akkartik/bf.love - Change ZS5IYZH5EXXPSVIFWS7XW5POEVRRCK6XV6PB36D3EJXJRT22LKOQC

stop caching screen_bottom1

I'm not sure this is very useful. I had an initial idea to stop using screen_bottom1 in final_text_loc_on_screen, by starting from screen_top1 rather than screen_bottom1. But that changes the direction in which we scan for the text line in situations where there is somehow no text on screen (something that should never happen but I have zero confidence in that).

Still, it doesn't seem like a bad thing to drastically reduce the lifetime of some derived state.

Really what I need to do is throw this whole UX out and allow the cursor to be on a drawing as a whole. So up arrow or left arrow below a drawing would focus the whole drawing in a red border, and another up arrow and left arrow would skip the drawing and continue upward. I think that change to the UX will eliminate a whole class of special cases in the code.

Created by akkartik on June 11, 2024

ZS5IYZH5EXXPSVIFWS7XW5POEVRRCK6XV6PB36D3EJXJRT22LKOQC

Dependencies

In channels

main

Change contents

Deletion in text_tests.lua at line 78 [16.2]
B:BD[15.2689] → [15.2689:2724]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 257 [16.2]
B:BD[15.7365] → [15.7365:7400]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 275 [16.2]
B:BD[17.399] → [17.399:434]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 294 [16.2]
B:BD[18.654] → [18.654:689]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 312 [16.2]
B:BD[15.7905] → [15.7905:7940]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 330 [16.2]
B:BD[19.584] → [19.584:619]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 347 [16.2]
B:BD[15.8346] → [15.8346:8381]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 363 [16.2]
B:BD[15.8720] → [15.8720:8755]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 379 [16.2]
B:BD[15.9093] → [15.9093:9128]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 396 [16.2]
B:BD[18.1649] → [18.1649:1684]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 414 [16.2]
B:BD[18.2721] → [18.2721:2756]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 431 [16.2]
B:BD[15.9468] → [15.9468:9503]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 448 [16.2]
B:BD[15.9882] → [15.9882:9917]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 466 [16.2]
B:BD[15.10251] → [15.10251:10286]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 488 [16.2]
B:BD[15.10796] → [15.10796:10831]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 508 [16.2]
B:BD[15.11383] → [15.11383:11418]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 531 [16.2]
B:BD[15.11969] → [15.11969:12004]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 555 [16.2]
B:BD[15.12559] → [15.12559:12594]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 573 [16.2]
B:BD[15.12983] → [15.12983:13018]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 595 [16.2]
B:BD[15.13593] → [15.13593:13628]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 612 [16.2]
B:BD[15.14098] → [15.14098:14133]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 628 [16.2]
B:BD[15.14473] → [15.14473:14508]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 649 [16.2]
B:BD[15.14960] → [15.14960:14995]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 666 [16.2]
B:BD[15.15334] → [15.15334:15369]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 683 [16.2]
B:BD[15.15701] → [15.15701:15736]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 701 [16.2]
B:BD[15.16058] → [15.16058:16093]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 724 [16.2]
B:BD[15.16656] → [15.16656:16691]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 742 [16.2]
B:BD[15.17099] → [15.17099:17134]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 770 [16.2]
B:BD[15.17865] → [15.17865:17900]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 786 [16.2]
B:BD[15.18583] → [15.18583:18618]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 814 [16.2]
B:BD[15.20131] → [15.20131:20166]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 833 [16.2]
B:BD[20.431] → [20.431:466]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 850 [16.2]
B:BD[21.390] → [21.390:425]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 872 [16.2]
B:BD[22.685] → [22.685:720]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 892 [16.2]
B:BD[15.21059] → [15.21059:21094]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 916 [16.2]
B:BD[15.22201] → [15.22201:22236]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 945 [16.2]
B:BD[23.322] → [23.322:357]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 966 [16.2]
B:BD[15.23657] → [15.23657:23692]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 981 [16.2]
B:BD[15.24028] → [15.24028:24063]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1010 [16.2]
B:BD[15.24767] → [15.24767:24802]
```
  Editor_state.screen_bottom1 = {}
```

Deletion in text_tests.lua at line 1023 [16.2]

∅:D[24.7987] → [16.8517:8522]

B:BD[16.8517] → [16.8517:8522]

B:BD[16.8522] → [25.2:62]

B:BD[25.127] → [25.127:183]

∅:D[25.183] → [16.8691:8730]

B:BD[16.8691] → [16.8691:8730]

B:BD[16.8730] → [26.2399:2445]

∅:D[26.2445] → [15.25155:25218]

∅:D[27.7869] → [15.25155:25218]

B:BD[16.8730] → [15.25155:25218]

B:BD[15.25218] → [28.2552:2584]

∅:D[28.2584] → [15.25304:25425]

B:BD[15.25304] → [15.25304:25425]

B:BD[15.25425] → [29.1563:1589]

B:BD[29.1589] → [27.7870:7899]

