standardize on ordering of cases

Dependencies

• [2] 7OUJM7DL one missing transition between shape modes
• [3] 2MA33THZ few more transitions between shapes
• [4] YCDYGEZU include drawing index in a few places
• [5] WTDKUACN rectangle and square shapes
• [6] XNFTJHC4 split keyboard handling between Text and Drawing
• [*] BLWAYPKV extract a module

Change contents

• replacement in drawing.lua at line 369
  [4.6467]→[2.10:98](∅→∅)
  − elseif drawing.pending.mode == 'square' or drawing.pending.mode == 'rectangle' then
  [4.6467]

  [2.98]
  + elseif drawing.pending.mode == 'rectangle' or drawing.pending.mode == 'square' then
• edit in drawing.lua at line 386
  [4.7020]

  [4.7020]
  + elseif drawing.pending.mode == 'polygon' or drawing.pending.mode == 'square' then

  + -- reuse existing (1-2) vertices
• edit in drawing.lua at line 390
  [4.7160]→[3.11:136](∅→∅)
  − elseif drawing.pending.mode == 'polygon' or drawing.pending.mode == 'square' then

  − -- reuse existing (1-2) vertices
• edit in drawing.lua at line 403
  [4.7814]→[4.7814:7954](∅→∅),[4.7954]→[3.137:228](∅→∅)
  − elseif drawing.pending.mode == 'circle' or drawing.pending.mode == 'arc' then

  − drawing.pending.vertices = {drawing.pending.center}

  − elseif drawing.pending.mode == 'rectangle' then

  − -- reuse existing (1-2) vertices
• edit in drawing.lua at line 407
  [3.380]

  [4.7954]
  + elseif drawing.pending.mode == 'rectangle' then

  + -- reuse existing (1-2) vertices

  + elseif drawing.pending.mode == 'circle' or drawing.pending.mode == 'arc' then

  + drawing.pending.vertices = {drawing.pending.center}
• edit in drawing.lua at line 452
  [4.8509]→[4.8509:8641](∅→∅)
  − elseif drawing.pending.mode == 'circle' or drawing.pending.mode == 'arc' then

  − drawing.pending.p1 = drawing.pending.center
• edit in drawing.lua at line 454
  [4.8746]

  [4.8746]
  + elseif drawing.pending.mode == 'circle' or drawing.pending.mode == 'arc' then

  + drawing.pending.p1 = drawing.pending.center