
        char pattern[MAX_PATH+1];
#else
        DIR *dir;
#endif
} dir_data;
#define LOCK_METATABLE "lock metatable"
#ifdef _WIN32
 #ifdef __BORLANDC__
  #define lfs_setmode(file, m)   (setmode(_fileno(file), m))
  #define STAT_STRUCT struct stati64
 #else
  #define lfs_setmode(file, m)   (_setmode(_fileno(file), m))
  #define STAT_STRUCT struct _stati64
 #endif
#define STAT_FUNC _stati64
#define LSTAT_FUNC STAT_FUNC
#else
#define _O_TEXT               0
#define _O_BINARY             0
#define lfs_setmode(file, m)   ((void)file, (void)m, 0)
#define STAT_STRUCT struct stat
#define STAT_FUNC stat
#define LSTAT_FUNC lstat
#endif
/*
** Utility functions
*/
static int pusherror(lua_State *L, const char *info)
{
        lua_pushnil(L);
        if (info==NULL)
                lua_pushstring(L, strerror(errno));
        else
                lua_pushfstring(L, "%s: %s", info, strerror(errno));
        lua_pushinteger(L, errno);
        return 3;
}
static int pushresult(lua_State *L, int i, const char *info)
{
        if (i==-1)
                return pusherror(L, info);
        lua_pushinteger(L, i);
        return 1;
}
/*
** This function changes the working (current) directory
*/
static int change_dir (lua_State *L) {
        const char *path = luaL_checkstring(L, 1);
        if (chdir(path)) {
                lua_pushnil (L);
                lua_pushfstring (L,"Unable to change working directory to '%s'\n%s\n",
                                path, chdir_error);
                return 2;
        } else {
                lua_pushboolean (L, 1);
                return 1;
        }
}
/*
** This function returns the current directory
** If unable to get the current directory, it returns nil
**  and a string describing the error
*/
static int get_dir (lua_State *L) {
#ifdef NO_GETCWD
    lua_pushnil(L);
    lua_pushstring(L, "Function 'getcwd' not provided by system");
    return 2;
#else
    char *path = NULL;
    /* Passing (NULL, 0) is not guaranteed to work. Use a temp buffer and size instead. */
    size_t size = LFS_MAXPATHLEN; /* initial buffer size */
    int result;
    while (1) {
        path = realloc(path, size);
        if (!path) /* failed to allocate */
            return pusherror(L, "get_dir realloc() failed");
        if (getcwd(path, size) != NULL) {
            /* success, push the path to the Lua stack */
            lua_pushstring(L, path);
            result = 1;
            break;
        }
        if (errno != ERANGE) { /* unexpected error */
            result = pusherror(L, "get_dir getcwd() failed");
            break;
        }
        /* ERANGE = insufficient buffer capacity, double size and retry */
        size *= 2;
    }
    free(path);
    return result;
#endif
}
/*
** Check if the given element on the stack is a file and returns it.
*/
static FILE *check_file (lua_State *L, int idx, const char *funcname) {
#if LUA_VERSION_NUM == 501
        FILE **fh = (FILE **)luaL_checkudata (L, idx, "FILE*");
        if (*fh == NULL) {
                luaL_error (L, "%s: closed file", funcname);
                return 0;
        } else
                return *fh;
#elif LUA_VERSION_NUM >= 502 && LUA_VERSION_NUM <= 503
        luaL_Stream *fh = (luaL_Stream *)luaL_checkudata (L, idx, "FILE*");
        if (fh->closef == 0 || fh->f == NULL) {
                luaL_error (L, "%s: closed file", funcname);
                return 0;
        } else
                return fh->f;
#else
#error unsupported Lua version
#endif
}
/*
**
*/
static int _file_lock (lua_State *L, FILE *fh, const char *mode, const long start, long len, const char *funcname) {
        int code;
#ifdef _WIN32
        /* lkmode valid values are:
           LK_LOCK    Locks the specified bytes. If the bytes cannot be locked, the program immediately tries again after 1 second. If, after 10 attempts, the bytes cannot be locked, the constant returns an error.
           LK_NBLCK   Locks the specified bytes. If the bytes cannot be locked, the constant returns an error.
           LK_NBRLCK  Same as _LK_NBLCK.
           LK_RLCK    Same as _LK_LOCK.
           LK_UNLCK   Unlocks the specified bytes, which must have been previously locked.
           Regions should be locked only briefly and should be unlocked before closing a file or exiting the program.
           http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_crt__locking.asp
        */
        int lkmode;
        switch (*mode) {
                case 'r': lkmode = LK_NBLCK; break;
                case 'w': lkmode = LK_NBLCK; break;
                case 'u': lkmode = LK_UNLCK; break;
                default : return luaL_error (L, "%s: invalid mode", funcname);
        }
        if (!len) {
                fseek (fh, 0L, SEEK_END);
                len = ftell (fh);
        }
        fseek (fh, start, SEEK_SET);
#ifdef __BORLANDC__
        code = locking (fileno(fh), lkmode, len);
#else
        code = _locking (fileno(fh), lkmode, len);
#endif
#else
        struct flock f;
        switch (*mode) {
                case 'w': f.l_type = F_WRLCK; break;
                case 'r': f.l_type = F_RDLCK; break;
                case 'u': f.l_type = F_UNLCK; break;
                default : return luaL_error (L, "%s: invalid mode", funcname);
        }
        f.l_whence = SEEK_SET;
        f.l_start = (off_t)start;
        f.l_len = (off_t)len;
        code = fcntl (fileno(fh), F_SETLK, &f);
#endif
        return (code != -1);
}
#ifdef _WIN32
typedef struct lfs_Lock {
  HANDLE fd;
} lfs_Lock;
static int lfs_lock_dir(lua_State *L) {
  size_t pathl; HANDLE fd;
  lfs_Lock *lock;
  char *ln;
  const char *lockfile = "/lockfile.lfs";
  const char *path = luaL_checklstring(L, 1, &pathl);
  ln = (char*)malloc(pathl + strlen(lockfile) + 1);
  if(!ln) {
    lua_pushnil(L); lua_pushstring(L, strerror(errno)); return 2;
  }
  strcpy(ln, path); strcat(ln, lockfile);
  if((fd = CreateFile(ln, GENERIC_WRITE, 0, NULL, CREATE_NEW,
                FILE_ATTRIBUTE_NORMAL | FILE_FLAG_DELETE_ON_CLOSE, NULL)) == INVALID_HANDLE_VALUE) {
        int en = GetLastError();
        free(ln); lua_pushnil(L);
        if(en == ERROR_FILE_EXISTS || en == ERROR_SHARING_VIOLATION)
                lua_pushstring(L, "File exists");
        else
                lua_pushstring(L, strerror(en));
        return 2;
  }
  free(ln);
  lock = (lfs_Lock*)lua_newuserdata(L, sizeof(lfs_Lock));
  lock->fd = fd;
  luaL_getmetatable (L, LOCK_METATABLE);
  lua_setmetatable (L, -2);
  return 1;
}
static int lfs_unlock_dir(lua_State *L) {
  lfs_Lock *lock = (lfs_Lock *)luaL_checkudata(L, 1, LOCK_METATABLE);
  if(lock->fd != INVALID_HANDLE_VALUE) {    
    CloseHandle(lock->fd);
    lock->fd=INVALID_HANDLE_VALUE;
  }
  return 0;
}
#else
typedef struct lfs_Lock {
  char *ln;
} lfs_Lock;
static int lfs_lock_dir(lua_State *L) {
  lfs_Lock *lock;
  size_t pathl;
  char *ln;
  const char *lockfile = "/lockfile.lfs";
  const char *path = luaL_checklstring(L, 1, &pathl);
  lock = (lfs_Lock*)lua_newuserdata(L, sizeof(lfs_Lock));
  ln = (char*)malloc(pathl + strlen(lockfile) + 1);
  if(!ln) {
    lua_pushnil(L); lua_pushstring(L, strerror(errno)); return 2;
  }
  strcpy(ln, path); strcat(ln, lockfile);
  if(symlink("lock", ln) == -1) {
    free(ln); lua_pushnil(L);
    lua_pushstring(L, strerror(errno)); return 2;
  }
  lock->ln = ln;
  luaL_getmetatable (L, LOCK_METATABLE);
  lua_setmetatable (L, -2);
  return 1;
}
static int lfs_unlock_dir(lua_State *L) {
  lfs_Lock *lock = (lfs_Lock *)luaL_checkudata(L, 1, LOCK_METATABLE);
  if(lock->ln) {
    unlink(lock->ln);
    free(lock->ln);
    lock->ln = NULL;
  }
  return 0;
}
#endif
static int lfs_g_setmode (lua_State *L, FILE *f, int arg) {
  static const int mode[] = {_O_BINARY, _O_TEXT};
  static const char *const modenames[] = {"binary", "text", NULL};
  int op = luaL_checkoption(L, arg, NULL, modenames);
  int res = lfs_setmode(f, mode[op]);
  if (res != -1) {
    int i;
    lua_pushboolean(L, 1);
    for (i = 0; modenames[i] != NULL; i++) {
      if (mode[i] == res) {
        lua_pushstring(L, modenames[i]);
        return 2;
      }
    }
    lua_pushnil(L);
    return 2;
  } else {
    return pusherror(L, NULL);
  }
}
static int lfs_f_setmode(lua_State *L) {
  return lfs_g_setmode(L, check_file(L, 1, "setmode"), 2);
}
/*
** Locks a file.
** @param #1 File handle.
** @param #2 String with lock mode ('w'rite, 'r'ead).
** @param #3 Number with start position (optional).
** @param #4 Number with length (optional).
*/
static int file_lock (lua_State *L) {
        FILE *fh = check_file (L, 1, "lock");
        const char *mode = luaL_checkstring (L, 2);
        const long start = (long) luaL_optinteger (L, 3, 0);
        long len = (long) luaL_optinteger (L, 4, 0);
        if (_file_lock (L, fh, mode, start, len, "lock")) {
                lua_pushboolean (L, 1);
                return 1;
        } else {
                lua_pushnil (L);
                lua_pushfstring (L, "%s", strerror(errno));
                return 2;
        }
}
/*
** Unlocks a file.
** @param #1 File handle.
** @param #2 Number with start position (optional).
** @param #3 Number with length (optional).
*/
static int file_unlock (lua_State *L) {
        FILE *fh = check_file (L, 1, "unlock");
        const long start = (long) luaL_optinteger (L, 2, 0);
        long len = (long) luaL_optinteger (L, 3, 0);
        if (_file_lock (L, fh, "u", start, len, "unlock")) {
                lua_pushboolean (L, 1);
                return 1;
        } else {
                lua_pushnil (L);
                lua_pushfstring (L, "%s", strerror(errno));
                return 2;
        }
}
/*
** Creates a link.
** @param #1 Object to link to.
** @param #2 Name of link.
** @param #3 True if link is symbolic (optional).
*/
static int make_link(lua_State *L)
{
#ifndef _WIN32
        const char *oldpath = luaL_checkstring(L, 1);
        const char *newpath = luaL_checkstring(L, 2);
        return pushresult(L,
                (lua_toboolean(L,3) ? symlink : link)(oldpath, newpath), NULL);
#else
        errno = ENOSYS; /* = "Function not implemented" */
        return pushresult(L, -1, "make_link is not supported on Windows");
#endif
}
/*
** Creates a directory.
** @param #1 Directory path.
*/
static int make_dir (lua_State *L) {
        const char *path = luaL_checkstring (L, 1);
        int fail;
#ifdef _WIN32
        fail = _mkdir (path);
#else
        fail =  mkdir (path, S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP |
                             S_IWGRP | S_IXGRP | S_IROTH | S_IXOTH );
#endif
        if (fail) {
                lua_pushnil (L);
        lua_pushfstring (L, "%s", strerror(errno));
                return 2;
        }
        lua_pushboolean (L, 1);
        return 1;
}
/*
** Removes a directory.
** @param #1 Directory path.
*/
static int remove_dir (lua_State *L) {
        const char *path = luaL_checkstring (L, 1);
        int fail;
        fail = rmdir (path);
        if (fail) {
                lua_pushnil (L);
                lua_pushfstring (L, "%s", strerror(errno));
                return 2;
        }
        lua_pushboolean (L, 1);
        return 1;
}
/*
** Directory iterator
*/
static int dir_iter (lua_State *L) {
#ifdef _WIN32
        struct _finddata_t c_file;
#else
        struct dirent *entry;
#endif
        dir_data *d = (dir_data *)luaL_checkudata (L, 1, DIR_METATABLE);
        luaL_argcheck (L, d->closed == 0, 1, "closed directory");
#ifdef _WIN32
        if (d->hFile == 0L) { /* first entry */
                if ((d->hFile = _findfirst (d->pattern, &c_file)) == -1L) {
                        lua_pushnil (L);
                        lua_pushstring (L, strerror (errno));
                        d->closed = 1;
                        return 2;
                } else {
                        lua_pushstring (L, c_file.name);
                        return 1;
                }
        } else { /* next entry */
                if (_findnext (d->hFile, &c_file) == -1L) {
                        /* no more entries => close directory */
                        _findclose (d->hFile);
                        d->closed = 1;
                        return 0;
                } else {
                        lua_pushstring (L, c_file.name);
                        return 1;
                }
        }
#else
        if ((entry = readdir (d->dir)) != NULL) {
                lua_pushstring (L, entry->d_name);
                return 1;
        } else {
                /* no more entries => close directory */
                closedir (d->dir);
                d->closed = 1;
                return 0;
        }
#endif
}
/*
** Closes directory iterators
*/
static int dir_close (lua_State *L) {
        dir_data *d = (dir_data *)lua_touserdata (L, 1);
#ifdef _WIN32
        if (!d->closed && d->hFile) {
                _findclose (d->hFile);
        }
#else
        if (!d->closed && d->dir) {
                closedir (d->dir);
        }
#endif
        d->closed = 1;
        return 0;
}
/*
** Factory of directory iterators
*/
static int dir_iter_factory (lua_State *L) {
        const char *path = luaL_checkstring (L, 1);
        dir_data *d;
        lua_pushcfunction (L, dir_iter);
        d = (dir_data *) lua_newuserdata (L, sizeof(dir_data));
        luaL_getmetatable (L, DIR_METATABLE);
        lua_setmetatable (L, -2);
        d->closed = 0;
#ifdef _WIN32
        d->hFile = 0L;
        if (strlen(path) > MAX_PATH-2)
          luaL_error (L, "path too long: %s", path);
        else
          sprintf (d->pattern, "%s/*", path);
#else
        d->dir = opendir (path);
        if (d->dir == NULL)
          luaL_error (L, "cannot open %s: %s", path, strerror (errno));
#endif
        return 2;
}
/*
** Creates directory metatable.
*/
static int dir_create_meta (lua_State *L) {
        luaL_newmetatable (L, DIR_METATABLE);
        /* Method table */
        lua_newtable(L);
        lua_pushcfunction (L, dir_iter);
        lua_setfield(L, -2, "next");
        lua_pushcfunction (L, dir_close);
        lua_setfield(L, -2, "close");
        /* Metamethods */
        lua_setfield(L, -2, "__index");
        lua_pushcfunction (L, dir_close);
        lua_setfield (L, -2, "__gc");
        return 1;
}
/*
** Creates lock metatable.
*/
static int lock_create_meta (lua_State *L) {
        luaL_newmetatable (L, LOCK_METATABLE);
        /* Method table */
        lua_newtable(L);
        lua_pushcfunction(L, lfs_unlock_dir);
        lua_setfield(L, -2, "free");
        /* Metamethods */
        lua_setfield(L, -2, "__index");
        lua_pushcfunction(L, lfs_unlock_dir);
        lua_setfield(L, -2, "__gc");
        return 1;
}
#ifdef _WIN32
 #ifndef S_ISDIR
   #define S_ISDIR(mode)  (mode&_S_IFDIR)
 #endif
 #ifndef S_ISREG
   #define S_ISREG(mode)  (mode&_S_IFREG)
 #endif
 #ifndef S_ISLNK
   #define S_ISLNK(mode)  (0)
 #endif
 #ifndef S_ISSOCK
   #define S_ISSOCK(mode)  (0)
 #endif
 #ifndef S_ISFIFO
   #define S_ISFIFO(mode)  (0)
 #endif
 #ifndef S_ISCHR
   #define S_ISCHR(mode)  (mode&_S_IFCHR)
 #endif
 #ifndef S_ISBLK
   #define S_ISBLK(mode)  (0)
 #endif
#endif
/*
** Convert the inode protection mode to a string.
*/
#ifdef _WIN32
static const char *mode2string (unsigned short mode) {
#else
static const char *mode2string (mode_t mode) {
#endif
  if ( S_ISREG(mode) )
    return "file";
  else if ( S_ISDIR(mode) )
    return "directory";
  else if ( S_ISLNK(mode) )
        return "link";
  else if ( S_ISSOCK(mode) )
    return "socket";
  else if ( S_ISFIFO(mode) )
        return "named pipe";
  else if ( S_ISCHR(mode) )
        return "char device";
  else if ( S_ISBLK(mode) )
        return "block device";
  else
        return "other";
}
/*
** Set access time and modification values for file
*/
static int file_utime (lua_State *L) {
        const char *file = luaL_checkstring (L, 1);
        struct utimbuf utb, *buf;
        if (lua_gettop (L) == 1) /* set to current date/time */
                buf = NULL;
        else {
                utb.actime = (time_t)luaL_optnumber (L, 2, 0);
                utb.modtime = (time_t) luaL_optinteger (L, 3, utb.actime);
                buf = &utb;
        }
        if (utime (file, buf)) {
                lua_pushnil (L);
                lua_pushfstring (L, "%s", strerror (errno));
                return 2;
        }
        lua_pushboolean (L, 1);
        return 1;
}
/* inode protection mode */
static void push_st_mode (lua_State *L, STAT_STRUCT *info) {
        lua_pushstring (L, mode2string (info->st_mode));
}
/* device inode resides on */
static void push_st_dev (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer) info->st_dev);
}
/* inode's number */
static void push_st_ino (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer) info->st_ino);
}
/* number of hard links to the file */
static void push_st_nlink (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer)info->st_nlink);
}
/* user-id of owner */
static void push_st_uid (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer)info->st_uid);
}
/* group-id of owner */
static void push_st_gid (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer)info->st_gid);
}
/* device type, for special file inode */
static void push_st_rdev (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer) info->st_rdev);
}
/* time of last access */
static void push_st_atime (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer) info->st_atime);
}
/* time of last data modification */
static void push_st_mtime (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer) info->st_mtime);
}
/* time of last file status change */
static void push_st_ctime (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer) info->st_ctime);
}
/* file size, in bytes */
static void push_st_size (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer)info->st_size);
}
#ifndef _WIN32
/* blocks allocated for file */
static void push_st_blocks (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer)info->st_blocks);
}
/* optimal file system I/O blocksize */
static void push_st_blksize (lua_State *L, STAT_STRUCT *info) {
        lua_pushinteger (L, (lua_Integer)info->st_blksize);