B:BD[27.7899] → [24.7988:8038]

∅:D[24.8038] → [15.25463:25498]

B:BD[25.287] → [15.25463:25498]

B:BD[15.25498] → [24.8039:8090]

∅:D[24.8090] → [15.25499:25534]

B:BD[25.392] → [15.25499:25534]

B:BD[15.25534] → [24.8091:8142]

∅:D[24.8142] → [25.497:581]

B:BD[25.497] → [25.497:581]

B:BD[25.581] → [12.1837:1901]

∅:D[12.1901] → [24.8143:8379]

B:BD[30.3864] → [24.8143:8379]

∅:D[24.8379] → [27.7900:7923]

B:BD[15.25983] → [27.7900:7923]

B:BD[27.7923] → [24.8380:8422]

∅:D[24.8422] → [15.26014:26049]

B:BD[25.1074] → [15.26014:26049]

B:BD[15.26049] → [24.8423:8465]

∅:D[24.8465] → [15.26050:26085]

B:BD[25.1170] → [15.26050:26085]

B:BD[15.26085] → [24.8466:8507]

end
function test_pagedown_often_shows_start_of_wrapping_line()
  -- draw a few lines ending in part of a wrapping line
  App.screen.init{width=50, height=60}
  Editor_state = edit.initialize_test_state()
  Editor_state.lines = load_array{'abc', 'def ghi jkl', 'mno'}
  Text.redraw_all(Editor_state)
  Editor_state.cursor1 = {line=1, pos=1}
  Editor_state.screen_top1 = {line=1, pos=1}
  Editor_state.screen_bottom1 = {}
  edit.draw(Editor_state)
  local y = Editor_state.top
  App.screen.check(y, 'abc', 'baseline/screen:1')
  y = y + Editor_state.line_height
  App.screen.check(y, 'def ', 'baseline/screen:2')
  y = y + Editor_state.line_height
  App.screen.check(y, 'ghi ', 'baseline/screen:3')
  -- after pagedown we start drawing from the bottom _line_ (multiple screen lines)
  edit.run_after_keychord(Editor_state, 'pagedown', 'pagedown')
  check_eq(Editor_state.screen_top1.line, 2, 'screen_top:line')
  check_eq(Editor_state.screen_top1.pos, 1, 'screen_top:pos')
  check_eq(Editor_state.cursor1.line, 2, 'cursor:line')
  check_eq(Editor_state.cursor1.pos, 1, 'cursor:pos')
  y = Editor_state.top
  App.screen.check(y, 'def ', 'screen:1')
  y = y + Editor_state.line_height
  App.screen.check(y, 'ghi ', 'screen:2')
  y = y + Editor_state.line_height
  App.screen.check(y, 'jkl', 'screen:3')

Deletion in text_tests.lua at line 1033 [16.2]
B:BD[15.26414] → [15.26414:26449]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1067 [16.2]
B:BD[31.408] → [31.408:443]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1081 [16.2]
B:BD[15.27146] → [15.27146:27181]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1113 [16.2]
B:BD[32.535] → [32.535:570]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1134 [16.2]
B:BD[15.27805] → [15.27805:27840]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1161 [16.2]
B:BD[15.28555] → [15.28555:28590]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1189 [16.2]
B:BD[15.29429] → [15.29429:29464]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1216 [16.2]
B:BD[15.30387] → [15.30387:30422]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1249 [16.2]
B:BD[15.31646] → [15.31646:31681]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1280 [16.2]
B:BD[32.1630] → [32.1630:1665]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1301 [16.2]
B:BD[15.32301] → [15.32301:32336]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1328 [16.2]
B:BD[33.423] → [33.423:458]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1349 [16.2]
B:BD[15.33043] → [15.33043:33078]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1376 [16.2]
B:BD[15.33977] → [15.33977:34012]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1405 [16.2]
B:BD[15.34891] → [15.34891:34926]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1431 [16.2]
B:BD[15.35562] → [15.35562:35597]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1455 [16.2]
B:BD[15.36182] → [15.36182:36217]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1483 [16.2]
B:BD[15.37115] → [15.37115:37150]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1509 [16.2]
B:BD[15.37947] → [15.37947:37982]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1537 [16.2]
B:BD[15.38791] → [15.38791:38826]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1559 [16.2]
B:BD[15.39591] → [15.39591:39626]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1577 [16.2]
B:BD[15.40368] → [15.40368:40403]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1606 [16.2]
B:BD[15.41178] → [15.41178:41213]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1634 [16.2]
B:BD[15.42109] → [15.42109:42144]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1663 [16.2]
B:BD[15.42979] → [15.42979:43014]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1691 [16.2]
B:BD[15.43886] → [15.43886:43921]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1721 [16.2]
B:BD[15.44713] → [15.44713:44748]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1754 [16.2]
B:BD[15.45576] → [15.45576:45611]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1781 [16.2]
B:BD[15.46302] → [15.46302:46337]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1915 [16.2]
B:BD[15.51142] → [15.51142:51177]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1949 [16.2]
B:BD[15.52318] → [15.52318:52353]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 1987 [16.2]
B:BD[15.53705] → [15.53705:53740]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 2007 [16.2]
B:BD[34.320] → [34.320:355]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 2033 [16.2]
B:BD[35.318] → [35.318:353]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 2050 [16.2]
B:BD[36.309] → [36.309:344]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in text_tests.lua at line 2067 [16.2]
B:BD[37.329] → [37.329:364]
```
  Editor_state.screen_bottom1 = {}
```

