rename a couple of variables

Dependencies

• [2] LAW2O3NW extract variable Margin_left
• [3] DAENUOGV eliminate assumptions that line length == size in bytes
• [4] 76AIXR7H bugfix
• [5] BULPIBEG beginnings of a module for the text editor
• [6] DFSDPDO7 bugfix
• [7] JCUTYA6O keep repeated cursor up/down motions from drifting left
• [8] ULKLJBN6 couple of renames
• [9] HYEAFRZ2 split mouse_pressed events between Text and Drawing
• [10] 5Q6NIG66 bugfix

Change contents

• replacement in text.lua at line 752
  [3.745]→[3.445:476](∅→∅)
  − local left, right = 1, len+1
  [3.643]

  [3.1484]
  + local leftpos, rightpos = 1, len+1
• replacement in text.lua at line 755
  [3.35]→[3.1514:1615](∅→∅)
  − --? print('nearest', x, '^'..line..'$', left, right)

  − if left == right then

  − return left
  [3.35]

  [3.1615]
  + --? print('nearest', x, '^'..line..'$', leftpos, rightpos)

  + if leftpos == rightpos then

  + return leftpos
• replacement in text.lua at line 759
  [3.35]→[3.870:914](∅→∅),[3.1623]→[3.870:914](∅→∅),[3.870]→[3.870:914](∅→∅)
  − local curr = math.floor((left+right)/2)
  [3.1623]

  [2.2435]
  + local curr = math.floor((leftpos+rightpos)/2)
• replacement in text.lua at line 762
  [3.213]→[3.1624:1691](∅→∅),[2.2541]→[3.1624:1691](∅→∅),[3.1010]→[3.1624:1691](∅→∅)
  − --? print('nearest', x, left, right, curr, currxmin, currxmax)
  [2.2541]

  [3.1010]
  + --? print('nearest', x, leftpos, rightpos, curr, currxmin, currxmax)
• replacement in text.lua at line 770
  [3.1079]→[3.93:140](∅→∅)
  − if left >= right-1 then

  − return right
  [3.1079]

  [3.140]
  + if leftpos >= rightpos-1 then

  + return rightpos
• replacement in text.lua at line 774
  [3.1104]→[3.1104:1123](∅→∅)
  − right = curr
  [3.1104]

  [3.1123]
  + rightpos = curr
• replacement in text.lua at line 776
  [3.1132]→[3.1132:1150](∅→∅)
  − left = curr
  [3.1132]

  [3.1150]
  + leftpos = curr