}
#endif
 /*
** Convert the inode protection mode to a permission list.
*/
#ifdef _WIN32
static const char *perm2string (unsigned short mode) {
  static char perms[10] = "---------";
  int i;
  for (i=0;i<9;i++) perms[i]='-';
  if (mode  & _S_IREAD)
   { perms[0] = 'r'; perms[3] = 'r'; perms[6] = 'r'; }
  if (mode  & _S_IWRITE)
   { perms[1] = 'w'; perms[4] = 'w'; perms[7] = 'w'; }
  if (mode  & _S_IEXEC)
   { perms[2] = 'x'; perms[5] = 'x'; perms[8] = 'x'; }
  return perms;
}
#else
static const char *perm2string (mode_t mode) {
  static char perms[10] = "---------";
  int i;
  for (i=0;i<9;i++) perms[i]='-';
  if (mode & S_IRUSR) perms[0] = 'r';
  if (mode & S_IWUSR) perms[1] = 'w';
  if (mode & S_IXUSR) perms[2] = 'x';
  if (mode & S_IRGRP) perms[3] = 'r';
  if (mode & S_IWGRP) perms[4] = 'w';
  if (mode & S_IXGRP) perms[5] = 'x';
  if (mode & S_IROTH) perms[6] = 'r';
  if (mode & S_IWOTH) perms[7] = 'w';
  if (mode & S_IXOTH) perms[8] = 'x';
  return perms;
}
#endif
/* permssions string */
static void push_st_perm (lua_State *L, STAT_STRUCT *info) {
    lua_pushstring (L, perm2string (info->st_mode));
}
typedef void (*_push_function) (lua_State *L, STAT_STRUCT *info);
struct _stat_members {
        const char *name;
        _push_function push;
};
struct _stat_members members[] = {
        { "mode",         push_st_mode },
        { "dev",          push_st_dev },
        { "ino",          push_st_ino },
        { "nlink",        push_st_nlink },
        { "uid",          push_st_uid },
        { "gid",          push_st_gid },
        { "rdev",         push_st_rdev },
        { "access",       push_st_atime },
        { "modification", push_st_mtime },
        { "change",       push_st_ctime },
        { "size",         push_st_size },
        { "permissions",  push_st_perm },
#ifndef _WIN32
        { "blocks",       push_st_blocks },
        { "blksize",      push_st_blksize },
#endif
        { NULL, NULL }
};
/*
** Get file or symbolic link information
*/
static int _file_info_ (lua_State *L, int (*st)(const char*, STAT_STRUCT*)) {
        STAT_STRUCT info;
        const char *file = luaL_checkstring (L, 1);
        int i;
        if (st(file, &info)) {
                lua_pushnil(L);
                lua_pushfstring(L, "cannot obtain information from file '%s': %s", file, strerror(errno));
                return 2;
        }
        if (lua_isstring (L, 2)) {
                const char *member = lua_tostring (L, 2);
                for (i = 0; members[i].name; i++) {
                        if (strcmp(members[i].name, member) == 0) {
                                /* push member value and return */
                                members[i].push (L, &info);
                                return 1;
                        }
                }
                /* member not found */
                return luaL_error(L, "invalid attribute name '%s'", member);
        }
        /* creates a table if none is given, removes extra arguments */
        lua_settop(L, 2);
        if (!lua_istable (L, 2)) {
                lua_newtable (L);
        }
        /* stores all members in table on top of the stack */
        for (i = 0; members[i].name; i++) {
                lua_pushstring (L, members[i].name);
                members[i].push (L, &info);
                lua_rawset (L, -3);
        }
        return 1;
}
/*
** Get file information using stat.
*/
static int file_info (lua_State *L) {
        return _file_info_ (L, STAT_FUNC);
}
/*
** Push the symlink target to the top of the stack.
** Assumes the file name is at position 1 of the stack.
** Returns 1 if successful (with the target on top of the stack),
** 0 on failure (with stack unchanged, and errno set).
*/
static int push_link_target(lua_State *L) {
#ifdef _WIN32
        errno = ENOSYS;
        return 0;
#else
        const char *file = luaL_checkstring(L, 1);
        char *target = NULL;
        int tsize, size = 256; /* size = initial buffer capacity */
        while (1) {
            target = realloc(target, size);
            if (!target) /* failed to allocate */
                return 0;
            tsize = readlink(file, target, size);
            if (tsize < 0) { /* a readlink() error occurred */
                free(target);
                return 0;
            }
            if (tsize < size)
                break;
            /* possibly truncated readlink() result, double size and retry */
            size *= 2;
        }
        target[tsize] = '\0';
        lua_pushlstring(L, target, tsize);
        free(target);
        return 1;
#endif
}
/*
** Get symbolic link information using lstat.
*/
static int link_info (lua_State *L) {
        int ret;
        if (lua_isstring (L, 2) && (strcmp(lua_tostring(L, 2), "target") == 0)) {
                int ok = push_link_target(L);
                return ok ? 1 : pusherror(L, "could not obtain link target");
        }
        ret = _file_info_ (L, LSTAT_FUNC);
        if (ret == 1 && lua_type(L, -1) == LUA_TTABLE) {
                int ok = push_link_target(L);
                if (ok) {
                        lua_setfield(L, -2, "target");
                }
        }
        return ret;
}
/*
** Assumes the table is on top of the stack.
*/
static void set_info (lua_State *L) {
  lua_pushliteral(L, "Copyright (C) 2003-2016 Kepler Project");
  lua_setfield(L, -2, "_COPYRIGHT");
  lua_pushliteral(L, "LuaFileSystem is a Lua library developed to complement the set of functions related to file systems offered by the standard Lua distribution");
  lua_setfield(L, -2, "_DESCRIPTION");
  lua_pushliteral(L, "LuaFileSystem " LFS_VERSION);
  lua_setfield(L, -2, "_VERSION");
}
static const struct luaL_Reg fslib[] = {
        {"attributes", file_info},
        {"chdir", change_dir},
        {"currentdir", get_dir},
        {"dir", dir_iter_factory},
        {"link", make_link},
        {"lock", file_lock},
        {"mkdir", make_dir},
        {"rmdir", remove_dir},
        {"symlinkattributes", link_info},
        {"setmode", lfs_f_setmode},
        {"touch", file_utime},
        {"unlock", file_unlock},
        {"lock_dir", lfs_lock_dir},
        {NULL, NULL},
};
LFS_EXPORT int luaopen_lfs (lua_State *L) {
        dir_create_meta (L);
        lock_create_meta (L);
        luaL_newlib (L, fslib);
        lua_pushvalue(L, -1);
        lua_setglobal(L, LFS_LIBNAME);
        set_info (L);
        return 1;
}

LIBRARY lfs.dll
VERSION 1.6
EXPORTS
luaopen_lfs

/*
** LuaFileSystem
** Copyright Kepler Project 2003 - 2016 (http://keplerproject.github.io/luafilesystem)
*/
/* Define 'chdir' for systems that do not implement it */
#ifdef NO_CHDIR
  #define chdir(p)	(-1)
  #define chdir_error	"Function 'chdir' not provided by system"
#else
  #define chdir_error	strerror(errno)
#endif
#ifdef _WIN32
  #define chdir(p) (_chdir(p))
  #define getcwd(d, s) (_getcwd(d, s))
  #define rmdir(p) (_rmdir(p))
  #define LFS_EXPORT __declspec (dllexport)
  #ifndef fileno
    #define fileno(f) (_fileno(f))
  #endif
#else
  #define LFS_EXPORT
#endif
#ifdef __cplusplus
extern "C" {
#endif
LFS_EXPORT  int luaopen_lfs (lua_State *L);
#ifdef __cplusplus
}
#endif

sndgk393 AT ybb DOT ne DOT jp (K.Kosako)

Oniguruma LICENSE
-----------------
/*-
 * Copyright (c) 2002-2007  K.Kosako  <sndgk393 AT ybb DOT ne DOT jp>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

History
2010/01/09: Version 5.9.2
2010/01/05: [bug]  fix utf16be_code_to_mbc() and utf16le_code_to_mbc().
2008/09/16: [bug]  fix memory leaks in parse_exp().
2008/08/01: [bug]  fix memory leaks.
2008/06/17: [bug]  invalid type of argument was used
                   in onig_st_lookup_strend().
2008/06/16: [bug]  invalid CaseFoldMap entry in ISO-8859-5. 0xdf -> 0xde
2008/02/19: [new]  add: onig_reg_init().
2008/02/19: [new]  add: onig_free_body().
2008/02/19: [new]  add: onig_new_without_alloc().
2008/02/19: [API]  rename onig_alloc_init() to onig_reg_init(),
                   and argument type changed.
2008/01/31: [impl] move UTF16_IS_SURROGATE_XXX() to regenc.h.
2008/01/30: [bug]  (thanks akr)
                   fix euctw_islead().
2008/01/23: [bug]  update enc/koi8.c.
2007/12/22: Version 5.9.1
2007/12/21: [impl] add sprint_byte().
2007/11/28: [bug]  (thanks Andy Armstrong)
                   don't overwrite error code in fetch_name().
2007/11/12: [bug]  utf8 mbc length of code 0xfe, 0xff are not 1,
2007/10/23: [spec] onig_enc_len() takes three arguments. (not used)
2007/10/15: [impl] (thanks Rui Hirokawa)
                   add check HAVE_STDARG_H.
2007/09/07: [API]  rename enc_len() to onig_enc_len() in oniguruma.h.
2007/09/04: [API]  remove ONIGENC_ERR_XXXXX.
2007/09/03: [API]  add error ONIGERR_INVALID_CODE_POINT_VALUE.
2007/09/03: [impl] change error message to "invaid code point value"
                   for ONIGERR_INVALID_WIDE_CHAR_VALUE.
2007/09/03: [bug]  xxx_code_to_mbclen() should return
                   ONIGERR_INVALID_WIDE_CHAR_VALUE for invalid code point.
                   ex. /[\x{7fffffff}]/ for ASCII encoding.
2007/08/28: [impl] remove "warning: no previous declaration ...".
2007/08/21: [impl] remove warnings in enc/mktable.c.
2007/08/20: [impl] remove "warning: unused parameter"
2007/08/20: [impl] remove "warning: comparison between signed and unsigned".
2007/08/06: [impl] remove clear_not_flag_cclass().
2007/08/03: [bug]  fix the case of undefined USE_NAMED_GROUP.
2007/08/02: [spec] add backref by number.
2007/08/01: [API]  add OnigCtype.
2007/07/27: [spec] add USE_CASE_FOLD_IS_APPLIED_INSIDE_NEGATIVE_CCLASS.
2007/07/24: [impl] define PLATFORM_UNALIGNED_WORD_ACCESS.
2007/07/23: [dist] fix doc/FAQ.ja.
2007/07/14: Version 5.9.0
2007/07/13: [bug]  add check into onig_reduce_nested_quantifier().
2007/06/26: [spec] (thanks K.Takata)
                   ONIG_OPTION_SINGLELINE: '$' -> '\Z'  (as Perl)
2007/06/26: [dist] (thanks K.Takata)
                   fix documents API and API.ja.
2007/06/19: [impl] remove IS_NOT_NULL() check before onig_node_free().
2007/06/18: [bug]  (thanks KUBO Takehiro)
                   WORD_ALIGNMENT_SIZE must be sizeof(OnigCodePoint).
2007/06/18: [impl] rename CClassNode flags.
2007/06/18: [bug]  initialization miss.
2007/06/13: [impl] change node type reference NXXXX.
2007/06/11: [impl] add node type bit.
2007/06/11: [spec] allow anchor in enclosed repeater. /(\z)*/
2007/06/11: [impl] rename node types.
2007/06/08: [impl] remove OP_SET_OPTION_PUSH and OP_SET_OPTION from match_at().
2007/06/07: [impl] use xvsnprintf().
2007/06/06: [tune] don't set qn->next_head_exact for string first byte is zero.
2007/06/06: [impl] remove unused variables.
2007/06/04: Version 5.8.0
2007/06/04: [impl] add #ifndef vsnprintf into regint.h.
2007/05/31: [dist] add configure option '--enable-crnl-as-line-terminator'.
2007/05/30: [dist] add sample/crnl.c.
2007/05/30: [bug]  should check USE_CRNL_AS_LINE_TERMINATOR case
                   in onig_search().
2007/05/29: [impl] move USE_CRNL_AS_LINE_TERMINATOR into regenc.h.
2007/05/29: [impl] should check USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE
                   in forward_search_range() and backward_search_range().
2007/04/27: Version 5.7.0
2007/04/20: [spec] add config USE_MATCH_RANGE_IS_COMPLETE_RANGE.
2007/04/20: [impl] refactoring in match_at().
2007/04/12: Version 5.6.1
2007/04/12: [bug]  must not use UChar in oniguruma.h.
2007/04/09: [impl] change STATE_CHECK_BUFF_MAX_SIZE value from 0x8000
                   to 0x4000. [ruby-core:10883]
2007/04/04: Version 5.6.0  (mourning for Hideo Takamatsu)
2007/04/03: [spec] add new notation (?'name'), \k'name', \g'name'.
2007/04/03: [impl] remove unused variable.
2007/03/26: [impl] add 'void' to function declarations.
2007/03/06: Version 5.5.3
2007/03/06: [bug]  add #include <malloc.h> for bcc32.
                   (In bcc32, alloca() is declared in malloc.h.)
2007/03/02: [bug]  invalid optimization for semi-end-buf in onig_search().
                   ex. /\n\Z/.match("aaaaaaaaaa\n")
2007/03/02: [impl] move range > start check position in end_buf process.
2007/01/09: Version 5.5.2
2007/01/09: [impl] rename USE_EXTERNAL_LOWER_CASE_CONV_TABLE.
2007/01/05: [tune] select_opt_exact_info() didn't work for empty info.
                   ex. /.a/ make MAP info instead of EXACT info.
2006/12/28: [impl] add print_enc_string() for ONIG_DEBUG mode.
2006/12/22: Version 5.5.1
2006/12/22: [impl] rename ADD_PAD_TO_SHORT_BYTE_STRING
                 . to USE_PAD_TO_SHORT_BYTE_CHAR.
2006/12/21: [spec] should check too short multibyte char in parse_exp().
                   add ADD_PAD_TO_SHORT_BYTE_STRING.
                   ex. /\x00/ in UTF16 should be error.
2006/12/06: Version 5.5.0
2006/12/05: [bug]  should add unfold-1 codes from folded code into
                   onigenc_unicode_get_case_fold_codes_by_str().
                   (ex. "S" -> "s" -> 0x017f)
2006/12/05: [new]  add flag ONIGENC_CASE_FOLD_TURKISH_AZERI and
                   USE_UNICODE_CASE_FOLD_TURKISH_AZERI. (disabled in default)
2006/12/04: [spec] remove ONIGENC_CASE_FOLD_FULL.
2006/11/30: [impl] remove unnecessary check in xxx_mbc_case_fold().
2006/11/29: Version 5.4.0
2006/11/28: [spec] INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR is enabled in
                   default case fold status.
2006/11/28: [spec] rename ONIGENC_CASE_FOLD_MULTI_CHAR to
                   INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR.
2006/11/28: [impl] remove USE_UNICODE_CASE_FOLD_MULTI_CHAR.
2006/11/28: [impl] remove Fold[123]Table and add FoldTable.
2006/11/27: [impl] change tool/unicode_fc.rb to see CaseFolding.txt.
2006/11/24: [bug]  should call callback for to[j] <-> to[k] in
                   onigenc_unicode_apply_all_case_fold().
2006/11/22: Version 5.3.0
2006/11/22: [dist] add index_ja.html.
2006/11/22: [impl] undef ONIG_ESCAPE_UCHAR_COLLISION in regint.h and regenc.h.
2006/11/21: [bug]  invalid array access.
2006/11/21: [impl] escape UChar collision from config.h.
2006/11/20: [new]  add Hiragana/Katakana properties into Shift_JIS.
2006/11/20: [impl] fix CR_Katakana[] values in EUC-JP.
2006/11/17: [impl] declare strend hash table functions in regint.h.
2006/11/17: [impl] move property list functions to regenc.c.
2006/11/17: [new]  add Hiragana/Katakana properties into EUC-JP.
2006/11/15: [impl] remove NOT_RUBY from AM_CFLAGS.
2006/11/14: Version 5.2.0
2006/11/14: [impl] remove program codes for Ruby.
2006/11/14: [impl] reduce program codes for Ruby.
2006/11/10: [bug]  0x24, 0x2b, 0x3c, 0x3d, 0x3e, 0x5e, 0x60, 0x7c, 0x7e
                   should be [:punct:].
2006/11/09: [new]  (thanks Byte)
                   add new character encoding CP1251.
2006/11/08: [impl] rename QUALIFIER -> QUANTIFIER.
2006/11/07: Version 5.1.0
2006/11/07: [dist] remove test.rb, testconv.rb and testconvu.rb.
2006/11/07: [bug]  get_case_fold_codes_by_str() should handle 'Ss' and 'sS'
                   combination for ess-tsett.
2006/11/07: [impl] apply_all_case_fold() doesn't need to return all 
                   case character combination for multi-character folding.
                   (ONIGENC_CASE_FOLD_MULTI_CHAR)
2006/11/07: [bug]  (thanks Byte)
                   add { 0xa3, 0xb3 } to CaseFoldMap[] for KOI8-R.
2006/11/06: [spec] change ONIG_OPTION_FIND_LONGEST to search all of 
                   the string range.
                   add USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE.
2006/11/02: [impl] re-implement expand_case_fold_string() for
                   ONIGENC_CASE_FOLD_MULTI_CHAR.
2006/10/30: [impl] add NSTR_DONT_GET_OPTINFO flag.
2006/10/30: [impl] (thanks K.Takata)
                   add THREAD_SYSTEM_INIT and THREAD_SYSTEM_END.
2006/10/30: [bug]  (thanks Wolfgang Nadasi-Donner)
                   invalid offset value was used in STATE_CHECK_BUFF_INIT().
2006/10/27: [tune] speed up ONIGENC_MBC_CASE_FOLD() for UTF-16, UTF-32.
                   (ASCII code check)
2006/10/27: [tune] (thanks Kornelius Kalnbach)
                   String#scan for long string needs long time compare with
                   old Ruby
                   by initialization time for combination explosion check
                   ex. ("test " * 100_000).scan(/\w*\s?/)
                   change STATE_CHECK_BUFF_MAX_SIZE from 0x8000000 to 0x8000.
                   reduce initialization area of state_check_buff.
2006/10/25: [impl] add DISABLE_CASE_FOLD_MULTI_CHAR().
2006/10/23: Version 5.0.1
2006/10/23: [bug]  should fold string in expand_case_fold_string().
2006/10/23: [bug]  (thanks Km)
                   too many case fold/unfold expansion problem.
                   don't expand and set ambig flag to the string node.
                   (except ONIGENC_CASE_FOLD_MULTI_CHAR).
2006/10/23: [bug]  (thanks K.Takata)
                   invalid \p{Alnum}, \p{ASCII}, [:alnum:], [:ascii:].
                   fix OnigEncAsciiCtypeTable[] etc...
2006/10/23: [spec] (thanks K.Takata)
                   add [:word:] POSIX bracket.