Replacement in text.lua at line 5 [39.1]

B:BD[38.91] → [6.3:83]

-- return y for the next line, and position of start of final screen line drawn

[38.91]

[38.163]

-- return y for the next line

Deletion in text.lua at line 13 [39.1]

B:BD[40.1768] → [41.85:161]

  local final_screen_line_starting_pos = startpos  -- track value to return

Deletion in text.lua at line 20 [39.1]
B:BD[42.138] → [41.320:363]
```
      final_screen_line_starting_pos = pos
```
Replacement in text.lua at line 60 [39.1]
B:BD[43.37] → [6.84:127]
```
  return y, final_screen_line_starting_pos
```
[43.37]
[41.1206]
```
  return y
```

Replacement in text.lua at line 135 [39.1]

∅:D[44.1073] → [45.84:235]

B:BD[45.84] → [45.84:235]

--?   print(State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos, State.screen_bottom1.line, State.screen_bottom1.pos)

[44.1073]

[46.3]

--?   print(State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos)

Replacement in text.lua at line 168 [39.1]

∅:D[44.1369] → [47.498:651]

B:BD[47.498] → [47.498:651]

--?     print(State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos, State.screen_bottom1.line, State.screen_bottom1.pos)

[44.1369]

[46.470]

--?     print(State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos)

Replacement in text.lua at line 173 [39.1]

∅:D[48.321] → [47.953:1114]

∅:D[27.15513] → [47.953:1114]

B:BD[47.953] → [47.953:1114]

--?       print('=>', State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos, State.screen_bottom1.line, State.screen_bottom1.pos)

[27.15513]

[49.806]

--?       print('=>', State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos)

Replacement in text.lua at line 354 [39.1]

∅:D[50.434] → [51.3:25]

∅:D[52.1145] → [51.3:25]

∅:D[46.2605] → [51.3:25]

B:BD[53.74] → [51.3:25]

--?   print('pageup')

[50.434]

[53.74]

  State.screen_top1 = Text.previous_screen_top1(State)
  State.cursor1 = {line=State.screen_top1.line, pos=State.screen_top1.pos}
  Text.move_cursor_down_to_next_text_line_while_scrolling_again_if_necessary(State)
  Text.redraw_all(State)  -- if we're scrolling, reclaim all fragments to avoid memory leaks
end
function Text.previous_screen_top1(State)

Replacement in text.lua at line 362 [39.1]
B:BD[53.115] → [50.435:485]
∅:D[54.139] → [53.152:183]
∅:D[50.485] → [53.152:183]
∅:D[48.749] → [53.152:183]
∅:D[46.2662] → [53.152:183]
∅:D[15.66327] → [53.152:183]
B:BD[53.152] → [53.152:183]
```
  local top2 = Text.to2(State, State.screen_top1)
--?   print(App.screen.height)
```
[53.115]
[46.2663]
```
  -- does not modify State (except to populate line_cache)
  local loc2 = Text.to2(State, State.screen_top1)
```

Replacement in text.lua at line 366 [39.1]

∅:D[46.2746] → [51.26:89]

∅:D[27.16711] → [51.26:89]

∅:D[15.66425] → [51.26:89]

B:BD[55.1366] → [51.26:89]

B:BD[51.89] → [46.2747:2891]

--?     print(y, top2.line, top2.screen_line, top2.screen_pos)
    if State.screen_top1.line == 1 and State.screen_top1.pos == 1 then break end
    if State.lines[State.screen_top1.line].mode == 'text' then

[27.16711]

[46.2891]

    if loc2.line == 1 and loc2.screen_line == 1 and loc2.screen_pos == 1 then break end
    if State.lines[loc2.line].mode == 'text' then

Replacement in text.lua at line 369 [39.1]

B:BD[46.2923] → [46.2923:2993]

B:BD[46.2993] → [56.82:188]

    elseif State.lines[State.screen_top1.line].mode == 'drawing' then
      y = y - Drawing_padding_height - Drawing.pixels(State.lines[State.screen_top1.line].h, State.width)

[46.2923]

[53.555]

    elseif State.lines[loc2.line].mode == 'drawing' then
      y = y - Drawing_padding_height - Drawing.pixels(State.lines[loc2.line].h, State.width)

Replacement in text.lua at line 372 [39.1]

B:BD[53.563] → [50.486:536]

    top2 = Text.previous_screen_line(State, top2)

