bugfix: avoid scrolling on 'end'

Dependencies

• [2] VC2CU2GG faster paste
• [3] HTWAM4NZ bugfix: scrolling in left/right movements
• [4] WOXIYUTL bugfix: manage screen_top and cursor when resizing
• [5] LS55YKGW switch copy/paste to ctrl- hotkeys
• [6] SVJZZDC3 snapshot - no, that's all wrong
• [7] KECEMMMR extract couple of functions
• [8] ZPUQSPQP extract a few methods
• [9] HOSPP2AN crisp font rendering
• [10] CBPV5SSI stop handling nil screen_line_starting_pos everywhere
• [11] MDXGMZU2 disable all debug prints
• [12] ESETRNLB bugfix: printing the first part of a line at the bottom made it seem non-wrapping
• [*] BULPIBEG beginnings of a module for the text editor
• [*] OTIBCAUJ love2d scaffold

Change contents

• replacement in text.lua at line 512
  [3.6455]→[3.6455:6500](∅→∅)
  − if Text.lt1(Screen_bottom1, botline1) then
  [3.6455]

  [3.6500]
  + if Text.cursor_past_screen_bottom() then
• replacement in text.lua at line 578
  [5.1327]→[3.6713:6870](∅→∅)
  − local _,botpos = Text.pos_at_start_of_cursor_screen_line()

  − local botline1 = {line=Cursor1.line, pos=botpos}

  − if Text.lt1(Screen_bottom1, botline1) then
  [5.1327]

  [3.6870]
  + if Text.cursor_past_screen_bottom() then
• replacement in text.lua at line 942
  [4.895]→[4.895:956](∅→∅)
  − App.draw()

  − if Text.lt1(Screen_bottom1, Cursor1) then
  [4.895]

  [4.956]
  + if Text.cursor_past_screen_bottom() then
• edit in text.lua at line 948
  [4.1156]

  [4.1156]
  + end

  +

  + -- slightly expensive since it redraws the screen

  + function Text.cursor_past_screen_bottom()

  + App.draw()

  + return Cursor_y >= App.screen.height - Line_height

  + -- this approach is cheaper and almost works, except on the final screen

  + -- where file ends above bottom of screen

  + --? local _,botpos = Text.pos_at_start_of_cursor_screen_line()

  + --? local botline1 = {line=Cursor1.line, pos=botpos}

  + --? return Text.lt1(Screen_bottom1, botline1)
• replacement in main.lua at line 520
  [2.134]→[2.134:205](∅→∅)
  − App.draw()

  − if Cursor_y >= App.screen.height - Line_height then
  [2.134]

  [2.264]
  + if Text.cursor_past_screen_bottom() then