2006/10/23: [bug]  (thanks K.Takata)
                   \p{Word} doesn't work.
2006/10/20: [impl] don't expand for AMBIG_FLAG string in
                   expand_case_fold_string().
2006/10/19: Version 5.0.0
2006/10/18: [bug]  ONIGENC_GET_CASE_FOLD_CODES_MAX_NUM should be 13.
2006/10/18: [impl] remove unused functions.
2006/10/18: [dist] update documents.
2006/10/18: [API]  move OnigMetaCharTableType to OnigSyntaxType.
2006/10/18: [dev]  add too/unicode_fc.rb, unicode_pc.rb.
2006/10/18: [dist] remove MANIFEST-RUBY from distribution.
2006/10/18: [bug]  return duplicated code in
                   onigenc_unicode_get_case_fold_codes_by_str().
2006/10/18  [API]  remove ONIG_SYN_OP2_CHAR_PROPERTY_PREFIX_IS.
2006/10/18: [dev]  add tool/19.
2006/10/18: [dist] remove target 19 from Makefile.am.
2006/10/17: [dist] add enc/unicode.c to target 19 of win32/Makefile.
2006/10/17: [impl] change type for escape VC++ warning.
2006/10/17: [API]  rename ONIGENC_CASE_FOLD_NONE to ONIGENC_CASE_FOLD_MIN.
2006/10/17: [dist] remove INSTALL-RUBY from distribution.
2006/10/17: [dist] update LTVERSION to "2:0:0".
2006/10/17: [impl] remove warnings for [make CFLAGS="-g -O2 -Wall"]
                   in the case USE_UNICODE_PROPERTIES and
                   USE_UNICODE_CASE_FOLD_MULTI_CHAR are undefined.
2006/10/17: [impl] remove warnings for [make CFLAGS="-g -O2 -Wall"].
2006/10/17: [impl] re-implement onigenc_unicode_apply_all_case_fold().
                   multi-char by case folded char-class is treated as
                   caseless-string (ambig flag on).
                   enable OP_EXACT1_IC and OP_EXACTN_IC.
2006/10/16: [bug]  unfold expand for 1->2, 1->3 folding in
                   onigenc_unicode_apply_all_case_fold().
                   add CaseFoldExpand_12[], CaseFoldExpand_13[].
2006/10/16: [bug]  (thanks Akinori Musha)
                   first argument of rb_warn() should be format string.
2006/10/16: [impl] add msa.state_check_buff_size initialization
                   in onig_search().
2006/10/16: [spec] re-implement Unicode Caseless Match codes.
2006/10/10: [bug]  should call onig_st_free_table() in
                   onig_free_shared_cclass_table().
2006/10/10: [impl] remove OnigCompCaseFoldCodes.
2006/10/10: [impl] remove onigenc_ascii_is_mbc_ambiguous() and
                   onigenc_mbn_is_mbc_ambiguous().
2006/10/10: [API]  remove is_mbc_ambiguous() member from OnigEncodingType.
2006/10/10: [API]  rename onig_set_default_ambig_flag() to
                   onig_set_default_case_fold_flag(),
                   onig_get_default_ambig_flag() to
                   onig_get_default_case_fold_flag(),
                   onig_get_ambig_flag() to onig_get_case_fold_flag().
2006/10/10: [API]  rename ambig_flag to case_fold_flag.
2006/10/10: [API]  rename OnigAmbigType to OnigCaseFoldType.
2006/10/10: [impl] rename ONIGENC_IS_CODE_SB_WORD() to IS_CODE_SB_WORD()
                   and move to regint.h.
2006/10/10: [impl] remove OP_WORD_SB and OP_WORD_MB.
2006/10/10: [impl] remove OP_EXACT1_IC and OP_EXACTN_IC from match_at().
2006/10/10: [impl] should free new_str in expand_case_fold_string().
2006/10/06: [dist] add test entrys to sample/encode.c.
2006/10/06: [impl] re-implement caseless match (case-fold).
2006/10/06: [impl] expand string node by case fold variations.
                   add expand_case_fold_string().
2006/10/05: [spec] rename OnigCompAmbigCodeItem to OnigCaseFoldCodeItem.
2006/10/05: [spec] add apply_all_case_fold() and get_case_fold_codes_by_str()
                   to OnigEncodingType.
2006/10/05: [spec] remove ambig_flag, get_all_pair_ambig_codes() and
                   get_all_comp_ambig_codes() member from OnigEncodingType.
2006/10/03: [impl] rename mbc_to_normalize() to mbc_case_fold().
2006/10/03: [spec] rename ONIGENC_AMBIGUOUS_MATCH_XXX
                   to ONIGENC_CASE_FOLD_XXX.
                   rename ONIGENC_CASE_FOLD_COMPOUND
                   to ONIGENC_CASE_FOLD_MULTI_CHAR.
2006/10/02: [impl] remove all ONIG_RUBY_M17N part.
2006/09/29: [impl] initialize state_check_buff_size in STATE_CHECK_BUFF_INIT().
                   make valgrind happy.
2006/09/22: [impl] remove parse time ctype values (CTYPE_WORD etc...)
2006/09/22: [ruby] enable USE_BACKREF_AT_LEVEL for Ruby mode.
2006/09/22: [spec] (thanks Allan Odgaard)
                   allow upper case letter as the first character
                   of group name.
                   fetch_name() and fetch_name_with_level()
2006/09/21: [impl] convert to ascii for parameter string in
                   onig_error_code_to_str().
                   add enc member into OnigErrorInfo.
2006/09/21: [dist] update documents for Unicode Property.
2006/09/21: [new]  add Unicode Properties. (enc/unicode.c)
                   Any, Assigned, C, Cc, L, Lm, Arabic, Greek etc...
2006/09/21: [impl] add USE_UNICODE_PROPERTIES into regenc.h.
2006/09/21: [impl] remove USE_UNICODE_FULL_RANGE_CTYPE.
2006/09/20: [impl] change ONIGENC_CTYPE_XXXX to sequencial values.
                   add BIT_CTYPE_XXXX bit flags to regenc.h.
                   update XXXX_CtypeTable[] for BIT_CTYPE_ALNUM.
2006/09/19: [memo] move from CVS to Subversion (1.3.2).
2006/09/19: [impl] (thanks KOYAMA Tetsuji)
                   HAVE_STDARG_PROTOTYPES was not defined in Mac OS X
                   by Xcode 2.4(gcc 4.0.1) problem. [php-dev 1312] etc...
2006/09/15: [bug]  (thanks Allan Odgaard)
                   out of range access in bm_search_notrev().
                   (p < s)
2006/09/13: [impl] add ONIGENC_CTYPE_ENC_EXT flag.
2006/09/13: [spec] remove 'Is' prefix check for property name
                   from fetch_char_property_to_ctype().
2006/09/13: [API]  add property_name_to_ctype member to OnigEncodingType.
2006/09/12: [spec][ruby] add ONIG_SYN_OP2_ESC_P_BRACE_CHAR_PROPERTY and
                   ONIG_SYN_OP2_ESC_P_BRACE_CIRCUMFLEX_NOT to OnigSyntaxRuby.
2006/09/08: Version 4.4.2
2006/09/08: [test] success in ruby 1.9.0 (2006-08-22) [i686-linux].
2006/09/08: [bug]  (thanks K.Takata)
                   out of range access in bm_search_notrev().
2006/09/04: [spec] (thanks K.Takata)
                   allow look-behind in negative look-behind.
                   ex. /(?<!(?<=a)b|c)d/
2006/08/29: Version 4.4.1
2006/08/29: [test] success in ruby 1.9.0 (2006-08-22) [i686-linux].
2006/08/29: [dist] (thanks Seiji Masugata)
                    add configure option --enable-combination-explosion-check
2006/08/25: Version 4.4.0
2006/08/25: [test] success in ruby 1.9.0 (2006-08-22) [i686-linux].
2006/08/25: [impl] add_state_check_num() should be enclosed in
                   ifdef USE_COMBINATION_EXPLOSION_CHECK.
2006/08/23: [spec] config USE_COMBINATION_EXPLOSION_CHECK is enabled
                   in Ruby mode only.
2006/08/22: [impl] remove last line comma in enum OpCode.
2006/08/22: [impl] remove OP_STATE_CHECK_ANYCHAR_STAR_PEEK_NEXT and
                   OP_STATE_CHECK_ANYCHAR_ML_STAR_PEEK_NEXT.
2006/08/22: [impl] remove OP_BACKREF3.
2006/08/21: Version 4.3.1
2006/08/21: [test] success in ruby 1.9.0 (2006-07-28) [i686-linux].
2006/08/21: [impl] change stack type values
                   and re-define STK_MASK_TO_VOID_TARGET etc...
2006/08/21: [impl] set repeat_range[].upper to 0x7fffffff as infinite.
2006/08/21: [impl] add STATE_CHECK_BUFF_MALLOC_THRESHOLD_SIZE.
2006/08/21: [impl] reduce (?:a*){n,m}, (?:a+){n,m} => (?:a*){n,n}, (?:a+){n,n}
2006/09/21: [impl] reduce (a*){n,m}, (a+){n,m} => (a*){n,n}, (a+){n,n}
                   if backreference is not used.
2006/08/17: [bug]  should check scan_env.num_call > 0 for backrefed pattern
                   in combination explosion check.
2006/08/17: Version 4.3.0
2006/08/17: [test] success in ruby 1.9.0 (2006-07-28) [i686-linux].
2006/08/17: [new]  add config USE_COMBINATION_EXPLOSION_CHECK.
                   check /(.+)*/, /(\s*foo\s*)*/ etc...
            [API]  add num_comb_exp_check member in regex_t.
            [dist] change LTVERSION value to "1:0:0" in configure.in.
2006/08/15: [bug]  OP_REPEAT_INC process in match_at().
                   should check repeat-count >= range-upper and
                   range-upper may be infinite.
2006/08/11: Version 4.2.3
2006/08/11: [test] success in ruby 1.9.0 (2006-07-28) [i686-linux].
2006/08/10: [impl] remove double call in set_qualifier().
2006/08/10: [impl] remove by_number member in QualifierNode.
2006/08/09: [impl] remove a comma at the end of enum ReduceType
                   for escape warning on Mac OS X.
2006/08/07: [impl] remove warning in regcomp.c.
2006/08/07: [spec] move definition of USE_BACKREF_AT_LEVEL into NOT_RUBY.
2006/08/03: Version 4.2.2
2006/08/03: [test] success in ruby 1.9.0 (2006-07-28) [i686-linux].
2006/08/03: [bug]  (thanks Hiroyuki Yamamoto)
                   segmentation fault in regexec(). (POSIX API)
2006/08/02: [bug]  combination of \G in look-ahead/look-behind and other
                   anchors(\A, \z, \Z) cause invalid result.
                   ex. /(?!\G)a\z/.match("ba")
                   start arg. of MATCH_ARG_INIT() should be original
                   arg. of onig_search().
2006/07/31: Version 4.2.1
2006/07/31: [test] success in ruby 1.9.0 (2006-07-28) [i686-linux].
2006/07/31: [bug] (thanks Kimura Minoru)
                   re-implement bm_search_notrev().
2006/07/31: [impl] bm_search_notrev() refactoring.
2006/07/31: [bug]  (thanks Kimura Minoru)
                   fix incomplete multibyte string in exact info.
2006/07/31: [impl] (thanks Seiji Masugata)
                   remove cast in va_init_list() for Intel C Compiler.
2006/07/18: Version 4.2.0
2006/07/18: [test] success in ruby 1.9.0 (2006-03-01) [i686-linux].
2006/07/18: [new]  (thanks Wolfgang Nadasi-Donner)
                   add back reference with nest level.
                   \k<name+n>, \k<name-n>
2006/07/11: [impl] change long to unsigned long for ONIG_OPTION_XXX
                   and ONIG_SYN_XXX number literals.
2006/07/03: Version 4.1.2
2006/07/03: [test] success in ruby 1.9.0 (2006-03-01) [i686-linux].
2006/07/03: [spec] (thanks Wolfgang Nadasi-Donner)
                   allow \G in look-behind.
                   add ANCHOR_BEGIN_POSITION flag in setup_tree().
2006/06/12: [impl] (thanks matz)
                    fix cast from char* to const char*
                    in onig_snprintf_with_pattern().
                    fix cast from char* to const char*
                    for PopularQStr[] and ReduceQStr[].
2006/05/22: Version 4.1.1
2006/05/22: [test] success in ruby 1.9.0 (2006-03-01) [i686-linux].
2006/05/22: [impl] add position string argument to STACK_BASE_CHECK().
2006/05/22: [bug]  (thanks NARUSE, Yui)
                   add STK_NULL_CHECK_END to IS_TO_VOID_TARGET().
                   ex. core dump in
                   /(?<pare>\(([^\(\)]++|\g<pare>)*+\))/.match('((a))')
2006/05/15: Version 4.1.0
2006/05/15: [test] success in ruby 1.9.0 (2006-03-01) [i686-linux].
2006/05/15: [impl] thread atomic changes for onig_end() and
                   onig_free_node_list().
2006/05/15: [test] success in ruby 1.9.0 (2006-03-01) [i686-linux].
2005/05/15: [dist] update API, API.ja, FAQ, FAQ.ja.
2006/05/15: [spec] remove onig_recompile(), onig_recompile_deluxe()
                   and re_recompile_pattern().
                   add config USE_RECOMPILE_API.
2006/05/15: [impl] improved thread safe implementation of onig_search()
                   and onig_match().
2006/05/11: Version 4.0.4
2006/05/11: [test] success in ruby 1.9.0 (2006-03-01) [i686-linux].
2006/05/11: [bug]  (thanks Yuji Kaneda)
                   dead-lock in onig_end().              
2006/05/11: [dist] update index.html.
2006/05/08: Version 4.0.3
2006/05/08: [test] success in ruby 1.9.0 (2006-03-01) [i686-linux].
2006/05/08: [bug]  (thanks Allan Odgaard)
                   Segmentation fault in backward search.
                   ex. /^\t.*$/
2006/04/18: [dist] update index.html.
2006/04/05: [dist] update index.html.
2006/03/24: [dist] update doc/RE, doc/RE.ja.
2006/03/23: Version 4.0.2
2006/03/22: [test] success in ruby 1.9.0 (2006-03-01) [i686-linux].
2006/03/22: [impl] add both of ONIG_OPTION_DONT_CAPTURE_GROUP
                   and ONIG_OPTION_CAPTURE_GROUP check.
2006/03/22: [spec] add error code ONIGERR_INVALID_COMBINATION_OF_OPTIONS.
2006/03/22: [impl] remove USE_NAMED_GROUP condition from
                   ONIG_OPTION_DONT_CAPTURE_GROUP check in parse_effect().
2006/03/22: [new]  add API onig_noname_group_capture_is_active().
2006/03/01: [spec] rename regex object type from regex_t to OnigRegexType.
                   add typedef OnigRegexType regex_t
                   unless ONIG_ESCAPE_REGEX_T_COLLISION is defined.
2006/02/27: [spec] change ONIG_MAX_MULTI_BYTE_RANGES_NUM from 1000
                   to 10000.  (for docdiff program)
2006/02/17: [dist] change COPYING year 2005 -> 2006.
2006/02/07: Version 4.0.1
2006/02/07: [test] success in ruby 1.9.0 (2005-11-28) [i686-linux].
2006/02/07: [bug]  memory leaks in onig_free_shared_cclass_table().
2006/02/03: [ruby] add -m 0644 option to install command in "make 19".
2006/02/03: [impl] rename ANCHOR_ANYCHAR_STAR_PL to ANCHOR_ANYCHAR_STAR_ML.
                   change from IS_POSIXLINE() to IS_MULTILINE()
                   for ANCHOR_ANYCHAR_START/_ML decision
                   in optimize_node_left().
2006/01/26: [dist] update index.html for Oniguruma 2.5.3.
2006/01/25: [dist] update URL in index.html.
2006/01/24: Version 4.0.0
2006/01/24: [test] success in ruby 1.9.0 (2005-11-28) [i386-cygwin].
2006/01/24: [test] success in ruby 1.9.0 (2005-11-28) [i686-linux].
2006/01/24: [dist] remove warnings from sample/encode.c.
2006/01/24: [dist] change install description in README(.ja).
2006/01/24: [dist] remove re.c.XXX.patch from distribution and CVS.
2006/01/24: [dist] --- support shared library ---
                   use GNU libtool/automake.
                   change configure.in and add Makefile.am, sample/Makefile.am.
                   add AUTHORS file.
2006/01/24: [dist] test programs return exit code -1 when test fails. 
2006/01/24: [bug] (thanks KIMURA Koichi)
                   invalid syntax definition in ONIG_SYNTAX_GREP.
                   ONIG_SYN_OP_BRACE_INTERVAL
                   -> ONIG_SYN_OP_ESC_BRACE_INTERVAL
2006/01/23: [dist] fix configure.in for onig-config.
2006/01/19: [new]  add new config USE_UNICODE_ALL_LINE_TERMINATORS.
                   (U+000d, U+0085, U+2028, U+2029)
2005/12/29: [dist] change pmatch array size to 25 in testconv.rb.
2005/12/26: [dist] fix name in test.rb.
2005/12/26: [dist] update index.html for 2.5.1.
2005/11/29: Version 3.9.1
2005/11/29: [test] success in ruby 1.9.0 (2005-11-28) [i686-linux].
2005/11/24: [test] success in ruby 1.9.0 (2005-08-09) [i686-linux].
2005/11/21: [test] success in ruby 1.9.0 (2005-11-20) [i386-cygwin].
2005/11/21: [bug]  (thanks Allan Odgaard)
                   utf-8 character comments in extended mode leads 
                   invalid result.
                   ex. /(?x)(?<= # <any-utf-8 multibyte char>o\n~) /
                   fix onigenc_unicode_is_code_ctype() and
                   utf8_is_code_ctype().
2005/11/20: [bug]  (thanks MATSUMOTO Satoshi) (thanks Isao Sonobe)
                   begin-line anchor and BM search optimization leads
                   invalid result in UTF-16/32.
                   fix in set_optimize_exact_info().
2005/11/20: Version 3.9.0
2005/11/20: [test] success in ruby 1.9.0 (2005-11-20) [i386-cygwin].
2005/11/20: [test] success in ruby 1.9.0 (2005-10-18) [i386-cygwin].
2005/11/20: [new]  add new config USE_CRNL_AS_LINE_TERMINATOR.
                   (!!! NO SUPPORT experimental option !!!)
2005/11/15: [bug]  (thanks Allan Odgaard)
                   tok->escape was not cleared in fetch_token_in_cc().
                   ex. [\s&&[^\n]] makes wrong result.
2005/10/18: [impl] (thanks nobu)
                   change sjis_mbc_enc_len()
                   and node_new_cclass_by_codepoint_range() scope to static.
2005/09/05: [dist] remove link to MultiFind.
2005/09/01: [dist] add link to yagrep.
2005/08/23: Version 3.8.9
2005/08/23: [test] success in ruby 1.9.0 (2005-08-09) [i686-linux].
2005/08/23: [inst] fix Makefile.in for make ctest/ptest.