[53.563]

[57.77]

    loc2 = Text.previous_screen_line(State, loc2)

Replacement in text.lua at line 374 [39.1]

B:BD[57.83] → [48.814:858]

B:BD[48.858] → [58.175:250]

∅:D[58.250] → [50.537:621]

B:BD[46.3220] → [50.537:621]

∅:D[50.621] → [46.3221:3319]

∅:D[48.956] → [46.3221:3319]

B:BD[59.93] → [46.3221:3319]

∅:D[46.3319] → [51.90:116]

∅:D[15.67131] → [51.90:116]

B:BD[53.857] → [51.90:116]

  State.screen_top1 = Text.to1(State, top2)
  State.cursor1 = {line=State.screen_top1.line, pos=State.screen_top1.pos}
  Text.move_cursor_down_to_next_text_line_while_scrolling_again_if_necessary(State)
--?   print(State.cursor1.line, State.cursor1.pos, State.screen_top1.line, State.screen_top1.pos)
--?   print('pageup end')

[57.83]

  return Text.to1(State, loc2)

Replacement in text.lua at line 378 [39.1]
∅:D[50.652] → [51.117:141]
∅:D[52.1182] → [51.117:141]
∅:D[46.3363] → [51.117:141]
B:BD[53.883] → [51.117:141]
∅:D[60.65] → [25.2828:2991]
∅:D[51.141] → [25.2828:2991]
B:BD[53.883] → [25.2828:2991]
B:BD[25.2991] → [3.3:143]
∅:D[3.143] → [25.3118:3124]
B:BD[25.3118] → [25.3118:3124]
B:BD[25.3124] → [3.144:185]
∅:D[3.185] → [46.3424:3505]
∅:D[48.1065] → [46.3424:3505]
B:BD[25.3158] → [46.3424:3505]
∅:D[46.3505] → [25.3227:3234]
∅:D[15.67294] → [25.3227:3234]
B:BD[25.3227] → [25.3227:3234]
B:BD[25.3234] → [58.251:338]
∅:D[58.338] → [25.3318:3324]
∅:D[46.3614] → [25.3318:3324]
∅:D[15.67431] → [25.3318:3324]
B:BD[25.3318] → [25.3318:3324]
B:BD[25.3324] → [46.3615:3692]
```
--?   print('pagedown')
  -- If a line/paragraph gets to a page boundary, I often want to scroll
  -- before I get to the bottom.
  -- However, only do this if it makes forward progress.
  local bot2 = Text.to2(State, State.screen_bottom1)
  if bot2.screen_line > 1 then
    bot2.screen_line = math.max(bot2.screen_line-10, 1)
  end
  local new_top1 = Text.to1(State, bot2)
  if Text.lt1(State.screen_top1, new_top1) then
    State.screen_top1 = new_top1
  else
    State.screen_top1 = {line=State.screen_bottom1.line, pos=State.screen_bottom1.pos}
  end
--?   print('setting top to', State.screen_top1.line, State.screen_top1.pos)
```
[50.652]
[58.339]
```
  State.screen_top1 = Text.screen_bottom1(State)
```
Deletion in text.lua at line 381 [39.1]
∅:D[50.791] → [46.3783:3830]
∅:D[48.1163] → [46.3783:3830]
B:BD[59.184] → [46.3783:3830]
```
--?   print('top now', State.screen_top1.line)
```

Replacement in text.lua at line 382 [39.1]

∅:D[48.1257] → [51.142:170]

B:BD[61.184] → [51.142:170]

--?   print('pagedown end')

[48.1257]

[53.1214]

end
-- return the location of the start of the bottom-most line on screen
function Text.screen_bottom1(State)
  -- duplicate some logic from love.draw
  -- does not modify State (except to populate line_cache)
  local loc2 = Text.to2(State, State.screen_top1)
  local y = State.top
  while true do
    if State.lines[loc2.line].mode == 'text' then
      y = y + State.line_height
    elseif State.lines[loc2.line].mode == 'drawing' then
      y = y + Drawing_padding_height + Drawing.pixels(State.lines[loc2.line].h, State.width)
    end
    if y + State.line_height > App.screen.height then break end
    local next_loc2 = Text.next_screen_line(State, loc2)
    if Text.eq2(next_loc2, loc2) then break end
    loc2 = next_loc2
  end
  return Text.to1(State, loc2)

Replacement in text.lua at line 449 [39.1]

∅:D[11.1152] → [46.5973:6132]

B:BD[46.5973] → [46.5973:6132]

--?   print('down', State.cursor1.line, State.cursor1.pos, State.screen_top1.line, State.screen_top1.pos, State.screen_bottom1.line, State.screen_bottom1.pos)

[11.1152]

[11.1153]

--?   print('down', State.cursor1.line, State.cursor1.pos, State.screen_top1.line, State.screen_top1.pos)

Replacement in text.lua at line 466 [39.1]

