streamline the interface for Text.draw

Dependencies

• [2] I64IPGJX avoid saving fragments in lines
• [3] B3IWYWSR delete another arg that can be deduced
• [4] XNFTJHC4 split keyboard handling between Text and Drawing
• [5] EWMPYCDO bugfix
• [6] 4VKEE43Z bugfix
• [7] 73OCE2MC after much struggle, a brute-force undo
• [8] LF7BWEG4 group all editor globals
• [9] 3ZSUBI57 drop some redundant args from Text.draw
• [10] Z4XRNDTR find text
• [11] 2RXZ3PGO beginning of a new approach to scroll+wrap
• [12] CVGE3SIG I feel confident now that page-down is working.
• [13] 3TFEAQSW start using some globals
• [14] 2L5MEZV3 experiment: new edit namespace
• [15] BW2IUB3K keep all text cache writes inside text.lua
• [16] Y36LOGR5 bugfix: show cursor when past end of line
• [17] X3F7ECSL add state arg to some functions
• [18] KURLAXXI clean up some prints
• [19] LNUHQOGH start passing in Editor_state explicitly
• [20] H2DPLWMV snapshot: wrapping long lines at word boundaries
• [21] WJBZZQE4 fold together two largely similar cases
• [22] BULPIBEG beginnings of a module for the text editor

Change contents

• replacement in text.lua at line 5
  [3.91]→[3.91:163](∅→∅)
  − -- return the final y, and position of start of final screen line drawn
  [3.91]

  [3.163]
  + -- return y for the next line, and position of start of final screen line drawn
• replacement in text.lua at line 53
  [3.37]→[2.1143:1206](∅→∅)
  − return y - State.line_height, final_screen_line_starting_pos
  [3.37]

  [2.1206]
  + return y, final_screen_line_starting_pos
• edit in edit.lua at line 186
  [3.419]→[3.3585:3617](∅→∅),[3.1038]→[3.3585:3617](∅→∅),[3.3585]→[3.3585:3617](∅→∅)
  − y = y + State.line_height