2005/08/23: Version 3.8.8
2005/08/23: [test] success in ruby 1.9.0 (2005-08-09) [i686-linux].
2005/08/23: [impl] split is_code_in_cc() from onig_is_code_in_cc().
2005/08/23: [impl] should check DATA_ENSURE() at OP_CCLASS_NODE in match_at().
2005/08/23: [impl] (thanks akr)
                   add ONIG_OPTION_MAXBIT for escape conflict with
                   Ruby's option.
2005/08/22: [impl] escape GCC 4.0 warnings for testc.c.
2005/08/22: [bug]  (thanks nobu, matz) [ruby-dev:26840]
                   UTF-8 0xFE, 0xFF handling bug in code_is_in_cclass_node().
                   abort on /\S*/ =~ "\xfe"
2005/08/22: [impl] escape GCC 4.0 warnings for sample/*.c.
2005/08/22: [impl] fix testconvu.rb.
2005/08/22: [impl] escape GCC 4.0 warnings.
2005/08/09: Version 3.8.7
2005/08/09: [test] success in ruby 1.9.0 (2005-08-09) [i686-linux].
2005/08/09: [bug]  (thanks Allan Odgaard)
                   should not call enc_len() for s == range
                   in onig_search().
2005/08/01: [dist] add mkdir $prefix, mkdir $exec_prefix to make install.
2005/07/27: Version 3.8.6
2005/07/27: [test] success in ruby 1.9.0 (2005-07-26) [i686-linux].
2005/07/27: [impl] update onig-config.in.
2005/07/26: [new]  (thanks Yen-Ju Chen)
                   add Oniguruma configuration check program.
                   (onig-config.in)
2005/07/14: Version 3.8.5
2005/07/14: [test] success in ruby 1.9.0 (2005-07-14) [i686-linux].
2005/07/11: [test] success in ruby 1.9.0 (2005-07-04) [i686-linux].
2005/07/11: [bug]  (thanks nobu) [ruby-dev:26505]
                   invalid handling for /\c\x/ and /\C-\x/.
                   fix fetch_escaped_value().
2005/07/05: [impl] (thanks Alexey Zakhlestine)
                   escape GCC 4.0 warnings.
2005/07/01: Version 3.8.4
2005/07/01: [test] success in ruby 1.9.0 (2005-07-01) [i686-linux].
2005/06/30: [test] success in ruby 1.9.0 (2005-06-28) [i686-linux].
2005/06/30: [dist] add GB 18030 test to sample/encode.c.
2005/06/30: [impl] escape warning of gb18030_left_adjust_char_head().
2005/06/30: [new]  (contributed by KUBO Takehiro)
                   add new character encoding ONIG_ENCODING_GB18030.
2005/06/30: [bug]  invalid ctype check for multibyte encodings.
                   ("graph", "print")
                   fix onigenc_mb2/4_is_code_ctype(), 
                   eucjp_is_code_ctype() and sjis_is_code_ctype().
2005/06/30: [bug]  invalid conversion from code point to mbc in
                   onigenc_mb4_code_to_mbc().
2005/06/28: Version 3.8.3
2005/06/28: [test] success in ruby 1.9.0 (2005-06-28) [i686-linux].
2005/06/27: [test] success in ruby 1.9.0 (2005-05-31) [i686-linux].
2005/06/27: [bug]  (thanks Wolfgang Nadasi-Donner)
                   invalid check for never ending recursion.
                   lower zero quantifier should be treated as
                   a non-recursive call alternative.
                   ex. /(?<bal>[^()]*(\(\g<bal>\)[^()]*)*)/
2005/06/15: [impl] add divide_ambig_string_node_sub().
2005/06/15: [dist] add a test to sample/encode.c.
2005/06/10: [new]  add ONIG_SYNTAX_PERL_NG. (Perl + named group)
2005/06/01: Version 3.8.2
2005/06/01: [test] success in ruby 1.9.0 (2005-05-31) [i686-linux].
2005/05/31: [dist] add doc/FAQ and doc/FAQ.ja.
2005/05/31: [impl] minor change in node_new().
2005/05/30: [test] success in ruby 1.9.0 (2005-05-11) [i686-linux].
2005/05/30: [bug]  (thanks Allan Odgaard)
                   FreeNodeList null check should be on thread-atomic
                   in node_new().
2005/05/11: Version 3.8.1
2005/05/11: [test] success in ruby 1.9.0 (2005-05-11) [i386-mswin32].
2005/05/11: [dist] update win32/Makefile (make 19).
2005/05/11: [test] success in ruby 1.9.0 (2005-05-11) [i686-linux].
2005/05/06: [test] success in ruby 1.9.0 (2005-05-06) [i686-linux].
2005/05/06: [impl] (thanks nobu) [ruby-core:4815]
                   add #ifdef USE_VARIABLE_META_CHARS to goto label.
2005/04/25: [test] success in ruby 1.9.0 (2005-04-25) [i686-linux].
2005/04/25: [impl] change DEFAULT_WARN_FUNCTION and DEFAULT_VERB_WARN_FUNCTION
                   to onig_rb_warn() and onig_rb_warning().
2005/04/15: Version 3.8.0
2005/04/15: [test] success in ruby 1.9.0 (2005-04-14) [i686-linux].
2005/04/01: [test] success in ruby 1.9.0 (2005-03-24) [i686-linux].
2005/04/01: [impl] (thanks Joe Orton)
                   (thanks Moriyoshi Koizumi)
                   many const-ification to many *.[ch] files.
2005/03/25: Version 3.7.2
2005/03/25: [test] success in ruby 1.9.0 (2005-03-24) [i686-linux].
2005/03/23: [test] success in ruby 1.9.0 (2005-03-20) [i686-linux].
2005/03/23: [test] success in ruby 1.9.0 (2005-03-08) [i686-linux].
2005/03/23: [new]  add ONIG_SYNTAX_ASIS.
2005/03/23: [new]  add ONIG_SYN_OP2_INEFFECTIVE_ESCAPE.
2005/03/09: [spec] rename MBCTYPE_XXX to RE_MBCTYPE_XXX. (GNU API)
2005/03/08: [test] success in ruby 1.9.0 (2005-03-08) [i686-linux].
2005/03/08: [impl] (thanks matz) [ruby-dev:25783]
                   should not allocate memory for key data in st.c.
                   move st_*_strend() functions from st.c. fixed some
	           potential memory leaks.
                   (imported from Ruby 1.9 2005-03-08)
2005/03/07: Version 3.7.1
2005/03/07: [test] success in ruby 1.9.0 (2005-03-07) [i686-linux].
2005/03/07: [impl] (thanks Rui Hirokawa)
                   add ONIG_ESCAPE_UCHAR_COLLISION.
                   rename UChar to OnigUChar in oniguruma.h.
2005/03/07: [impl] remove declarations for Ruby in oniggnu.h.
2005/03/05: [bug]  ANCHOR_ANYCHAR_STAR didn't work in onig_search().
2005/03/01: [dist] remove oniggnu.h from MANIFEST-RUBY.
                   remove oniggnu.h from make 19.
2005/03/01: [bug]  (thanks matz) [ruby-dev:25778]
                   uninitialized member (OptEnv.backrefed_status)
                   was used. 
2005/02/19: Version 3.7.0
2005/02/19: [test] success in ruby 1.9.0 (2005-02-19) [i386-cygwin].
2005/02/19: [new]  (thanks Minero Aoki)
                   add onig_region_set().
2005/02/19: [API]  change onig_region_init() to extern.
2005/02/19: [dist] remove reggnu.c from MANIFEST-RUBY.
                   remove reggnu.c from make 19.
2005/02/19: [dist] update doc/API and doc/API.ja.
2005/02/19: [test] success in ruby 1.9.0 (2005-02-19) [i386-cygwin].
2005/02/19: [impl] (thanks Alexey Zakhlestine)
                   change UChar* to const UChar* in oniguruma.h,
                   regenc.h and regparse.h.
2005/02/13: [impl] change UChar* to const UChar* in oniguruma.h and
                   onigposix.h and st.h.
2005/02/12: [test] success in ruby 1.9.0 (2005-02-11) [i386-cygwin].
2005/02/12: [bug]  (thanks nobu) [ruby-dev:25676]
                   type_cclass_hash() fix overrun.
2005/02/09: [test] success in ruby 1.9.0 (2005-02-09) [i686-linux].
2005/02/09: [spec] add RE_OPTION_FIND_NOT_EMPTY etc.. to oniggnu.h.
2005/02/09: [dist] remove hash.c.patch.
2005/02/07: [impl] remove re_mbctab, mbctab_ascii etc...
                   (USE_COMPATIBILITY_FOR_RUBY_EXTENSION_LIBRARY)
2005/02/04: Version 3.6.0
2005/02/04: [test] success in ruby 1.9.0 (2005-02-04) [i686-linux].
2005/02/01: [bug]  add key_free() call to st_free_table().
2005/02/01: [new]  add onig_get_default_ambig_flag() and
                   onig_set_default_ambig_flag().
2005/02/01: [dist] update MANIFEST-RUBY.
2005/01/31: [test] success in ruby 1.9.0 (2005-01-29) [i686-linux].
2005/01/31: [spec] remove ONIGENC_AMBIGUOUS_MATCH_COMPOUND
                   from ONIGENC_AMBIGUOUS_MATCH_DEFAULT.
2005/01/31: [dist] update Makefile.in (make 19).
2005/01/29: [memo] (thanks Kazuo Saito)
                   Oniguruma 3.5.4 was merged to Ruby 1.9.0.
2005/01/28: [impl] (thanks UK-taniyama)
                   add extern "C" { } directive to oniguruma.h, oniggnu.h
                   and onigposix.h for C++.
2005/01/25: [impl] remove nested function call for xxx_code_to_mbclen().
                   (euc_kr.c, euc_tw.c, big5.c)
2005/01/19: Version 3.5.4
2005/01/19: [test] success in ruby 1.9.0 (2005-01-05) [i686-linux].
2005/01/19: [bug]  (thanks Isao Sonobe)
                   callback function argument name_end of onig_foreach_name()
                   was wrong.
                   name key of name table should be null terminated for 
                   character encoding length.
                   add strdup_with_null(), rename onig_strdup() to k_strdup().
                   use e->name_len in i_names().
2005/01/17: [impl] (thanks UK-taniyama)
                   add HAVE_SYS_TYPES_H to config.h.in.
2005/01/13: Version 3.5.3
2005/01/13: [test] success in ruby 1.9.0 (2005-01-05) [i686-linux].
2005/01/13: [bug]  ignore case match bug.
                   ex. /s+/iu.match("SSSSS") ==> [4..5]
                   fix OP_EXACT1_IC, OP_EXACTN_IC process.
2005/01/13: [bug]  (thanks Isao Sonobe)
                   ignore case match bug.
                   ex. /is/iu.match("ss") fail.
                   fix str_lower_case_match() etc.
2005/01/05: Version 3.5.2
2005/01/05: [test] success in ruby 1.9.0 (2005-01-05) [i686-linux].
2005/01/05: [test] success in ruby 1.9.0 (2004-12-16) [i686-linux].
2005/01/05: [bug]  (thanks Isao Sonobe)
                   ignore case match bug.
                   ex. /s+/iu.match("sssss") ==> [4..5]
                   fix OP_EXACT1_IC, OP_EXACTN_IC process.
2005/01/05: [bug]  (thanks Isao Sonobe)
                   group name table should be renumbered.
                   add onig_renumber_name_table().
2004/12/24: [dist] remove file onigcmpt200.h.
2004/12/17: Version 3.5.1
2004/12/17: [dist] add INSTALL-RUBY to archive.
2004/12/16: [test] success in ruby 1.9.0 (2004-12-16) [i686-linux].
2004/12/16: [dist] update hash.c.patch.
2004/12/15: [bug]  (thanks matz)
                   char > 127 should be casted to unsigned char. (utf8.c)
2004/12/13: [impl] add HAVE_PROTOTYPES and HAVE_STDARG_PROTOTYPES definition
                   to oniguruma.h in the case __cplusplus.
2004/12/06: [dist] update doc/RE and doc/RE.ja.
2004/12/03: [impl] (thanks nobu)
                   st.h fix prototype for C++.
2004/12/03: Version 3.5.0
2004/12/02: [test] success in ruby 1.9.0 (2004-12-02) [i686-linux].
2004/12/01: [test] success in ruby 1.9.0 (2004-12-01) [i386-mswin32].
2004/12/01: [dist] add make targets 19 and 19up to win32/Makefile.
2004/12/01: [test] success in ruby 1.9.0 (2004-12-01) [i386-cygwin].
2004/12/01: [test] success in ruby 1.9.0 (2004-12-01) [i686-linux].
2004/12/01: [impl] double cast for escape warning in Cygwin.
                  (HashDataType* )((void* )(&e)) in regparse.c
2004/12/01: [test] success in ruby 1.9.0 (2004-11-30) [i686-linux].
2004/12/01: [tune] change implementation of clear_opt_map_info().
                   (which was 10-16% cost in gprof result for my test program)
2004/12/01: [dist] remove regex.c from distribution files.
2004/11/30: [memo] remove targets 16 and 18 from Makefile.in.
2004/11/30: [test] success in ruby 1.9.0 (2004-11-30) [i686-linux].
2004/11/30: [inst] add "cp -p st.[ch] st.[ch].ruby_orig" to "make 19".
2004/11/30: [tune] map_position_value() return 20 if code is 0
                   and minimum enclen > 1.
2004/11/30: [test] success in ruby 1.9.0 (2004-11-29) [i686-linux].
2004/11/30: [impl] minor changes for multi-thread in regexec.c and regcomp.c.
2004/11/30: [impl] change THREAD_PASS_LIMIT_COUNT value from 10 to 8.
2004/11/30: [impl] add THREAD_ATOMIC_XXX to FreeNodeList access in regparse.c
2004/11/29: [impl] add USE_MULTI_THREAD_SYSTEM.
2004/11/29: [memo] add hash.c.patch to CVS.
2004/11/29: [dist] change mail address to 'sndgk393 AT ...'
2004/11/29: [dist] add -s option (silent mode) to test.rb.
2004/11/29: [tune] change THRESHOLD_RANGE_NUM_FOR_SHARE_CCLASS value
                   from 20 to 8.
2004/11/29: [inst] add make target "19up".
2004/11/29: [dist] change Oniguruma Home Page URL.
2004/11/29: [impl] remove onig_is_in_code_range_array().
2004/11/29: [dist] fix doc/RE and RE.ja (character types).
2004/11/26: [dist] fix win32/Makefile.
2004/11/26: [dist] fix doc/RE and RE.ja (multibyte character types).
2004/11/26: [impl] add onig_free_shared_cclass_table().
2004/11/26: [impl] move definition USE_UNICODE_FULL_RANGE_CTYPE to regenc.h.
2004/11/26: [impl] add opcode OP_CCLASS_NODE.
2004/11/26: [impl] move definition of CClassNode to regint.h.
2004/11/26: [impl] add type PointerType in regint.h.
2004/11/25: [impl] remove ONIGENC_CTYPE_MOD_NOT.
2004/11/25: [impl] rename onig_node_new_cclass_by_codepoint_range to
                   node_new_cclass_by_codepoint_range.
2004/11/25: [impl] remove get_type_cc_node method from OnigEncodingType.
2004/11/25: [impl] move implementation of shared char-class from enc/*.c
                   to regparse.c.
2004/11/25: [dist] add hash.c.patch for Ruby 1.9 hash.c change.
2004/11/22: [impl] change utf8_get_type_node().
2004/11/22: [impl] add ONIGENC_CTYPE_MOD_NOT.
2004/11/22: [bug]  (thanks MIYAMUKO Katsuyuki)
                   ruby make test fail in HP-UX B.11.23 ia64.
                   should use tok->u.code instead of tok->u.c in
                   the case of TK_CODE_POINT.
2004/11/19: [bug]  (thanks Yoshida Masato)
                   invalid multibyte code causes segmentation fault.
                   ex.  /[\xFF-\xFF]/u
2004/11/19: [bug]  (thanks Yoshida Masato)
                   illegal check in char-class range in UTF-8.
                   ex.  s = "[\xC2\xA0-\xC3\xBE]"
                        p(Regexp.new(s, nil, "u") =~ "\xC3\xBE")
2004/11/18: [impl] add onig_node_new_cclass_by_codepoint_range().
2004/11/18: [impl] remove OnigCodePointRange type. (use OnigCodePoint[].)
2004/11/17: [bug]  (thanks nobu)
                   abort in "a".gsub(/a\Z/, "")
                   fix ONIGENC_STEP_BACK() argument in onig_search().
2004/11/16: [impl] add key2 member to st_table_entry in st.[ch].
                   change API of st for non-null terminated string key.
2004/11/16: [impl] add get_type_cc_node method to OnigEncodingType.
2004/11/15: [impl] add st.h and st.c from Ruby 1.9.
                   use st-hash always.
2004/11/12: [impl] change menber 'not' of CClassNode to 'flags'.
                   add flags FLAG_CCLASS_NOT and FLAG_CCLASS_SHARE.
2004/11/12: [impl] add onig_is_in_code_range_array() to enc/unicode.c.
2004/11/12: [impl] fix CRWord in enc/unicode.c and MBWord in enc/utf8.c.
2004/11/11: [bug]  fix enc/utf8.c.
                   size 0 array initializer was compile error in VC++.
2004/11/09: [inst] (thanks Hiroki YAGITA)
                   change installed file mode to 0644.
2004/11/09: [bug]  (thanks UK-taniyama)
                   wrong definitions GET_RELADDR_INC(), GET_ABSADDR_INC()
                   etc... (NOT PLATFORM_UNALIGNED_WORD_ACCESS)
2004/11/09: [impl] type cast in regexec() for remove compile time warning.
                   (WIN32, regposix.c)
2004/11/08: [spec] fix Unicode character types.
                   0x00ad (soft hyphen) should be [:cntrl:] and [:space:] type.
                   [0x0009..0x000d], 0x0085 should be [:print:] type.
                   0x00ad should not be [:punct:] type.
2004/11/08: [inst] fix Makefile.in. (for make ctest/ptest/testcu)
2004/11/06: [impl] (thanks Kazuo Saito)
                   too many alternatives pattern causes core dump.
                   change implementation of onig_node_free().
2004/11/05: [spec] rename ONIGERR_END_PATTERN_AT_BACKSLASH to
                   ONIGERR_END_PATTERN_AT_ESCAPE.
2004/11/05: [impl] (thanks matz)
                   escape compile time warnings for x86-64 Linux.
                   StackIndex type int -> long
2004/11/05: [memo] (thanks Kazuo Saito)
                   Oniguruma 3.4.0 was merged to Ruby 1.9.0.
2004/10/30: Version 3.4.0
2004/10/30: [test] success in ruby 1.9.0 (2004-09-24) [i686-linux].
2004/10/30: [new]  add hexadecimal digit char type. (\h, \H)
                   syntax: ONIG_SYN_OP2_ESC_H_XDIGIT
2004/10/30: [bug]  (thanks Guy Decoux)
                   reluctant infinite repeat bug.
                   ex. /^[a-z]{2,}?$/.match("aaa") fail.
                   fix OP_REPEAT_INC_NG process in match_at().