B:BD[62.1321] → [46.6478:6537]

    if State.cursor1.line > State.screen_bottom1.line then

[62.1321]

[46.6537]

    local screen_bottom1 = Text.screen_bottom1(State)
--?   print('down 2', State.cursor1.line, State.cursor1.pos, State.screen_top1.line, State.screen_top1.pos, screen_bottom1.line, screen_bottom1.pos)
    if State.cursor1.line > screen_bottom1.line then

Replacement in text.lua at line 476 [39.1]

B:BD[57.3744] → [2.3:73]

    local scroll_down = Text.le1(State.screen_bottom1, State.cursor1)

[57.3744]

[57.3929]

    local screen_bottom1 = Text.screen_bottom1(State)
    local scroll_down = Text.le1(screen_bottom1, State.cursor1)

Replacement in text.lua at line 493 [39.1]

B:BD[57.4810] → [46.7379:7536]

--?   print('=>', State.cursor1.line, State.cursor1.pos, State.screen_top1.line, State.screen_top1.pos, State.screen_bottom1.line, State.screen_bottom1.pos)

[57.4810]

[63.6091]

--?   print('=>', State.cursor1.line, State.cursor1.pos, State.screen_top1.line, State.screen_top1.pos)

Replacement in text.lua at line 645 [39.1]

B:BD[13.137] → [13.137:201]

  if State.lines[State.screen_bottom1.line].mode == 'text' then

[13.137]

[13.201]

  local screen_bottom1 = Text.screen_bottom1(State)
  if State.lines[screen_bottom1.line].mode == 'text' then

Replacement in text.lua at line 648 [39.1]

B:BD[13.214] → [13.214:323]

      line=State.screen_bottom1.line,
      pos=Text.pos_at_end_of_screen_line(State, State.screen_bottom1),

[13.214]

[13.323]

      line=screen_bottom1.line,
      pos=Text.pos_at_end_of_screen_line(State, screen_bottom1),

Replacement in text.lua at line 652 [39.1]

B:BD[13.335] → [13.335:388]

  local loc2 = Text.to2(State, State.screen_bottom1)

[13.335]

[13.388]

  local loc2 = Text.to2(State, screen_bottom1)

Replacement in text.lua at line 703 [39.1]

B:BD[64.580] → [4.3:162]

--?   print('snap', State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos, State.screen_bottom1.line, State.screen_bottom1.pos)

[64.580]

[48.3087]

--?   print('snap', State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos)

Replacement in text.lua at line 733 [39.1]

B:BD[48.3781] → [58.1263:1425]

--?   print('snap =>', State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos, State.screen_bottom1.line, State.screen_bottom1.pos)

[48.3781]

--?   print('snap =>', State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos)

Insertion in text.lua at line 938 [39.1]

[65.880]

function Text.eq2(a, b)
  return a.line == b.line and a.screen_line == b.screen_line and a.screen_pos == b.screen_pos
end

Insertion in text.lua at line 962 [39.1]

[66.1229]

[67.3987]

  end
end
function Text.next_screen_line(State, loc2)
  if State.lines[loc2.line].mode == 'drawing' then
    return {line=loc2.line+1, screen_line=1, screen_pos=1}
  end
  Text.populate_screen_line_starting_pos(State, loc2.line)
  if loc2.screen_line >= #State.line_cache[loc2.line].screen_line_starting_pos then
    if loc2.line < #State.lines then
      return {line=loc2.line+1, screen_line=1, screen_pos=1}
    else
      return loc2
    end
  else
    return {line=loc2.line, screen_line=loc2.screen_line+1, screen_pos=1}

