extract scrolling logic out of insert_at_cursor

Dependencies

• [2] QKAMUWSB another bugfix in scrolling while inserting text
• [3] 5ZFHMYQI .
• [4] UFIUYYYV additional logging for an active bug
• [5] 73OCE2MC after much struggle, a brute-force undo
• [6] NZKYPBSK check for scroll when just typing
• [7] KOTI3MFG bugfix in previous commit
• [8] 2RXZ3PGO beginning of a new approach to scroll+wrap
• [9] 2ZYV7D3W handle tab characters
• [10] XNFTJHC4 split keyboard handling between Text and Drawing
• [11] WY3JD6W6 bugfix
• [12] SLLR6KKI bugfix for non-ASCII
• [13] VJ77YABH more efficient undo/redo
• [*] BULPIBEG beginnings of a module for the text editor
• [*] OTIBCAUJ love2d scaffold
• [*] LS55YKGW switch copy/paste to ctrl- hotkeys

Change contents

• edit in text.lua at line 147
  [5.1274]

  [5.1]
  + --? print(Screen_top1.line, Screen_top1.pos, Cursor1.line, Cursor1.pos, Screen_bottom1.line, Screen_bottom1.pos)
• edit in text.lua at line 149
  [5.28]

  [5.1275]
  + if Cursor_y >= App.screen.height - Line_height then

  + Text.populate_screen_line_starting_pos(Cursor1.line)

  + Text.snap_cursor_to_bottom_of_screen()

  + --? print('=>', Screen_top1.line, Screen_top1.pos, Cursor1.line, Cursor1.pos, Screen_bottom1.line, Screen_bottom1.pos)

  + end
• edit in text.lua at line 158
  [5.99]→[4.3:118](∅→∅)
  − --? print(Screen_top1.line, Screen_top1.pos, Cursor1.line, Cursor1.pos, Screen_bottom1.line, Screen_bottom1.pos)
• edit in text.lua at line 172
  [5.763]→[2.1149:1203](∅→∅),[2.1203]→[5.1584:1684](∅→∅),[5.1584]→[5.1584:1684](∅→∅),[5.1684]→[5.409:532](∅→∅),[5.532]→[5.1684:1690](∅→∅),[5.1684]→[5.1684:1690](∅→∅)
  − if Cursor_y >= App.screen.height - Line_height then

  − Text.populate_screen_line_starting_pos(Cursor1.line)

  − Text.snap_cursor_to_bottom_of_screen()

  − --? print('=>', Screen_top1.line, Screen_top1.pos, Cursor1.line, Cursor1.pos, Screen_bottom1.line, Screen_bottom1.pos)

  − end
• edit in text.lua at line 189
  [5.1547]

  [5.163]
  + --? print(Screen_top1.line, Screen_top1.pos, Cursor1.line, Cursor1.pos, Screen_bottom1.line, Screen_bottom1.pos)
• edit in text.lua at line 191
  [5.195]

  [5.972]
  + if Cursor_y >= App.screen.height - Line_height then

  + Text.populate_screen_line_starting_pos(Cursor1.line)

  + Text.snap_cursor_to_bottom_of_screen()

  + --? print('=>', Screen_top1.line, Screen_top1.pos, Cursor1.line, Cursor1.pos, Screen_bottom1.line, Screen_bottom1.pos)

  + end
• edit in main.lua at line 428
  [17.802]

  [3.8]
  + --? print(Screen_top1.line, Screen_top1.pos, Cursor1.line, Cursor1.pos, Screen_bottom1.line, Screen_bottom1.pos)
• edit in main.lua at line 430
  [3.41]

  [17.849]
  + if Cursor_y >= App.screen.height - Line_height then

  + Text.populate_screen_line_starting_pos(Cursor1.line)

  + Text.snap_cursor_to_bottom_of_screen()

  + --? print('=>', Screen_top1.line, Screen_top1.pos, Cursor1.line, Cursor1.pos, Screen_bottom1.line, Screen_bottom1.pos)

  + end