2004/10/18: Version 3.3.1
2004/10/18: [test] success in ruby 1.9.0 (2004-09-24) [i686-linux].
2004/10/18: [impl] (thanks Imai Yasumasa)
                   enclose #include <sys/types.h> by #ifndef __BORLANDC__.
2004/10/18: [bug]  (thanks Imai Yasumasa)
                   memory acess violation in select_opt_exact_info().
2004/09/25: [dist] fix doc/API and doc/API.ja.
2004/09/25: [bug]  fix OP_SEMI_END_BUF process in match_at() for
                   the case USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE
                   is not defined.
2004/09/17: Version 3.3.0
2004/09/17: [dist] add COPYING to program source files.
2004/09/17: [test] success in ruby 1.9.0 (2004-07-23) [i686-linux].
2004/09/17: [bug]  (thanks Isao Sonobe)
                   memory access violations in xxx_mbc_enc_len(),
                   and xxx_mbc_to_normalize() and
                   xxx_left_adjust_char_head().
                   add string range check in match_at() and onig_search().
2004/09/08: [dist] change mail address format.(kosako AT sofnec ...)
2004/09/04: Version 3.2.9
2004/09/04: [test] success in ruby 1.9.0 (2004-07-23) [i686-linux].
2004/09/04: [bug]  (thanks Bob Kerstetter and Richard Koch)
                   search fail in ignore case mode.
                   fix str_lower_case_match().
2004/09/04: [inst] (thanks Isao Sonobe)
                   clear sample directory in 'make clean'.
2004/09/04: [bug]  fix ONIGENC_AMBIGUOUS_MATCH_COMPOUND/ASCII/NONASCII
                   meanings in XXXXX_mbc_to_normalize() and
                   XXXXX_is_mbc_ambiguous().
2004/08/28: [bug]  fix ONIGENC_AMBIGUOUS_MATCH_COMPOUND/ASCII/NONASCII
                   meanings in iso_8859_XX_mbc_to_normalize() and
                   iso_8859_XX_is_mbc_ambiguous().
2004/08/24: Version 3.2.8
2004/08/24: [test] success in ruby 1.9.0 (2004-07-23) [i686-linux].
2004/08/24: [spec] add ONIG_SYN_FIXED_INTERVAL_IS_GREEDY_ONLY.
                   /a{n}?/ == /(?:a{n})?/
2004/08/24: [dist] fix doc/RE and doc/RE.ja.
2004/08/24: [bug]  (thanks starfish)
                   memory leak in set_optimize_exact_info().
2004/08/21: Version 3.2.7
2004/08/21: [test] success in ruby 1.8.2 (2004-07-28) [i686-linux].
                   (1.8.2 preview2)
2004/08/21: [test] success in ruby 1.9.0 (2004-07-23) [i686-linux].
2004/08/21: [bug]  (thanks Isao Sonobe) (thanks kage)
                   memory access violation in bm_search_notrev().
                   (forgotten to merge from 2.X)
2004/07/24: Version 3.2.6
2004/07/24: [test] success in ruby 1.9.0 (2004-07-23) [i686-linux].
2004/07/24: [test] success in ruby 1.8.2 (2004-07-16) [i686-linux].
2004/07/24: [bug]  fix warnings for regexec.c. (gcc 2.91.66)
2004/07/24: [memo] change version control system from Subversion
                   to CVS 1.11.17.
2004/07/20: [bug]  (thanks Isao Sonobe)
                   illegal result in negative character class in ignore case
                   mode. fix pair-ambig-codes process in parse_exp().
                   ex. /[^a]/i.match("A")
2004/07/20: [bug]  (thanks Isao Sonobe)
                   undefined bytecode error happens in UTF-16BE etc..
                   compile_length_cclass_node() was not consistent with
                   compile_cclass_node().
2004/07/01: Version 3.2.5
2004/07/01: [test] success in ruby 1.8.2 (2004-06-23) [i686-linux].
2004/07/01: [new]  add onig_get_syntax_{op,op2,behavior,options}.
2004/07/01: [bug]  (thanks Isao Sonobe)
                   invalid result in onig_capture_tree_traverse().
                   fix make_capture_history_tree().
2004/06/29: Version 3.2.4
2004/06/29: [test] success in ruby 1.8.2 (2004-06-23) [i686-linux].
2004/06/29: [new]  (thanks Isao Sonobe)
                   add onig_number_of_captures().
2004/06/25: Version 3.2.3
2004/06/25: [test] success in ruby 1.8.2 (2004-06-23) [i686-linux].
2004/06/25: [bug]  (thanks Isao Sonobe)
                   invalid result in onig_capture_tree_traverse().
                   fix make_capture_history_tree().
2004/06/24: Version 3.2.2
2004/06/24: [test] success in ruby 1.8.0 (2003-08-08) [i386-cygwin].
2004/06/24: [test] success in ruby 1.8.0 (2003-08-08) [i386-mswin32].
2004/06/24: [test] success in ruby 1.8.2 (2004-06-23) [i686-linux].
2004/06/24: [new]  (thanks Isao Sonobe)
                   add onig_number_of_capture_histories().
2004/06/24: [bug]  (thanks Isao Sonobe)
                   invalid char position match in UTF-16 and UTF-32.
                   add onigenc_always_false_is_allowed_reverse_match().
2004/06/17: Version 3.2.1
2004/06/17: [test] success in ruby 1.8.0 (2003-08-08) [i386-cygwin].
2004/06/17: [test] success in ruby 1.8.0 (2003-08-08) [i386-mswin32].
2004/06/17: [test] success in ruby 1.8.2 (2004-05-18) [i686-linux].
2004/06/17: [impl] should not use OP_REPEAT for (...)? even if target size
                   is long.
2004/06/17: [bug]  (thanks nobu) [ruby-dev:23703]
                   should use STACK_AT() instead of stkp in OP_REPEAT_INC.
                   add IN_VAR_REPEAT flag in setup_tree().
2004/06/16: [impl] change select_opt_exact_info() to use ByteValTable[].
2004/06/16: [impl] change map_position_value() table values.
2004/06/14: [impl] (thanks John Carter)
                   RelAddrType, AbsAddrType and LengthType change
                   from short int to int type for the very long string match.
2004/06/14: [bug]  (thanks Greg A. Woods)
                   fix nmatch argument of regexec() is smaller than 
                   reg->num_mem + 1 case. (POSIX API)
2004/06/14: [spec] (thanks Greg A. Woods)
                   set pmatch to NULL if nmatch is 0 in regexec(). (POSIX API)
2004/06/10: Version 3.2.0
2004/06/10: [test] success in ruby 1.8.0 (2003-08-08) [i386-cygwin].
2004/06/10: [test] success in ruby 1.9.0 (2004-05-27) [i386-mswin32].
2004/06/10: [test] success in ruby 1.8.2 (2004-05-18) [i686-linux].
2004/06/10: [dist] add README.ja.
2004/06/10: [new]  add onig_copy_encoding().
2004/06/10: [API]  add encoding argument to onig_set_meta_char().
                   add meta_char_table member to OnigEncodingType.
2004/06/08: [dist] add doc/API.ja.
2004/06/07: [API]  add num_of_elements member to OnigCompileInfo.
2004/05/29: [memo] (thanks Kazuo Saito)
                   Oniguruma 3.1.0 was merged to Ruby 1.9.0.
2004/05/26: [impl] rename NST_SIMPLE_REPEAT to NST_STOP_BT_SIMPLE_REPEAT.
2004/05/26: [impl] doesn't need to check that target's simple repeat-ness
                   for EFFECT_MEMORY type node in setup_tree().
2004/05/25: Version 3.1.0
2004/05/25: [test] success in ruby 1.8.0 (2003-08-08) [i386-mswin32].
2004/05/25: [test] success in ruby 1.8.0 (2003-08-08) [i386-cygwin].
2004/05/25: [test] success in ruby 1.9.0 (2004-05-23) [i686-linux].
2004/05/25: [test] success in ruby 1.8.2 (2004-05-18) [i686-linux].
2004/05/25: [bug]  (thanks Masahiro Sakai) [ruby-dev:23560]
                   ruby -ruri -ve 'URI::ABS_URI =~
                                    "http://example.org/Andr\xC3\xA9"'
                   nested STK_REPEAT type stack can't backtrack repeat_stk[].
                   add OP_REPEAT_INC_SG and OP_REPEAT_INC_NG_SG.
2004/05/25: [new]  support UTF-32LE. (ONIG_ENCODING_UTF32_LE)
2004/05/25: [new]  support UTF-32BE. (ONIG_ENCODING_UTF32_BE)
2004/05/24: [impl] divide enc/utf16.c to utf16_be.c and utf16_le.c.
2004/05/24: [impl] add enc/unicode.c.
2004/05/24: [API]  change calling sequences of onig_new_deluxe() and
                   onig_recompile_deluxe().
                   define OnigCompileInfo type.
2004/05/21: [impl] perform ensure process for rb_trap_exec() in match_at().
                   add onig_exec_trap() and CHECK_INTERRUPT_IN_MATCH_AT.
2004/05/21: [impl] add regex status check to onig_match().
2004/05/21: [new]  add onig_get_capture_tree() and
                   onig_capture_tree_traverse().
2004/05/20: [spec] (thanks Isao Sonobe)
                   capture history return capture data tree.
                   (see sample/listcap.c)
2004/05/19: [bug]  (thanks Simon Strandgaard)
                   Control-C does not work in matching process on Ruby.
                   add calling of CHECK_INTERRUPT into match_at().
                   ex. /<(?:[^">]+|"[^"]*")+>/.match('<META http-equiv= \
                       "Content-Type content="text/html; charset=iso-8859-1">')
2004/05/19: [bug]  (thanks Simon Strandgaard)
                   define virtual codepoint values for invalid encoding
                   byte 0xfe and 0xff in UTF-8.
                   ex. /\w+/u.match("%a\xffb\xfec%") ==> "a"
2004/05/19: [spec] (thanks Simon Strandgaard)
                   too big backref number should be treated as a sequence of
                   an octal char and number digits.
                   ex. /b\3777\c/.match("b\3777\c")
2004/05/17: [spec] rename encoding names "UTF-16 BE" and "UTF-16 LE"
                   to "UTF-16BE" and "UTF-16LE".
2004/05/17: [impl] move ismbchar() and mbclen() from oniguruma.h to oniggnu.h.
2004/05/17: [impl] rename onigenc_single_byte_is_allowed_reverse_match() to
                   onigenc_always_true_is_allowed_reverse_match().
2004/05/14: Version 3.0.0
2004/05/14: [test] success in ruby 1.8.0 (2003-08-08) [i386-cygwin].
2004/05/14: [test] success in ruby 1.9.0 (2004-05-14) [i686-linux].
2004/05/14: [test] success in ruby 1.8.0 (2003-08-08) [i386-mswin32].
                   (* need to edit parse.y:
                       register int c; ---> int c; in yylex())
2004/05/14: [impl] add regext.c.
2004/05/14: [spec] KOI8 is not included in library archive by default setup.
2004/05/14: [impl] implementation changes are completed for all encoding files.
2004/05/12: [impl] add divide_ambig_string_node().
                   ambiguous string is divided and normalized before
                   optimization and compilation process.
2004/05/11: [dist] remove INSTALL-RUBY from distribution.
2004/04/28: [memo] (thanks Kazuo Saito)
                   Oniguruma 2.2.8 was merged to Ruby 1.9.0.
2004/04/26: [spec] change value DEFAULT_MATCH_STACK_LIMIT_SIZE = 0 : unlimited
2004/04/26: [new]  add onig_get_match_stack_limit_size() and
                   onig_set_match_stack_limit_size().
2004/04/26: [bug]  add error check to re.c.181.patch and re.c.168.patch.
2004/04/23: [impl] remove ctype_support_level from OnigEncodingType.
2004/04/22: [spec] allow the range from single byte char to multibyte char in
                   character class for implementation reason.
                   ex. /[a-\xbb\xcc]/ in EUC-JP encoding.
2004/04/21: [impl] remove max_enc_len_by_first_byte() from OnigEncodingType.
2004/04/20: [new]  add onig_copyright().
2004/04/20: [impl] add regversion.c.
2004/04/15: [new]  add onig_get_ambig_flag().
2004/04/14: [bug]  (thanks Isao Sonobe)
                   undefined bytecode error happens if ONIG_OPTION_FIND_LONGEST
                   is setted.
                   should finish matching process if find-condition
                   is fail at OP_END in match_at().
2004/04/12: [impl] add ambig_flag to regex_t.
2004/04/09: [impl] move onig_set_meta_char() to regsyntax.c.
2004/04/09: [bug]  (thanks HIROSE Masaaki) fix onig_version().
2004/04/08: [impl] add regsyntax.c.
2004/04/07: [new]  support UTF-16 LE. (ONIG_ENCODING_UTF16_LE)
2004/04/05: [impl] add ONIGENC_CTYPE_NEWLINE.
2004/04/05: [memo] (thanks Kazuo Saito)
                   Oniguruma 2.2.6 was merged to Ruby 1.9.0.
2004/04/02: [memo] Version 2.2.6 was released.
2004/03/26: [new]  support UTF-16 BE. (ONIG_ENCODING_UTF16_BE)
2004/03/25: [spec] support non 8-bit encodings.
2004/03/16: [memo] 2.X branch for 8-bit encodings only.
2004/03/16: Version 2.2.5
2004/03/16: [test] success in ruby 1.8.0 (2003-08-08) [i386-mswin32].
2004/03/16: [test] success in ruby 1.9.0 (2004-02-24) [i686-linux].
2004/03/16: [impl] add property name to error message of
                   ONIGERR_INVALID_CHAR_PROPERTY_NAME.
2004/03/16: [spec] allow prefix 'Is' for \p{...} in ONIG_SYNTAX_PERL.
                   add syntax op. ONIG_SYN_OP2_CHAR_PROPERTY_PREFIX_IS.
2004/03/15: [dist] add sample/syntax.c.
2004/03/15: [spec] support NOT op. in char property. \p{^...}, \P{^...}.
                   add syntax op. ONIG_SYN_OP2_ESC_P_BRACE_CIRCUMFLEX_NOT.
2004/03/15: [spec] rename ONIG_SYN_OP2_ESC_P_CHAR_PROPERTY to
                   ONIG_SYN_OP2_ESC_P_BRACE_CHAR_PROPERTY.
2004/03/10: [impl] move ONIGERR_XXX from regenc.h to oniguruma.h,
                   rename ONIGERR_XXX to ONIGENCERR_XXX in regenc.h.
2004/03/08: [impl] (thanks eban)
                   replace defined(__CYGWIN__) to defined(__GNUC__).
2004/03/08: [bug]  (thanks eban) [ruby-dev:23172]
                   need to separate initialization for bcc32.
2004/03/06: [memo] (thanks Kazuo Saito)
                   Oniguruma 2.2.4 was merged to Ruby 1.9.0.
2004/03/05: [API]  change second argument type of onig_set_meta_char()
                   from unsigned int to OnigCodePoint.
2004/03/05: [dist] (thanks Kazuo Saito)
                   add MANIFEST-RUBY.
2004/03/04: Version 2.2.4
2004/03/04: [impl] (thanks Moriyoshi Koizumi)
                   fix many warnings in Win32 VC++ with /W3 option.
2004/03/02: Version 2.2.3
2004/03/02: [bug]  (thanks Isao Sonobe)
                   return invalid capture region value if capture history
                   is used. (OP_MEMORY_END_PUSH_REC bug)
                   ex. /\g<p>(?@<p>\(\g<s>\)){0}(?<s>(?:\g<p>)*|){0}/
                       .match("((())())")
2004/03/02: [impl] (thanks Kazuo Saito)
                   add :nodoc: to onig_stat_print() for RDoc.
2004/03/02: [impl] don't use ONIG_SOURCE_IS_WRAPPED.
2004/02/27: Version 2.2.2
2004/02/27: [impl] fix the position of onig_stat_print().
2004/02/27: [impl] define ONIG_RUBY_DEFINE_GLOBAL_FUNCTION() in regint.h
                   for ignored by RDoc.
2004/02/26: Version 2.2.1
2004/02/26: [bug]  [bugs.php.net:#26677] (thanks behrens)
                   invalid definition at onig_error_code_to_str()
                   in the case of NOT HAVE_STDARG_PROTOTYPES.
2004/02/25: Version 2.2.0
2004/02/25: [test] success in ruby 1.8.0 (2003-08-08) [i386-mswin32].
2004/02/24: [test] success in ruby 1.9.0 (2004-02-24) [i686-linux].
2004/02/24: [bug]  undefined IS_BLANK() and IS_GRAPH() was used in
                   onigenc_is_code_ctype() in the case of Ruby M17N.
2004/02/24: [new]  support ISO-8859-16. (ONIG_ENCODING_ISO_8859_16)
2004/02/24: [bug]  should not fold match for 0xdf in iso8859_6.c.
2004/02/24: [new]  support ISO-8859-14. (ONIG_ENCODING_ISO_8859_14)
2004/02/23: [new]  support ISO-8859-13. (ONIG_ENCODING_ISO_8859_13)
2004/02/23: [new]  support ISO-8859-10. (ONIG_ENCODING_ISO_8859_10)
2004/02/20: [bug]  fix iso_8859_4_mbc_is_case_ambig().
2004/02/20: [new]  support ISO-8859-9. (ONIG_ENCODING_ISO_8859_9)
2004/02/19: [bug]  correct ctype tables for ISO-8859-3, ISO-8859-4, 
                   ISO-8859-6, ISO-8859-7, ISO-8859-8, KOI8_R.
2004/02/18: [bug]  wrong replaced name OnigSyntaxGnuOnigex.
2004/02/17: [spec] check capture status for empty infinite loop.
                   [ruby-dev:20224] etc...
                   ex. /(?:\1a|())*/.match("a"),
                       /(?:()|()|()|(x)|()|())*\2b\5/.match("b")
                   add USE_INFINITE_REPEAT_MONOMANIAC_MEM_STATUS_CHECK.
                   add OP_NULL_CHECK_END_MEMST, OP_NULL_CHECK_END_MEMST_PUSH.
                   add stack type STK_NULL_CHECK_END.
2004/02/13: [impl] add OnigEncodingEUC_CN to enc/euc_kr.c.
2004/02/13: [bug]  (thanks Simon Strandgaard)
                   parsing of nested repeat was invalid.
                   ex. /ab{2,3}*/ was /(?:a(?:b{2,3}))*/,
                       should be /a(?:b{2,3}*)/
2004/02/12: [bug]  (thanks Simon Strandgaard)
                   OP_REPEAT_INC_NG process in match_at() is wrong.
                   ex. bad match /a.{0,2}?a/ =~ "0aXXXa0"
2004/02/12: [bug]  (thanks Simon Strandgaard)
                   wrong fetch after (?x) option.  ex. "(?x)\ta .\n+b"
2004/02/12: [bug]  (thanks Simon Strandgaard)
                   [\^] is not a empty char class.
2004/02/09: [new]  add onig_set_syntax_op(), onig_set_syntax_op2(),
                   onig_set_syntax_behavior(), onig_set_syntax_options().