Insertion in text.lua at line 1004 [39.1]
[68.720]
[48.5408]
```
  local screen_bottom1 = Text.screen_bottom1(State)
```
Replacement in text.lua at line 1007 [39.1]
B:BD[48.5538] → [48.5538:5600]
∅:D[48.5600] → [68.870:895]
∅:D[15.78211] → [68.870:895]
B:BD[68.870] → [68.870:895]
```
  elseif State.cursor1.line >= State.screen_bottom1.line then
--?     print('too low')
```
[48.5538]
[69.135]
```
  elseif State.cursor1.line >= screen_bottom1.line then
```
Replacement in text.lua at line 1009 [39.1]
∅:D[70.136] → [68.956:981]
∅:D[69.180] → [68.956:981]
∅:D[71.864] → [68.956:981]
∅:D[48.5651] → [68.956:981]
B:BD[68.956] → [68.956:981]
B:BD[48.5710] → [48.5710:5776]
B:BD[48.5776] → [18.3494:3599]
∅:D[72.155] → [73.139:147]
∅:D[74.209] → [73.139:147]
∅:D[18.3599] → [73.139:147]
∅:D[50.3873] → [73.139:147]
∅:D[48.5878] → [73.139:147]
B:BD[73.139] → [73.139:147]
```
--?       print('tweak')
      State.cursor1 = {
          line=State.screen_bottom1.line,
          pos=Text.to_pos_on_line(State, State.screen_bottom1.line, State.right-5, App.screen.height-5),
      }
```
[69.180]
[68.1142]
```
      State.cursor1 = Text.final_text_loc_on_screen(State)
```
Deletion in text.lua at line 1018 [39.1]
∅:D[69.255] → [70.300:419]
∅:D[71.978] → [70.300:419]
∅:D[15.78444] → [70.300:419]
B:BD[70.300] → [70.300:419]
B:BD[70.419] → [75.600:676]
∅:D[76.363] → [71.1062:1177]
∅:D[75.676] → [71.1062:1177]
∅:D[50.3944] → [71.1062:1177]
B:BD[71.1062] → [71.1062:1177]
```
  -- 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_screen_line(State, State.cursor1)
--?   local botline1 = {line=State.cursor1.line, pos=botpos}
--?   return Text.lt1(State.screen_bottom1, botline1)
```
Deletion in source_text_tests.lua at line 78 [77.3498]
B:BD[77.5731] → [77.5731:5766]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 257 [77.3498]
B:BD[77.13611] → [77.13611:13646]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 275 [77.3498]
B:BD[77.14289] → [77.14289:14324]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 294 [77.3498]
B:BD[77.15194] → [77.15194:15229]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 312 [77.3498]
B:BD[77.16004] → [77.16004:16039]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 330 [77.3498]
B:BD[19.1568] → [19.1568:1603]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 347 [77.3498]
B:BD[77.16610] → [77.16610:16645]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 363 [77.3498]
B:BD[77.17290] → [77.17290:17325]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 379 [77.3498]
B:BD[77.18005] → [77.18005:18040]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 396 [77.3498]
B:BD[77.18818] → [77.18818:18853]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 414 [77.3498]
B:BD[77.19754] → [77.19754:19789]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 431 [77.3498]
B:BD[77.20627] → [77.20627:20662]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 448 [77.3498]
B:BD[77.21499] → [77.21499:21534]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 466 [77.3498]
B:BD[77.22355] → [77.22355:22390]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 488 [77.3498]
B:BD[77.23540] → [77.23540:23575]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 508 [77.3498]
B:BD[77.24634] → [77.24634:24669]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 531 [77.3498]
B:BD[77.25923] → [77.25923:25958]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 555 [77.3498]
B:BD[77.27362] → [77.27362:27397]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 573 [77.3498]
B:BD[78.1072] → [78.1072:1107]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 595 [77.3498]
B:BD[78.2158] → [78.2158:2193]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 612 [77.3498]
B:BD[78.2984] → [78.2984:3019]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 628 [77.3498]
B:BD[78.3703] → [78.3703:3738]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 649 [77.3498]
B:BD[78.4686] → [78.4686:4721]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 666 [77.3498]
B:BD[78.5422] → [78.5422:5457]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 683 [77.3498]
B:BD[78.6132] → [78.6132:6167]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 701 [77.3498]
B:BD[78.6896] → [78.6896:6931]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 724 [77.3498]
B:BD[77.28188] → [77.28188:28223]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 742 [77.3498]
B:BD[77.28979] → [77.28979:29014]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 770 [77.3498]
B:BD[77.30368] → [77.30368:30403]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 786 [77.3498]
B:BD[77.31273] → [77.31273:31308]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 814 [77.3498]
B:BD[78.8370] → [78.8370:8405]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 833 [77.3498]
B:BD[79.443] → [79.443:478]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 850 [77.3498]
B:BD[79.1297] → [79.1297:1332]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 872 [77.3498]
B:BD[79.2356] → [79.2356:2391]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 892 [77.3498]
B:BD[78.9538] → [78.9538:9573]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 916 [77.3498]
B:BD[78.11039] → [78.11039:11074]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 945 [77.3498]
B:BD[79.3260] → [79.3260:3295]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 966 [77.3498]
B:BD[78.12935] → [78.12935:12970]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 981 [77.3498]
B:BD[77.33452] → [77.33452:33487]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1010 [77.3498]
B:BD[58.4339] → [58.4339:4374]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1033 [77.3498]
B:BD[77.34711] → [77.34711:34746]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1067 [77.3498]
B:BD[77.36391] → [77.36391:36426]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1081 [77.3498]
B:BD[77.37082] → [77.37082:37117]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1113 [77.3498]
B:BD[32.2792] → [32.2792:2827]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1134 [77.3498]
B:BD[77.38627] → [77.38627:38662]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1161 [77.3498]
B:BD[77.40226] → [77.40226:40261]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1189 [77.3498]
B:BD[77.42096] → [77.42096:42131]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1216 [77.3498]
B:BD[77.44076] → [77.44076:44111]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1249 [77.3498]
B:BD[77.46483] → [77.46483:46518]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1280 [77.3498]
B:BD[32.3887] → [32.3887:3922]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1301 [77.3498]
B:BD[77.47931] → [77.47931:47966]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1328 [77.3498]
B:BD[33.1979] → [33.1979:2014]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1349 [77.3498]
B:BD[77.49476] → [77.49476:49511]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1376 [77.3498]
B:BD[77.51160] → [77.51160:51195]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1405 [77.3498]
B:BD[77.53016] → [77.53016:53051]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1431 [77.3498]
B:BD[77.54361] → [77.54361:54396]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1455 [77.3498]
B:BD[77.55543] → [77.55543:55578]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1483 [77.3498]
B:BD[77.57279] → [77.57279:57314]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1509 [77.3498]
B:BD[77.58905] → [77.58905:58940]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1537 [77.3498]
B:BD[77.60582] → [77.60582:60617]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1559 [77.3498]
B:BD[77.62060] → [77.62060:62095]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1577 [77.3498]
B:BD[77.63241] → [77.63241:63276]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1606 [77.3498]
B:BD[77.64967] → [77.64967:65002]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1634 [77.3498]
B:BD[77.66697] → [77.66697:66732]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1663 [77.3498]
B:BD[77.68507] → [77.68507:68542]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1691 [77.3498]
B:BD[77.70157] → [77.70157:70192]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1721 [77.3498]
B:BD[77.71928] → [77.71928:71963]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1754 [77.3498]
B:BD[77.74041] → [77.74041:74076]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1781 [77.3498]
B:BD[77.75523] → [77.75523:75558]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1915 [77.3498]
B:BD[77.77613] → [77.77613:77648]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1949 [77.3498]
B:BD[77.79101] → [77.79101:79136]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 1987 [77.3498]
B:BD[78.20140] → [78.20140:20175]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 2007 [77.3498]
B:BD[77.80608] → [77.80608:80643]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 2033 [77.3498]
B:BD[77.81780] → [77.81780:81815]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 2050 [77.3498]
B:BD[77.82514] → [77.82514:82549]
```
  Editor_state.screen_bottom1 = {}
```
Deletion in source_text_tests.lua at line 2067 [77.3498]
B:BD[77.83248] → [77.83248:83283]
```
  Editor_state.screen_bottom1 = {}
```

