repl

Dependencies

• [2] R5QXEHUI somebody stop me

Change contents

• edit in mu.lua at line 4
  [2.64]

  [2.64]
  + curses.echo(false) -- unclear why implicit echo can't handle newlines, regardless of stdscr:nl()
• replacement in mu.lua at line 6
  [2.79]→[2.79:94](∅→∅)
  − stdscr:getch()
  [2.79]

  [2.94]
  + stdscr:scrollok(true)

  +

  + -- unclear how Lua (post 5.2) is able to selectively print values of variables

  + -- at the repl

  +

  + local function gather_results(success, ...)

  + local n = select('#', ...)

  + return success, { n = n, ... }

  + end

  +

  + local function readline()

  + local result = ''

  + while true do

  + local x = stdscr:getch()

  + stdscr:addch(x)

  + local c = string.char(x)

  + result = result .. c

  + if c == '\n' then break end

  + end

  + return result

  + end

  +

  + local new_expr = true

  + local buf = ''

  + while true do

  + if new_expr then

  + stdscr:addstr('> ')

  + else

  + stdscr:addstr('>> ')

  + end

  + buf = buf .. readline()

  + local f, err = load(buf, 'REPL')

  + if f then

  + buf = ''

  + new_expr = true

  + local success, results = gather_results(xpcall(f, function(...) return debug.traceback() end))

  + if success then

  + for _, result in ipairs(results) do

  + print(result)

  + end

  + else

  + print(results[1])

  + end

  + else

  + stdscr:addstr(err..'\n')

  + if string.match(err, "'<eof>'$") or string.match(err, "<eof>$") then

  + buf = buf .. '\n'

  + new_expr = false

  + else

  + print(err)

  + buf = ''

  + new_expr = true

  + end

  + end

  + end

  +