2004/02/06: [dist] add a new target 'site' to Makefile.in.
2004/02/06: [dist] add index.html.
2004/02/03: [bug]  oniggnu.h was not installed by 'make install'.
2004/02/02: Version 2.1.0
2004/02/02: [test] success in ruby 1.9.0 (2004-02-02) [i686-linux].
2004/02/02: [test] success in ruby 1.8.0 (2003-08-08) [i386-cygwin].
2004/02/02: [test] success in ruby 1.8.0 (2003-08-08) [i386-mswin32].
2004/02/02: [new]  support ISO-8859-11. (ONIG_ENCODING_ISO_8859_11)
2004/02/02: [new]  support ISO-8859-5. (ONIG_ENCODING_ISO_8859_5)
2004/02/02: [impl] should check single byte encoding or not in and_cclass()
                   and or_cclass().
2004/01/30: [dist] add oniggnu.h.
2004/01/30: [bug]  ISO-8859-7 0xb7 (middle dot) is Punct type.
2004/01/30: [new]  support ISO-8859-8. (ONIG_ENCODING_ISO_8859_8)
2004/01/29: [new]  support ISO-8859-7. (ONIG_ENCODING_ISO_8859_7)
2004/01/29: [new]  support ISO-8859-6. (ONIG_ENCODING_ISO_8859_6)
2004/01/28: [new]  support KOI8-R. (ONIG_ENCODING_KOI8_R)
2004/01/28: [new]  support KOI8. (ONIG_ENCODING_KOI8)
2004/01/27: [dist] rename enc/isotable.c to enc/mktable.c.
2004/01/27: [new]  support ISO-8859-4. (ONIG_ENCODING_ISO_8859_4)
2004/01/26: [new]  support ISO-8859-3. (ONIG_ENCODING_ISO_8859_3)
2004/01/26: [bug]  EncISO_8859_{1,15}_CtypeTable[256] was wrong.
                   (0x80 - 0xff is not ASCII)
2004/01/23: [new]  support ISO-8859-2. (ONIG_ENCODING_ISO_8859_2)
2004/01/23: [dist] add enc/isotable.c.
2004/01/22: [new]  support EUC-TW. (ONIG_ENCODING_EUC_TW)
2004/01/22: [bug]  definition of GET_ALIGNMENT_PAD_SIZE() and
                   ALIGNMENT_RIGHT() was wrong.
                   type casting should be unsigned int, not int.
2004/01/22: [impl] add defined(__x86_64) || defined(__x86_64__)
                   to unaligned word access condition. (AMD64 ?)
2004/01/21: [dist] rename enc/eucjp.c to enc/euc_jp.c.
2004/01/21: [new]  support EUC-KR. (ONIG_ENCODING_EUC_KR)
2004/01/20: [test] success in ruby 1.8.0 (2003-08-08) [i386-cygwin].
2004/01/20: [dist] change Makefile.in.
2004/01/20: [spec] add \p{...}, \P{...} in char class.
2004/01/20: [new]  character property operators \p{...}, \P{...}.
                   supported in ONIG_SYNTAX_JAVA and ONIG_SYNTAX_PERL.
2004/01/19: [spec] allow /a{,n}/ as /a{0,n}/. (but don't allow /a{,}/)
2004/01/19: [dist] rename onigcomp200.h to onigcmpt200.h.
2004/01/19: [dist] update re.c.168.patch. svn add re.c.181.patch.
2004/01/16: [dist] update sample/*.c for new API.
2004/01/16: [dist] add onigcomp200.h. (for old API compatibility)
2004/01/16: [dist] update documents API, RE and RE.ja.
2004/01/16: [spec] change prefix REG_ -> ONIG_, regex_ onig_,
                   ENC_ -> ONIGENC, enc_ -> onigenc_.
2004/01/15: [impl] rename ENC_IS_MBC_E_WORD() to ENC_IS_MBC_WORD().
                   rename ENC_CTYPE_SUPPORT_LEVEL_SB_ONLY to
                   ENC_CTYPE_SUPPORT_LEVEL_SB.
2004/01/14: [impl] rename UNALIGNED_WORD_ACCESS to
                   PLATFORM_UNALIGNED_WORD_ACCESS.
2004/01/14: [impl] change MATCH_STACK_LIMIT_SIZE value from 200000 to 500000.
2004/01/13: [impl] remove ENC_CODE_TO_MBC_FIRST(enc,code) in regenc.h.
                   remove code_to_mbc_first member in RegCharEncodingType.
2004/01/13: [impl] remove head byte bitset information in cclass->mbuf.
2003/12/26: [impl] change macro name ismb_xxxx() in enc/*.c for
                   escape conflict.
2003/12/24: Version 2.0.0
2003/12/24: [spec] ignore case option is effective to numbered char.
                   ex. /\x61/i =~ "A"
2003/12/24: [test] success in ruby 1.8.1 (2003-12-24) [i686-linux].
2003/12/24: [test] success in ruby 1.8.0 (2003-08-08) [i386-cygwin].
2003/12/24: [test] success in ruby 1.8.0 (2003-08-08) [i386-mswin32].
2003/12/24: [test] success in regex.c compile test on ruby-m17n.
                   (but can't make miniruby because re.c patch fail.)
2003/12/24: [bug]  (thanks H.Miyamoto) /[\W]/ was wrong in 1.9.5.
2003/12/22: [spec] implement fold match on UTF-8 encoding.
2003/12/19: [impl] add ctype_support_level and ctype_add_codes() member to
                   RegCharEncoding type.
2003/12/19: [impl] add add_ctype_to_cc() in regparse.c.
2003/12/19: [impl] add enc_is_code_ctype() in REG_RUBY_M17N case.
2003/12/19: [impl] change ENC_CODE_TO_MBC() interface.
2003/12/18: [new]  implement fold match. (variable number of char
                   match in ignore case mode.)
                   ex. German alphabet ess-tsett(U+00DF) match "SS" and "ss".
2003/12/17: [impl] refactoring of encoding system.
2003/12/17: [impl] add enc_init() in regenc.c.
2003/12/17: [new]  support Big5. (REG_ENCODING_BIG5)
2003/12/16: [impl] change CodePoint from unsigned int to unsigned long.
2003/12/16: [new]  support ISO 8859-15. (REG_ENCODING_ISO_8859_15)
2003/12/16: [impl] change P_() macro definition condition for Win32.
2003/12/16: [dist] add sample/encode.c
2003/12/16: [new]  support ISO 8859-1. (REG_ENCODING_ISO_8859_1)
2003/12/15: [impl] rename IS_ENC_XXXX to ENC_IS_XXXX.
2003/12/15: [impl] rename RegDefaultCharEncoding to EncDefaultCharEncoding.
2003/12/15: [impl] divide encoding files. (enc/ascii.c, enc/utf8.c etc...)
2003/12/15: [bug]  unexpected infinite loop in regex_snprintf_with_pattern().
                   change local var. type char* to UChar*.
2003/12/15: [impl] remove REG_MBLEN_TABLE[].
2003/12/15: [spec] rename function prefix regex_get_prev_char_head(),
                   regex_get_left_adjust_char_head() and
                   regex_get_right_adjust_char_head() to enc_xxxxxx().
2003/12/15: [impl] rename function prefixes in regenc.h from regex_ to enc_.
2003/12/12: [impl] remove USE_SBMB_CLASS.
2003/12/12: [impl] rename mb -> mbc, mblen() to enc_len().
2003/12/12: [impl] rename WCINT to CodePoint.
2003/12/11: [impl] delete IS_XXXX() ctype macros from regint.h.
2003/12/11: [impl] add enc->wc_is_ctype() and RegAsciiCtypeTable[256].
2003/12/11: [impl] remove RegAsciiCaseAmbigTable.
2003/12/10: [impl] use ENC_TO_LOWER() for ignore case comparison.
2003/12/08: [impl] *** re-defined RegCharEncoding in oniguruma.h. ***
2003/12/08: [impl] add USE_POSIX_REGION_OPTION to regint.h.
2003/12/08: [impl] add IS_ENC_WORD() to regenc.h.
2003/12/05: [impl] rename IS_CODE_XXXX() to IS_ENC_XXXX().
2003/12/05: [impl] delete IS_CODE_WORD() from regenc.h.
2003/12/04: [spec] rename REG_SYN_OP_BACK_REF to REG_SYN_OP_DECIMAL_BACKREF.
2003/12/04: [spec] add (REG_SYN_OP_ESC_W_WORD | REG_SYN_OP_ESC_B_WORD_BOUND |
                   REG_SYN_OP_ESC_LTGT_WORD_BEGIN_END | REG_SYN_OP_BACK_REF)
                   to RegSyntaxGrep.
2003/12/04: [spec] remove REG_ENCODING_DEFAULT and REGCODE_DEFAULT.
2003/12/04: [spec] move declarations of regex_get_default_encoding() and
                   regex_set_default_encoding() from oniguruma.h to regenc.h.
2003/12/03: [new]  add regex_get_default_encoding() and
                   regex_set_default_encoding().
2003/12/03: [spec] REG_ENCODING_DEFAULT meaning is changed.
                   (current default value, not initial default value.)
2003/12/03: [spec] REGCODE_XXX is obsoleted. use REG_ENCODING_XXX.
2003/12/02: [memo] alias svnst='svn status | grep -v "^\?"'
2003/12/02: [spec] move regex_set_default_trans_table() declaration
                   from oniguruma.h to regenc.h. (obsoleted API)
2003/12/02: [impl] move variables RegDefaultCharEncoding, DefaultTransTable and
                   AmbiguityTable to regenc.c.
2003/12/01: [impl] add regex_continuous_sbmb() to regenc.c.
2003/12/01: [dist] add regenc.h and regenc.c.
2003/11/18: [dist] change testconv.rb.
2003/11/18: [bug]  (thanks Masaru Tsuda)
                   memory leak in parse_subexp().
2003/11/18: [bug]  (thanks Masaru Tsuda)
                   memory leak in names_clear() and parse_char_class().
2003/11/17: [bug]  memory leak in parse_char_class().
2003/11/17: [bug]  (thanks Masaru Tsuda)
                   OptExactInfo length should not over OPT_EXACT_MAXLEN.
                   (concat_opt_exact_info_str())
2003/11/12: Version 1.9.5
2003/11/12: [test] success in ruby 1.8.0 (2003-08-08) [i386-cygwin].
2003/11/12: [test] success in ruby 1.8.1 (2003-11-11) [i686-linux].
2003/11/12: [spec] add definition of REG_INEFFECTIVE_META_CHAR.
2003/11/11: [dist] add a sample program sample/sql.c.
2003/11/11: [new]  add variable meta character.
                   regex_set_meta_char()
2003/11/11: [spec] add syntax op. REG_SYN_OP_VARIABLE_META_CHARS.
2003/11/11: [spec] rename REG_SYN_OP_ESC_CAPITAL_Q_QUOTE to
                   REG_SYN_OP2_ESC_CAPITAL_Q_QUOTE,
                   REG_SYN_OP_QMARK_GROUP_EFFECT to 
                   REG_SYN_OP2_QMARK_GROUP_EFFECT.
2003/11/06: [impl] define THREAD_PASS as rb_thread_schedule() in Ruby mode.
2003/11/05: [spec] add syntax behavior REG_SYN_WARN_REDUNDANT_NESTED_REPEAT.
2003/11/05: [spec] rename REG_SYN_WARN_FOR_CC_OP_NOT_ESCAPED to
                   REG_SYN_WARN_CC_OP_NOT_ESCAPED.
2003/11/04: [new]  add regex_set_warn_func() and regex_set_verb_warn_func().
2003/10/30: [new]  add regex_name_to_backref_number().
                   (for multiplex definition name, see sample/names.c)
2003/10/30: [spec] add name_end and reg argument to callback function of
                   regex_foreach_name().  (see sample/names.c)
2003/10/29: [spec] add syntax behavior REG_SYN_ALLOW_MULTIPLEX_DEFINITION_NAME.
                   add error code REGERR_MULTIPLEX_DEFINED_NAME.
2003/10/14: [dist] modify sample/simple.c.
2003/10/03: [bug]  (thanks nobu)  [ruby-dev:21472]
                   sub-anchor of optimization map info was wrong
                   in concat_left_node_opt_info().
                   ex. /^(x?y)/ = "xy" fail. 
2003/09/17: Version 1.9.4
2003/09/17: [spec] change specification of char-class range in ignore case mode
                   follows with Ruby 1.8(2003-09-17).
                   ex. /[H-c]/i ==> (H-Z, 0x5b-0x60, a-c)/i
                                ==> H-Z, h-z, 0x5b-0x60, a-c, A-C
2003/09/16: [bug]  (thanks Guy Decoux)
                   remove env->option == option check in parse_effect().
                   change env->option for dynamic option in parse_exp().
                   (ex. bad match /(?i)(?-i)a/ =~ "A")
2003/09/12: [spec] rename REG_SYN_ALLOW_RANGE_OP_IN_CC to
                   REG_SYN_ALLOW_DOUBLE_RANGE_OP_IN_CC,
                   REG_SYN_ESCAPE_IN_CC to REG_SYN_BACKSLASH_ESCAPE_IN_CC.
2003/09/11: [bug]  change to IS_SYNTAX_OP2 at REG_SYN_OP2_ESC_GNU_BUF_ANCHOR.
2003/09/09: [spec] rename REG_SYN_OP2_ESC_M_BAR_META to
                   REG_SYN_OP2_ESC_CAPITAL_M_BAR_META,
                   REG_SYN_OP_ESC_Q_QUOTE to REG_SYN_OP_ESC_CAPITAL_Q_QUOTE,
                   REG_SYN_OP_ESC_SUBEXP to REG_SYN_OP_ESC_LPAREN_SUBEXP,
                   REG_SYN_OP_ESC_BUF_ANCHOR to REG_SYN_OP_ESC_AZ_BUF_ANCHOR,
                   REG_SYN_OP_ESC_GNU_BUF_ANCHOR to
                   REG_SYN_OP2_ESC_GNU_BUF_ANCHOR,
                   REG_SYN_OP_ESC_CONTROL_CHAR to REG_SYN_OP_ESC_CONTROL_CHARS,
                   REG_SYN_OP_ESC_WORD to REG_SYN_OP_ESC_W_WORD,
                   REG_SYN_OP_ESC_WORD_BEGIN_END to
                   REG_SYN_OP_ESC_LTGT_WORD_BEGIN_END,
                   REG_SYN_OP_ESC_WORD_BOUND to REG_SYN_OP_ESC_B_WORD_BOUND,
                   REG_SYN_OP_ESC_WHITE_SPACE to REG_SYN_OP_ESC_S_WHITE_SPACE,
                   REG_SYN_OP_ESC_DIGIT to REG_SYN_OP_ESC_D_DIGIT,
                   REG_SYN_OP_CC to REG_SYN_OP_BRACKET_CC,
                   REG_SYN_OP2_CCLASS_SET to REG_SYN_OP2_CCLASS_SET_OP,
                   REG_SYN_CONTEXT_INDEP_OPS to
                   REG_SYN_CONTEXT_INDEP_REPEAT_OPS,
                   REG_SYN_CONTEXT_INVALID_REPEAT_OPS to
                   REG_SYN_CONTEXT_INVALID_REPEAT_OPS.
                   add REG_SYN_OP_ESC_CAPITAL_G_BEGIN_ANCHOR.
2003/09/08: [spec] rename REG_SYN_OP_ANYCHAR to REG_SYN_OP_DOT_ANYCHAR,
                   REG_SYN_OP_0INF to REG_SYN_OP_ASTERISK_ZERO_INF,
                   REG_SYN_OP_ESC_0INF to REG_SYN_OP_ESC_ASTERISK_ZERO_INF,
                   REG_SYN_OP_1INF to REG_SYN_OP_PLUS_ONE_INF,
                   REG_SYN_OP_ESC_1INF to REG_SYN_OP_ESC_PLUS_ONE_INF,
                   REG_SYN_OP_0INF to REG_SYN_OP_QMARK_ZERO_ONE,
                   REG_SYN_OP_ESC_0INF to REG_SYN_OP_ESC_QMARK_ZERO_ONE,
                   REG_SYN_OP_INTERVAL to REG_SYN_OP_BRACE_INTERVAL,
                   REG_SYN_OP_ESC_INTERVAL to REG_SYN_OP_ESC_BRACE_INTERVAL,
                   REG_SYN_OP_SUBEXP to REG_SYN_OP_LPAREN_SUBEXP,
                   REG_SYN_OP_ALT to REG_SYN_OP_VBAR_ALT,
                   REG_SYN_OP_ESC_ALT to REG_SYN_OP_ESC_VBAR_ALT,
                   REG_SYN_OP_NON_GREEDY to REG_SYN_OP_QMARK_NON_GREEDY,
                   REG_SYN_OP_SUBEXP_EFFECT to REG_SYN_OP_QMARK_GROUP_EFFECT,
                   REG_SYN_OP2_POSSESSIVE_{REPEAT,INTERVAL} to
                   REG_SYN_OP2_PLUS_POSSESSIVE_{REPEAT,INTERVAL},
                   REG_SYN_OP2_SUBEXP_CALL to REG_SYN_OP2_ESC_G_SUBEXP_CALL,
                   REG_SYN_OP2_NAMED_GROUP to REG_SYN_OP2_QMARK_LT_NAMED_GROUP
                   and REG_SYN_OP2_ESC_K_NAMED_BACKREF.
2003/09/02: [tune] call reduce_nested_qualifier() after disabling capture for
                   no-name group in noname_disable_map().
                   ex. /(a+)*(?<name>...)/
2003/09/02: [impl] include <stdio.h> is forgotten to erase in regcomp.c.
2003/09/01: [dist] update doc/RE and doc/RE.ja.
2003/08/26: [bug]  (thanks Guy Decoux)
                   should not double free node at the case TK_CC_CC_OPEN
                   in parse_char_class().  
2003/08/19: Version 1.9.3
2003/08/19: [inst] change re.c.180.patch.
2003/08/19: [impl] rename 'list of captures' to 'capture history'.
2003/08/19: [dist] add doc/RE.ja. (Japanese)
2003/08/19: [new]  add regex_copy_syntax().
2003/08/19: [spec] rename REG_SYN_OP2_ATMARK_LIST_OF_CAPTURES to
                   REG_SYN_OP2_ATMARK_CAPTURE_HISTORY.
2003/08/18: [spec] (thanks nobu)
                   don't use IMPORT in oniguruma.h and onigposix.h.
2003/08/18: [impl] (thanks nobu) change error output to stdout in testconv.rb. 
2003/08/18: [inst] (thanks nobu) lacked $(srcdir) in Makefile.in.  
2003/08/18: [bug]  REG_MBLEN_TABLE[SJIS][0xFD-0xFF] should be 1.
2003/08/18: [bug]  (thanks nobu) mbctab_sjis[0x80] should be 0.
2003/08/18: [bug]  (thanks nobu)
                   single/multi-byte decision was wrong in parse_char_class().
                   add regex_wc2mblen().
                   should not set fetched to 1 in TK_RAW_BYTE case.