Replacement in source_text.lua at line 5 [77.83723]

B:BD[77.83964] → [80.48:128]

-- return y for the next line, and position of start of final screen line drawn

[77.83964]

[10.8]

-- return y for the next line

Deletion in source_text.lua at line 12 [77.83723]

B:BD[81.165] → [80.129:205]

  local final_screen_line_starting_pos = startpos  -- track value to return

Deletion in source_text.lua at line 26 [77.83723]
B:BD[77.87768] → [80.413:456]
```
      final_screen_line_starting_pos = pos
```
Replacement in source_text.lua at line 85 [77.83723]
B:BD[77.89103] → [80.1942:1985]
```
  return y, final_screen_line_starting_pos
```
[77.89103]
[80.1985]
```
  return y
```

Replacement in source_text.lua at line 209 [77.83723]

B:BD[77.97303] → [77.97303:97454]

--?   print(State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos, State.screen_bottom1.line, State.screen_bottom1.pos)

[77.97303]

[77.97454]

--?   print(State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos)

Replacement in source_text.lua at line 242 [77.83723]

B:BD[77.99353] → [77.99353:99506]

--?     print(State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos, State.screen_bottom1.line, State.screen_bottom1.pos)

[77.99353]

[77.99506]

--?     print(State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos)

Replacement in source_text.lua at line 247 [77.83723]

B:BD[77.99759] → [77.99759:99920]

--?       print('=>', State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos, State.screen_bottom1.line, State.screen_bottom1.pos)

[77.99759]

[77.99920]

--?       print('=>', State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos)

Replacement in source_text.lua at line 428 [77.83723]

B:BD[77.107499] → [77.107499:107521]

--?   print('pageup')

[77.107499]

[77.107521]

  State.screen_top1 = Text.previous_screen_top1(State)
  State.cursor1 = {line=State.screen_top1.line, pos=State.screen_top1.pos}
  Text.move_cursor_down_to_next_text_line_while_scrolling_again_if_necessary(State)
  Text.redraw_all(State)  -- if we're scrolling, reclaim all fragments to avoid memory leaks
end
function Text.previous_screen_top1(State)

Replacement in source_text.lua at line 436 [77.83723]

B:BD[77.107562] → [77.107562:107643]

  local top2 = Text.to2(State, State.screen_top1)
--?   print(App.screen.height)

[77.107562]

[77.107643]

  -- does not modify State (except to populate line_cache)
  local loc2 = Text.to2(State, State.screen_top1)

Replacement in source_text.lua at line 440 [77.83723]

B:BD[77.107719] → [77.107719:107782]

B:BD[77.107782] → [81.2339:2420]

∅:D[81.2420] → [58.6490:6553]

B:BD[77.107889] → [58.6490:6553]