2003/08/18: [bug]  should update BitSet in the case inc_n >= 0
                   in add_wc_range_to_buf().
2003/08/13: [bug]  change re.c.180.patch for fix rb_reg_to_s() in re.c.
2003/08/11: [bug]  should clear region->list in regex_region_resize().
2003/08/08: Version 1.9.2
2003/08/08: [test] success in ruby 1.8.0 (2003-08-08) on Windows 2000
                   VC++ 6.0 and Cygwin.
2003/08/08: [impl] don't define macro vsnprintf for WIN32 platform,
                   because definition is added in win32\win32.h.
2003/08/08: [test] success in ruby 1.8.0 and ruby 1.6.8(2003-08-03) on Linux.
2003/08/08: [dist] change re.c.180.patch and re.c.168.patch.
2003/08/08: [new]  (thanks akr)
                   implemented list of captures. (?@...), (?@<name>...)
2003/08/07: [dist] add sample/listcap.c.
2003/08/06: [bug]  OP_MEMORY_END_PUSH_REC case in match_at().
                   renewal of mem_start_stk[] should be after
                   STACK_PUSH_MEM_END() call.
2003/07/29: [new]  add regex_get_encoding(), regex_get_options() and
                   regex_get_syntax().
2003/07/25: [spec] (thanks akr)
                   change group(...) to shy-group(?:...) if named group is 
                   used in the pattern.
                   add REG_SYN_CAPTURE_ONLY_NAMED_GROUP.
2003/07/24: [spec] rename REG_OPTION_CAPTURE_ONLY_NAMED_GROUP to
                   REG_OPTION_DONT_CAPTURE_GROUP.
                   add REG_OPTION_CAPTURE_GROUP.
2003/07/17: [spec] rename REG_SYN_OP2_NAMED_SUBEXP to REG_SYN_OP2_NAMED_GROUP.
2003/07/17: [spec] add REGERR_EMPTY_GROUP_NAME.
2003/07/17: [spec] rename REGERR_INVALID_SUBEXP_NAME
                       to REGERR_INVALID_CHAR_IN_GROUP_NAME.
2003/07/17: [spec] restrict usable chars of group name to alphabet, digit,
                   '_' or multibyte-char in fetch_name(). [ruby-dev:20706]
2003/07/16: [impl] minor change of sample/names.c.
2003/07/14: [impl] rename USE_NAMED_SUBEXP to USE_NAMED_GROUP.
2003/07/14: [bug]  add fetch_name() for USE_NAMED_SUBEXP off case.
2003/07/14: [API]  add regex_number_of_names().
2003/07/08: [impl] change error message for undefined group number call.
                       'undefined group reference: /(a)\g<2>/'
                   --> 'undefined group <2> reference: /(a)\g<2>/'
2003/07/08: [dist] modify doc/RE.
2003/07/07: [impl] OP_SET_OPTION is not needed in compiled code.
                   add IS_DYNAMIC_OPTION() to regint.h.
2003/07/07: [spec] called group should not ignore outside option (?i:...).
                   ex. /(?i:(?<n>(a)\2)){0}\g<n>/.match("aA")
                   add opcode OP_BACKREFN_IC and OP_BACKREF_MULTI_IC.
                   set option status to effect memory in optimize_node_left().
2003/07/07: [impl] add opcode OP_ANYCHAR_ML, OP_ANYCHAR_ML_STAR and
                   OP_ANYCHAR_ML_START_PEEK_NEXT.
2003/07/07: [bug]  (thanks nobu) REG_MBLEN_TABLE[SJIS][0x80] should be 1. 
2003/07/07: [spec] rename REG_SYN_OP_QUOTE to REG_SYN_OP_ESC_Q_QUOTE.
2003/07/04: Version 1.9.1
2003/07/04: [new]  add REG_OPTION_CAPTURE_ONLY_NAMED_GROUP. (thanks .NET)
2003/07/04: [spec] check mbuf member in the case of
                   REG_SYN_NOT_NEWLINE_IN_NEGATIVE_CC in parse_char_class().
2003/07/04: [spec] typo REG_SYN_WARN_FOR_CC_OP_NOT_ESCAPEED.
                   should be REG_SYN_WARN_FOR_CC_OP_NOT_ESCAPED.
2003/07/04: [bug]  conflict values on REG_SYN_WARN_FOR_CC_OP_NOT_ESCAPEED and
                   REG_SYN_NOT_NEWLINE_IN_NEGATIVE_CC.  (thanks nobu)
2003/07/03: [spec] add REG_SYN_OP_ESC_CONTROL_CHAR flag.
2003/07/03: [spec] remove REG_SYN_OP_ESC_OCTAL3 and REG_SYN_OP_ESC_X_HEX2
                   flag from RegSyntaxGnuRegex.
2003/07/03: [spec] remove REG_SYN_OP_NON_GREEDY flag from RegSyntaxGnuRegex.
2003/07/02: [dist] fix doc/RE.
2003/07/01: [impl] add config flag USE_VARIABLE_SYNTAX.
                   (turn off variable syntax on Ruby)
2003/07/01: [spec] add syntax behavior REG_SYN_DIFFERENT_LEN_ALT_LOOK_BEHIND.
2003/06/30: [spec] allow different length top-level alternatives
                   in look-behind.    ex. (?<=abc|abcd), (?<!a|bc)
2003/06/26: [spec] add option REG_OPTION_NEGATE_SINGLELINE.
2003/06/26: [spec] should default on REG_OPTION_SINGLELINE
                   for REG_SYNTAX_PERL and REG_SYNTAX_JAVA.
2003/06/26: [impl] add options member to RegStntaxType.
2003/06/26: [spec] don't change the meaning of '\Z' for REG_OPTION_SINGLELINE.
2003/06/25: [dist] don't use option REG_NEWLINE for sample/posix.c.
2003/06/25: [dist] modify testconv.rb.
                   should match and convert double quoted string data.
                   ex. x(/\ca/, "\001", 0, 1)
2003/06/25: [impl] add REG_SYN_OP2_ESC_CAPITAL_C_BAR_CONTROL and
                   REG_SYN_OP2_ESC_M_BAR_META.
2003/06/25: [impl] add REG_SYN_OP_ESC_OCTAL3 and REG_SYN_OP_ESC_X_HEX2.
2003/06/24: [impl] add REG_SYN_OP2_ESC_V_VTAB. (\v is VTAB)
2003/06/24: [bug]  should invert REG_OPTION_SINGLELINE flag
                   in REG_SYN_OP2_OPTION_PERL.
2003/06/24: [impl] add REG_SYN_OP2_OPTION_PERL and REG_SYN_OP2_OPTION_RUBY.
                   meaning of (?m) and (?s) are depend on syntax.
2003/06/20: Version 1.9.0
2003/06/20: [spec] \Q...\E is not effective on REG_SYNTAX_RUBY. (thanks akr)
2003/06/19: [inst] rename regex.h to oniguruma.h.
2003/06/18: [impl] change REG_EXTERN setting condition. (__CYGWIN__)
2003/06/18: [bug]  return wrong result UTF-8 case in regex_mb2wc().
2003/06/18: [impl] add REG_SYN_OP2_POSSESSIVE_INTERVAL.  a{n,m}+
2003/06/18: [new]  add REG_SYNTAX_JAVA.
2003/06/18: [spec] add REG_SYN_OP_QUOTE.
2003/06/18: [spec] add op2 member to RegSyntaxType.
                   rename some REG_SYN_OP_XXX to REG_SYN_OP2.
2003/06/16: [new]  Perl-like quotation operator \Q, \E.
2003/06/16: [spec] should not control ignore case mode by escaped char.
                   ex. /\J/i =~ "j", /[\J]/i =~ "j"    (same as Perl)
2003/06/13: [bug]  modify onigposix.h.
2003/06/13: [bug]  should use -DIMPORT for link with DLL in win32/Makefile.
2003/06/13: [dist] add sample/names.c
2003/06/12: [bug]  range should be from - 1 in not_wc_range_buf().
2003/06/12: [spec] should warn for '-' before '&&' operator in char-class.
2003/06/12: [new]  add REG_SYNTAX_PERL.
2003/06/12: [spec] add syntax behavior REG_SYN_WARN_FOR_CC_OP_NOT_ESCAPEED.
2003/06/12: [spec] invalid POSIX bracket should be error.   ex. [[:upper :]]
2003/06/11: [new]  char-class in char-class (as Java(TM)).
2003/06/11: [spec] change AND operator in char-class from &&[..] to &&. 
2003/06/04: [spec] {n,m}+ should not be possessive operator.
                   ex. a{3}+ should be (?:a{3})+
2003/06/03: [bug]  should compare strings with min-length in is_not_included().
2003/06/03: [impl] automatic possessivate optimization.  a*b ==> (?>a*)b
                   (thanks Jeffrey E. F. Friedl)
2003/06/02: [impl] remove multibyte-BitSet for OP_CCLASS_MB/OP_CCLASS_MB_NOT.
2003/05/30: [new]  char class intersection operator &&[...] like Java(TM).
                   (thanks akr)
2003/05/30: [bug]  should use bbuf_free() for CClassNode in regex_node_free().
2003/05/29: [bug]  wrong usage of syntax REG_SYN_ALLOW_EMPTY_RANGE_IN_CC.
                   /[d-a]/ should be error.
2003/05/28: [impl] optimize stop-backtrack compiled code.
                   (/(?>a*)/, /(?>\w+)/ etc...)
                   add OP_POP opcode.
2003/05/28: [new]  possessive repeat operator. (?+, *+, ++, {n,m}+)
2003/05/27: [spec] '-' at beginning of char-class should be warn only if
                   it is start of range.  (ex. /[--a]/)
2003/05/27: [spec] should not warn for right bracket at beginning of pattern.
                   ex. /]aaa/
2003/05/27: [spec] change CCEND_ESC_WARN() from VERB_WARNING() to WARNING().
2003/05/27: [spec] /[]aaa/ should be empty char-class error.
                   /[]aaa]/ should be warn for 'without backslash'.
                   (add char_exist_check() in regparse.c)
2003/05/26: [bug]  OP_REPEAT in recursive subexp call.
                   ex. /(?<n>(a|b\g<n>c){3,5})/.match("baaaaca") => "baaaaca"
                       was wrong result. (should be "aaaa")
2003/05/26: [impl] add num_call member to regex_t.
2003/05/26: [impl] add repeat_range member to regex_t.
                   (for delete upper,lower members from StackType.u.repeat)
2003/05/26: [bug]  change print_names() to external regex_print_names().
2003/05/26: [tune] change OP_NULL_CHECK_END process in match_at().
2003/05/26: [spec] change CCEND_ESC_WARN() from WARNING() to VERB_WARNING().
2003/05/26: [spec] remove POSIXLINE option. (?p:...)
                   (be made the same as Ruby.)
2003/05/22: [spec] use OP_NULL_CHECK_XXX only if repeat is infinite.
                   prev. /(?:()|()){0,10}\1\2/ =~ ""  ==> FAIL
                   now   /(?:()|()){0,10}\1\2/ =~ ""  ==> MATCH
2003/05/22: [impl] change target_empty setting condition in setup_tree().
2003/05/19: [impl] avoid zero length repeat optimization.  (thanks matz)
                   /()*/ ==> /()?/, /()+/ ==> /()/ etc...
2003/05/19: [impl] minor changes for gcc -Wall. (-DREG_DEBUG_STATISTICS case)
2003/05/19: [spec] rename regex_foreach_names() to regex_foreach_name().
2003/05/16: [new]  add --with-statistics option to configure.
2003/05/16: [bug]  move RegOpInfo[] definition to regint.h.
2003/05/16: [new]  add regex_version().
2003/05/14: Version 1.8.6
2003/05/14: [bug]  use _vsnprintf() on Win32.
2003/05/14: [spec] define USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE.
                   (/\n$/ =~ "\n", /\n\Z/ =~ "\n") [ruby-dev:20125]
2003/05/14: [impl] minor changes for gcc -Wall.
2003/05/14: [impl] add string.h check in AC_CHECK_HEADERS().
2003/05/13: [impl] minor changes for gcc -Wall.
2003/05/13: [impl] add regex_snprintf_with_pattern().
2003/05/13: [spec] add warning for char class meta character without escape
                   in Ruby mode ('[', '-', ']').
2003/05/13: [impl] define WARNING() and VERB_WARNING() in regint.h.
2003/05/13: [bug]  correct is_code_ascii() for /[[:ascii:]]/.
2003/05/12: [dist] add regular expression document (doc/RE).
2003/05/12: [spec] specification of $(END_LINE) was made the same as Ruby 1.8.
                   [ruby-dev:20130]     (thanks matz)
2003/05/12: [memo] shifted to Subversion(version 0.21.0) from CVS.
2003/03/19: Version 1.8.5
2003/03/19: [impl] change REG_EXTERN definition.   (thanks nobu)
2003/03/19: [impl] abbreviation for long error_par in regex_error_code_to_str().
2003/03/18: [dist] change re.c.XXX.patch for GNU regex API changes.
2003/03/18: [spec] change API regex_new(), regex_recompile() and
                   regex_error_code_to_str().
                   change API re_compile_pattern() and re_recompile_pattern().
2003/03/18: [spec] replace REGERR_END_PATTERN_AT_GROUP_{COMMENT|OPTION} to
                   REGERR_END_PATTERN_IN_GROUP.
2003/03/17: [impl] should free err_arg.
2003/03/17: [bug]  mistake(high -> to) in add_wc_range_to_buf().
2003/03/17: [spec] add err_arg argument to regex_new() and regex_recompile().
                   for detail error message.  (thanks akr)
2003/03/12: Version 1.8.4
2003/03/12: [tune] use cached value of effect node in get_min_match_length().
2003/03/12: [bug]  escaped alphabet should be TK_RAW_BYTE
                   in fetch_token() and fetch_token_in_cc().
2003/03/12: [spec] change named backref and subexp call format.
                   backref: \k<name>, call: \g<name>     (thanks akr)
2003/03/11: [inst] add regparse.[ch] in win32/Makefile.
2003/03/11: [bug]  if UNALIGNED_WORD_ACCESS isn't setted
                   then compile error in unset_addr_list_fix().  (thanks knu)
2003/03/10: [impl] divide regcomp.c to regcomp.c, regparse.c and regparse.h.
2003/03/10: [bug]  should handle multi-byte code name in fetch_name().
2003/03/10: [spec] remove REGERR_TABLE_FOR_IGNORE_CASE_IS_NOT_SETTED.
2003/03/10: [spec] support POSIX API option REG_NOSUB.
                   add comp_options member to POSIX API regex_t.
2003/03/10: Version 1.8.3
2003/03/10: [bug]  can not compile with Ruby 1.6.8.
                   (inconsistent st.h with 1.6 and 1.8)
                   use hash table on Ruby 1.8 only.
2003/03/10: [spec] forbid to use '\' in group name.
2003/03/08: [impl] remove check_backref_number().
2003/03/08: [bug]  called group in 0-repeat should not be eliminated from
                   compile code.  ex. /(?*n)(?<n>){0}/   (thanks akr)
                   add is_refered member to QualifierNode.
2003/03/07: [impl] use hash table(st.[ch]) for implementation of name table.
                   (enable on Ruby in default)
2003/03/07: [new]  add regex_foreach_names().
2003/03/06: [impl] add member reg->stack_pop_level.
2003/03/06: [impl] add operator OP_MEMORY_START and member reg->backtrack_mem.
2003/03/06: [bug]  if REG_OPTION_FIND_LONGEST or REG_OPTION_NOT_EMPTY,
                   should handle backtrack of MEM_END.
                   add OP_MEMORY_END_PUSH and OP_MEMORY_END_PUSH_REC.
2003/03/06: [impl] rename OP_MEMORY_END_PUSH to OP_MEMORY_END_MARK.
2003/03/06: [spec] change error messages.
2003/03/06: [tune] add tiny_pop check in STACK_POP.
2003/03/05: Version 1.8.2
2003/03/05: [impl] use cache info in EFFECT_MEMORY case
                   in optimize_node_info().
2003/03/05: [impl] add EFFECT_MEMORY node reference count check
                   in optimize_node_left().
2003/03/05: [impl] add min-len, max-len, char-len cache in EffectNode.
2003/03/05: [spec] allow to call in look behind. ex. /(?<=(?*a))/
2003/03/05: [bug]  forgotten N_ANCHOR case in check_backref_number(),
                   subexp_inf_recursive_check_trav() etc...
2003/03/05: [impl] rename USE_ONIGURUMA_EXTENSION to USE_SBMB_CLASS.
2003/03/04: [impl] add CALL-node info in optimize_node_left().
2003/03/04: [spec] prohibit left recursion of subexp call.   ex. (?<n>|(?*n)a)
                   add subexp_inf_recursive_check_trav().
2003/03/04: [spec] rename REG_SYN_STRICT_CHECK_BACKREF_NUMBER
                   to REG_SYN_STRICT_CHECK_BACKREF
2003/03/03: [bug]  /(?<n>a(?*n)|)/ isn't infinite recursion.
                   fix N_LIST case in subexp_recursive_check(). (thanks akr)
2003/03/03: [bug]  /(?<n>|(?*n))+/ segmentation fault.
                   should re-allocate in unset_addr_list_add(). (thanks akr)
2003/03/01: Version 1.8.1
2003/03/01: [bug]  change STACK_GET_MEM_START() and STACK_PUSH_MEM_END().
2003/03/01: [new]  add reg_name_to_group_numbers() to POSIX API.
2003/03/01: [impl] use OP_MEMORY_END_PUSH in callable subexp compiled code
                   only if subexp is recursive.
2003/03/01: [spec] rename regex_name_to_backrefs() to
                   regex_name_to_group_numbers().
2003/02/28: [impl] use function stack_double() instead of macro.
2003/02/28: [new]  subexp call. (?*name)    (thanks akr)
2003/02/28: [spec] add match stack limit check. (MATCH_STACK_LIMIT_SIZE)
2003/02/28: [impl] check recursive subexp call.
2003/02/28: [impl] add opcode OP_MEMORY_END_PUSH for callable subexp.
2003/02/28: [impl] add opcode OP_CALL, OP_RETURN.
                   add stack type STK_CALL_FRAME, STK_RETURN, STK_MEM_END.
2003/02/26: [spec] add new syntax behavior REG_SYN_STRICT_CHECK_BACKREF_NUMBER.
                   if it is setted, then error /(\1)/, /\1(..)/ etc...
2003/02/26: [spec] if backref number is greater than max group number,
                   then return compile error. (REGERR_INVALID_BACKREF_NUMBER)
2003/02/26: [tune] bad implemented N_ALT case in get_min_match_length().
2003/02/26: [dist] auto update testc.c and win32/testc.c in dist target.
2003/02/26: [impl] add -win option to testconv.rb.
2003/02/25: [spec] allow to assign same name to different group.
                   add OP_BACKREF_MULTI.
2003/02/24: [impl] reduce redundant repeat of empty target. 
	           ex. /()*/ ==> /()?/, /()+/ ==> /()/, /(?:)+/ ==> //
2003/02/24: [impl] change condition in regex_is_allow_reverse_match().
2003/02/24: [impl] convert i(/../, ...) functions in testconv.rb.
2003/02/24: [impl] change name table struct.
2003/02/22: Version 1.8.0
2003/02/22: [new]  named subexp, named back reference.  (thanks akr)
                   define: (?<name>...), back-ref: \g<name>
2003/02/22: [impl] use str_node_can_be_split().
2003/02/21: [dist] add sample/posix.c
2003/02/21: [spec] rename some error code symbols.
2003/02/21: [spec] max number of multibyte ranges(255) is small.
                   255 --> 1000.   (thanks MoonWolf)
2003/02/20: [new]  supported Basic Regular Expression(BRE) in POSIX API.
                   (REG_EXTENDED option: Extended RE)
2003/02/20: [new]  variable syntax.
2003/02/12: Version 1.7.2
2003/02/12: [bug]  mismatch /\?a/i.match('?A').
                   check raw value in scan_make_node() and scan_backslash().
                   (thanks Nobu)
2003/02/12: [impl] rename 'max_mem' to 'num_mem' in regex_t.
2003/02/12: [impl] rename 'code' to 'enc' in regex_t.
2003/02/12: [spec] remove transtable argument in regex_new and regex_recompile.
                   remove transtable member in regex_t.
2003/02/10: [inst] change backup file suffix name from '.orig' to '.ruby_orig'.
                   (win32/Makefile)
2003/02/10: [spec] number check in scan_char_class() ignore-case mode.
                   ex. /[\x58-\x64]/i
2003/02/10: [impl] don't use OP_MEMORY_END_PUSH (and STK_MEM_END).
2003/02/10: [impl] lift up head_exact value from child qualifier node to parent.
2003/02/10: [tune] change stack type values.
2003/02/10: [dist] add HISTORY.
2003/02/08: [tune] change stack type values.
2003/02/08: [tune] add STACK_BASE_CHECK().
2003/02/08: [tune] add STACK_PUSH_ENSURED().
2003/02/08: [dist] change contents of doc/API.
2003/02/07: [inst] change backup file suffix name from '.orig' to '.ruby_orig'.
2003/02/07: [spec] range in char-class should be same spec. with Ruby
                   in ignore-case mode. (ex. /[A-c]/i == /[a-c]/i)
                   (thanks MoonWolf)
2003/02/07: [spec] [!--] should be allowed.    (thanks MoonWolf)
2003/02/07: [dist] refresh re.c.180.patch for re.c (2003-02-06).
2003/02/07: Version 1.7.1
2003/02/07: [impl] check first byte of string in ignore-case mode.
                   (get_head_exact_node())
2003/02/07: [impl] remove redundant statements in setup_tree().
2003/02/06: [new]  create Win32 DLL.
2003/02/06: [impl] use P_() macro for function prototype.
2003/02/06: [impl] add HAVE_PROTOTYPE, HAVE_STDARG_PROTOTYPES in
                   configure.in and config.h.in.
2003/02/06: [spec] /[0-9-a]/ is allowed as usual char '-' and 'a' in Ruby.
                   add USE_BETTER_COMPATIBILITY_FOR_ORIGINAL_REGEX in
                   regint.h.   (thanks MoonWolf)
2003/02/06: [spec] rename REG_MBCTYPE_XXXX to REG_ENCODING_XXXX in onigposix.h.
2003/02/05: [spec] rename MBCTYPE_XXXX to REG_MBCTYPE_XXXX in onigposix.h.
2003/02/05: [spec] add POSIX API error REG_EONIG_THREAD to onigposix.h.
2003/02/05: [dist] add .cvsignore file.
2003/02/04: Version 1.7
2003/02/04: [bug]  typo miss in regex_region_copy().
2003/02/04: [impl] change THREAD_PASS macro. (regint.h)
2003/02/04: [dist] add API document file doc/API.
2003/02/04: [tune] if sub_anchor has ANCHOR_BEGIN_LINE then 
                   set REG_OPTIMIZE_EXACT_BM in set_optimize_exact_info().
2003/02/04: [spec] reimplement regex_clone() and it is obsoleted.
2003/02/04: [bug]  add REGERR_OVER_THREAD_PASS_LIMIT_COUNT
                   to regerror.c regposix.c.
2003/02/03: [bug]  Hankaku-Kana may be second byte in Shift_JIS
                   regex_is_allow_reverse_match().
2003/02/03: [impl] add optimization type REG_OPTIMIZE_EXACT_BM_NOT_REV.
                   remove exact_allow_reverse_match member in regex_t.
2003/02/03: [impl] add exact_allow_reverse_match member in regex_t.
2003/02/03: [impl] compile-search conflict in regex_search() is handled.
2003/02/01: [tune] decrease regex_region_clear() calling from regex_search().
2003/02/01: [tune] remove region argument from match_at().
2003/01/31: [tune] don't use strlen() in regexec() and regcomp().
2003/01/31: [tune] decrease regex_reduce_chain() calling in regex_search().
2003/01/31: [bug]  STRING_CMP() in regexec.c was wrong in ignore-case.
2003/01/31: [impl] convert to lower-case char at string compile time.
                   change SBTRANSCMP() in regexec.c.
2003/01/31: [impl] rename TTRANS() to TOLOWER().
2003/01/30: [bug]  .c.o --> .c.obj in win32\Makefile.
2003/01/30: [impl] add -DNOT_RUBY to Makefile.in.
                   NOT_RUBY is refered in regint.h for escape double
                   including config.h.
2003/01/30: [impl] when string hasn't case ambiguity, don't compile
                   to ignore case opcode.
2003/01/29: [impl] add SJIS, UTF-8 test_sb() test.
2003/01/29: [dist] add INSTALL-RUBY file.
2003/01/28: [test] success in Cygwin, Ruby 1.8.0 (2003-01-27).
2003/01/24: [inst] add rback target to Makefile.in.
2003/01/24: [impl] change SBCMP() -> IS_NEWLINE() in match_at().
2003/01/23: [impl] add encoding arg to scan_xxxx_number().
2003/01/23: [impl] rename WCInt to WCINT.
2003/01/22: [bug]  POSIX API regexec() was not thread safe.
                   remove region member from POSIX regex_t.
            [new]  add search time option REG_OPTION_POSIX_REGION.
                   (region argument is treated as regmatch_t[] type)
                   speed up regexec().
2003/01/22: [memo] start CVS entry in my box.
2003/01/21: Version 1.6
2003/01/21: [test] Mac OS X 10.1, Ruby 1.8.0 (2003-01-20)
2003/01/20: [impl] add UTF-8 check to test.rb.   (thanks UENO Katsuhiro)
2003/01/18: [impl] change REGION_NOTPOS to REG_REGION_NOTPOS in regex.h.
2003/01/17: [dist] add sample/simple.c.
2003/01/17: [inst] add configure option --with-rubydir.
2003/01/17: [bug]  bad implemeted POSIX API options.
                   default:     /./ not match "\n", anchor not match "\n"
                   REG_NEWLINE: /./ not match "\n", anchor match "\n"
2003/01/16: [impl] rewrite POSIX API regexec() for speed up.
2003/01/16: [impl] add region member to POSIX regex_t struct.
2003/01/16: [inst] rename library file from 'libregex.a' to 'libonig.a'.
2003/01/15: [dist] add testc.c to distribution file.
2003/01/15: [test] success in 'make rtest/ctest/ptest' on Windows 2000.
2003/01/15: [bug]  change '/' to \' in win32/Makefile.
2003/01/14: [test] success in Ruby make test on Windows 2000.
                   VC++6.0, Ruby 1.6.8 (2003-01-12)
2003/01/14: [inst] change Makefile.in and win32/Makefile.
2003/01/11: [inst] changes for Win32 platform. (regint.h, reggnu.c, regcomp.c)
2003/01/11: [dist] add win32 directory. (config.h, Makefile, testc.c)
2003/01/10: [inst] add onigposix.h to install target. (Makefile.in)
2003/01/10: [bug]  lacked a comma in ESTRING[]. (regposerr.c)
2003/01/10: [bug]  local variable name was wrong. buf -> tbuf (regerror())
2003/01/10: [spec] remove REG_RUBY_M17N case from onigposix.h and regposix.c.
2003/01/09: Version 1.5
2003/01/09: [inst] replace Ruby re.c.XXX.patch files. (166 -> 168, 172 -> 180)
2003/01/09: [new]  implement POSIX API.   (thanks knu)
                   (onigposix.h, regposix.c, regposerr.c)
2003/01/08: [spec] remove REGERR_END_PATTERN_AFTER_BACKSLASH in regex.h.
2003/01/08: [spec] region arg can be NULL in regex_search() and regex_match().
2003/01/08: Version 1.4
2003/01/08: [inst] add test program converter (test.rb -> testc.c).
2003/01/08: [bug]  move GET_WCINT() from regcomp.c to regint.h.
2003/01/07: [inst] add new test script (test.rb).
2002/12/30: [bug]  wrong merge in multibyte mode (alt_merge_opt_exact_info()).
2002/12/28: [inst] add rtest target to Makefile.in.
2002/12/28: [bug]  /\xfe/.match("\xfe") mismatch in multibyte mode.
                   add "raw" flag arg to concat_opt_exact_info_str().
2002/12/25: [bug]  check condition was wrong in alt_merge_opt_map_info().
2002/12/25: [impl] add threshold_len check in regex_search().
2002/12/23: [bug]  prec-read in alternative (/a|(?=z).f/.match("zf") => nil)
2002/12/23: [bug]  \G in alternative (/a|\Gz/.match("bza") => "z").
                   add start member in MatchArg. (regexec.c)
2002/12/21: [impl] **** rewrite all optimization process. ****
2002/12/16: [impl] remove node subtype EFFECT_EMPTY.
2002/12/12: [impl] reconstruct node types. (regcomp.c)
2002/12/11: [impl] add regerror.c
2002/12/10: [bug]  [ruby-dev:19042] (thanks Nobu)
                   anchor(\G etc...) influenced outside of "|". (/a|\Gb/)
2002/11/30: [bug]  [ruby-dev:18966] (thanks Nobu)
                   char-class(\S, [^\s] etc...) optimize map-info was wrong.
2002/11/29: [bug]  infinite loop on NULL-pointer str search (regex_search()).
                   (thanks matz)
2002/11/29: [bug]  change static -> extern (regex_chain_reduce()).
2002/11/29: [bug]  change encoding to RegDefaultCharEncoding
                   in re_recompile_pattern(). (adapt to re.c)
2002/04/24: [spec] USE_ONIGURUMA_EXTENSION is disabled in default.
2002/04/24: [new]  add searching time option: REG_OPTION_NOTBOL/NOTEOL.
                   add searching time option argument to regex_search() and
                   regex_match(). (prepare for POSIX API)
2002/04/20: [impl] divide regex.c file into regcomp.c, regexec.c, reggnu.c
                   and regint.h.
2002/04/09: [impl] move IS_MULTILINE() to outside of loop in OP_ANYCHAR_STAR.
2002/04/08: [impl] don't use OP_REPEAT operator for '??'.
2002/04/06: [impl] reduce redundant nested repeat operators(?,*,+,??,*?,+?).
                   ex. (?:a*)?, (?:a??)* etc..
2002/04/06: [spec] should not warn for /(?:a?)+?/.
2002/04/04: [spec] should allow fixed length alternative and repeat pattern
                   in look-behind. ex. /(?<=(a|b){3})/  (thanks Guy Decoux)
2002/04/02: [spec] should warn for /(?:a+)?/ and /(?:a*)??/.  (thanks akr)
2002/04/01: Version 1.3
2002/04/01: [dist] add COPYING.
2002/03/30: [spec] warn redundant nested repeat operator
                   in Ruby verbose mode.  ex. (?:a*)?
2002/03/30: [spec] nested repeat operator error check should be 
                   same with GNU regex.             (thanks Guy Decoux)
2002/03/30: [new]  add \x{hexadecimal-wide-char}.   (thanks matz)
2002/03/27: [bug]  MBCTYPE_XXX symbol values should be same with GNU regex.
2002/03/27: [impl] add THREAD_ATOMIC to regex_clone(), regex_init(), regex_end().
2002/03/25: [spec] if encoding is utf-8, allow combination of singlebyte and
                   multibyte code range in char class.
                   (cancelled 2002/04/01: for M17N compatibility)
2002/03/25: [dist] description of the license condition is added to README.
2002/03/23: [bug]  should set all bits of reg->mem_stats,
                   if REG_OPTION_FIND_LONGEST or REG_OPTION_NOT_EMPTY.
2002/03/23: [new]  add a new option REG_OPTION_NOT_EMPTY.
2002/03/20: [spec] allow incompleted left brace as an usual char.
                   ex. /{/, /({)/, /a{2,3/ etc...
2002/03/20: [impl] serialize integer in bytecode.
                   (switch by UNALIGNED_WORD_ACCESS in regex.c)
2002/03/20: [impl] change re_mbcinit() for REG_RUBY_M17N.
2002/03/19: [impl] word alignment of char class multi-byte code ranges.
2002/03/19: [impl] replace OP_EXACTMB4N with OP_EXACTMB3N.
2002/03/19: [bug]  OP_CCLASS_MB_NOT process in matchAt() is wrong.
2002/03/19: [new]  add re_mbctab[] for Ruby extension library compatibility.
2002/03/19: [spec] allow nested repeat operator, if operator is {n,m} type.
2002/03/19: [new]  add REG_IS_PATTERN_ERROR(ecode) in regex.h
2002/03/18: [spec] /[a-b-c]/ should be error.
2002/03/18: [bug]  /[\w-a]/ should be error.        (thanks Guy Decoux)
2002/03/18: [bug]  /[\]/ should be error.           (thanks Guy Decoux)
2002/03/18: [bug]  /()*/ etc.. should not be error. (thanks Guy Decoux)
2002/03/18: [spec] /a{1}*/ should not be error.     (thanks Guy Decoux)
2002/03/18: [bug]  ab{2}{3} was interpreded to (?:a(?:b{2})){3}
                   (thanks Guy Decoux)
2002/03/18: [bug]  abort /(?i)*a/ etc...            (thanks Guy Decoux)
2002/03/18: [bug]  abort /a|*/,/a|{1}/ etc...       (thanks Guy Decoux)
2002/03/13: Version 1.2
2002/03/13: [test] success in rubicon/builtin/AllBuiltinTests.rb.
                   (thanks rubicon)
2002/03/13: [bug]  OP_EXACTMBN process in matchAt() is wrong.
2002/03/13: [bug]  start argument of BackwardSearchRange() is wrong.
2002/03/12: [spec] change function name style from CamelCase
                   to underline_separation. (includes API)
2002/03/12: [bug]  if pattern has nested null-check, cause infinite loop.
                   correct STACK_NULL_CHECK() macro. (thanks Guy Decoux)
2002/03/11: [bug]  it is wrong that four numbers to continue as
                   an octal value in scanBackSlash(). ex. /\0111/
                   (thanks matz)
2002/03/11: [new]  \k (single-byte word char), \K (multi-byte char).
2002/03/09: [inst] add two targets to Makefile.in (166 and 172).
2002/03/09: [spec] decrease REG_MAX_BACKREF_NUM, REG_MAX_REPEAT_NUM
                   values.
2002/03/08: [spec] allow use of "\A"(begin-buf) in look-behind.
2002/03/08: [impl] add a new opcode OP_PUSH_IF_PEEK_NEXT.
2002/03/08: [impl] add a new opcode OP_ANYCHAR_STAR_PEEK_NEXT.
2002/03/07: [spec] prohibit use of capture group "(...)"
                   in negative look-behind.
2002/03/07: [inst] add configure.in, config.h.in, Makefile.in.
2002/03/07: [impl] call Init_REGEX_STAT() in RegexInit().
2002/03/07: [spec] less length string match with negative look-behind.
                   ex. /(?<!XXX)a/.match("Xa").    (thanks Nobu)
2002/03/06: [impl] expand repeated string, if expanded length <= 100.
                   ex. /(?:abc){10}/
2002/03/06: [new]  add a symbol REG_TRANSTABLE_USE_DEFAULT in regex.h.
2002/03/06: [impl] rename RegDefaultCharCode to RegDefaultCharEncoding.
2002/03/06: [bug]  if pattern has NULL(\000) char, infinite loop happens 
                   in ScanMakeNode(). (beware of strchr(). thanks Nobu)
2002/03/06: [bug]  range argument of ForwardSearchRange() is wrong.
                   ex. /\A.a/, /\G.a/ mismatched with "aa". (thanks Nobu)
2002/03/05: [new]  add RegexMatch() API. rename regexMatch() to matchAt().
2002/03/05: [impl] change function definition style.
2002/03/05: [impl] abolish use of macro symbol which name begin with underline.
2002/03/04: [bug]  make up a break-statement in compileTree().
                   (compile error on Mac OS X 10.1.3)
2002/03/04: Version 1.1
2002/03/04: [impl] replace STK_BOTTOM with STK_ALT.
2002/03/02: [impl] add new opcode OP_FINISH and new stack type
                   STK_BOTTOM for (little bit) speed up STACK_POP.
2002/03/02: [impl] add new opcode OP_EXACT1_IC, OP_EXACTN_IC
                   for compile time ignore case check.
                   remove opcode OP_EXACT1_RAW, OP_EXACTN_RAW.
2002/03/02: [impl] add OpTime info to statistical data.
2002/02/28: [bug]  sub_anchor($) in ForwardSearch() and BackwardSearch().
                   ex. /$\x0az/.match("\nz")
2002/02/28: [new]  look-behind (?<=pattern), (?<!pattern).
2002/02/27: [bug]  use StackIndex instead of StackType* for realloc problem.
2002/02/27: [impl] use m17n_codepoint() as mb2wc() in REG_RUBY_M17N.
2002/02/27: [spec] undefined POSIX bracket /[[:xyz:]]/ should be syntax error.
2002/02/26: [bug]  ex. /$*/, /[a-]/, /((?i)a)b/   (thanks matz)
2002/02/25: Version 1.0 (first release)
--
[bug:  bug fix]
[API:  API change/new/delete]
[new:  new feature]
[spec: specification change]
[impl: implementation change]
[tune: tune for speed up]
[inst: changes for installation]
[dist: distribution change]
[test: test]
[dev:  development]
[memo: memo]
--
<create tag>
svn copy file:///home/kosako/svnreps/svnrep_onig/trunk file:///home/kosako/svnreps/svnrep_onig/tags/5.0.0 -m "ADD TAG: 5.0.0"
<set ignore files by .cvsignore>
svn propset svn:ignore -F .cvsignore .
svn commit -m "..."
<CVS: show all tags>
cvs history -T
<CVS: add tag>
cvs rtag "VERSION_X_X_X" oniguruma
<GNU Autotools: bootstrap>
* write Makefile.am and configure.in.
> aclocal
> libtoolize   or   glibtoolize
> automake --foreign --add-missing
> autoconf
> configure --with-rubydir=... CFLAGS="-O2 -Wall"
<GNU libtool: version management>
  VERSION = current:revision:age
  current:  interface number (from 0)
  revision: implementation number of same interface (from 0)
  age:      number of supported previous interfaces
            (if current only supported then age == 0)
//END