--?     print(y, top2.line, top2.screen_line, top2.screen_pos)
    if State.screen_top1.line == 1 and State.screen_top1.pos == 1 then break end
    if State.lines[State.screen_top1.line].mode == 'text' then

[77.107719]

[58.6553]

    if loc2.line == 1 and loc2.screen_line == 1 and loc2.screen_pos == 1 then break end
    if State.lines[loc2.line].mode == 'text' then

Replacement in source_text.lua at line 443 [77.83723]

B:BD[58.6585] → [58.6585:6761]

    elseif State.lines[State.screen_top1.line].mode == 'drawing' then
      y = y - Drawing_padding_height - Drawing.pixels(State.lines[State.screen_top1.line].h, State.width)

[58.6585]

[58.6761]

    elseif State.lines[loc2.line].mode == 'drawing' then
      y = y - Drawing_padding_height - Drawing.pixels(State.lines[loc2.line].h, State.width)

Replacement in source_text.lua at line 446 [77.83723]
∅:D[58.6769] → [77.107919:107969]
B:BD[77.107919] → [77.107919:107969]
```
    top2 = Text.previous_screen_line(State, top2)
```
[58.6769]
[77.107969]
```
    loc2 = Text.previous_screen_line(State, loc2)
```

Replacement in source_text.lua at line 448 [77.83723]

B:BD[77.107975] → [77.107975:108019]

B:BD[77.108019] → [81.2421:2496]

∅:D[81.2496] → [77.108123:108331]

B:BD[77.108123] → [77.108123:108331]

  State.screen_top1 = Text.to1(State, top2)
  State.cursor1 = {line=State.screen_top1.line, pos=State.screen_top1.pos}
  Text.move_cursor_down_to_next_text_line_while_scrolling_again_if_necessary(State)
--?   print(State.cursor1.line, State.cursor1.pos, State.screen_top1.line, State.screen_top1.pos)
--?   print('pageup end')

[77.107975]

[77.108331]

  return Text.to1(State, loc2)

Replacement in source_text.lua at line 452 [77.83723]

B:BD[77.108366] → [77.108366:108390]

B:BD[77.108390] → [7.75:160]

∅:D[7.160] → [77.108665:108742]

B:BD[77.108665] → [77.108665:108742]

--?   print('pagedown')
  State.screen_top1 = {line=State.screen_bottom1.line, pos=State.screen_bottom1.pos}
--?   print('setting top to', State.screen_top1.line, State.screen_top1.pos)

[77.108366]

[81.2843]

  State.screen_top1 = Text.screen_bottom1(State)

Deletion in source_text.lua at line 455 [77.83723]
B:BD[77.108930] → [77.108930:108977]
```
--?   print('top now', State.screen_top1.line)
```

Replacement in source_text.lua at line 456 [77.83723]

B:BD[77.109070] → [77.109070:109098]

--?   print('pagedown end')

[77.109070]

[77.109098]

end
-- return the location of the start of the bottom-most line on screen
function Text.screen_bottom1(State)
  -- duplicate some logic from love.draw
  -- does not modify State (except to populate line_cache)
  local loc2 = Text.to2(State, State.screen_top1)
  local y = State.top
  while true do
    if State.lines[loc2.line].mode == 'text' then
      y = y + State.line_height
    elseif State.lines[loc2.line].mode == 'drawing' then
      y = y + Drawing_padding_height + Drawing.pixels(State.lines[loc2.line].h, State.width)
    end
    if y + State.line_height > App.screen.height then break end
    local next_loc2 = Text.next_screen_line(State, loc2)
    if Text.eq2(next_loc2, loc2) then break end
    loc2 = next_loc2
  end
  return Text.to1(State, loc2)

Replacement in source_text.lua at line 523 [77.83723]

∅:D[11.3470] → [77.114836:114995]

∅:D[58.8977] → [77.114836:114995]

B:BD[77.114836] → [77.114836:114995]

--?   print('down', State.cursor1.line, State.cursor1.pos, State.screen_top1.line, State.screen_top1.pos, State.screen_bottom1.line, State.screen_bottom1.pos)

[11.3470]

[11.3471]

--?   print('down', State.cursor1.line, State.cursor1.pos, State.screen_top1.line, State.screen_top1.pos)

Replacement in source_text.lua at line 540 [77.83723]

B:BD[77.115410] → [77.115410:115469]

    if State.cursor1.line > State.screen_bottom1.line then

[77.115410]

[77.115469]

    local screen_bottom1 = Text.screen_bottom1(State)
--?   print('down 2', State.cursor1.line, State.cursor1.pos, State.screen_top1.line, State.screen_top1.pos, screen_bottom1.line, screen_bottom1.pos)
    if State.cursor1.line > screen_bottom1.line then

Replacement in source_text.lua at line 550 [77.83723]

∅:D[81.2975] → [77.115833:115903]

B:BD[77.115833] → [77.115833:115903]

    local scroll_down = Text.le1(State.screen_bottom1, State.cursor1)

[81.2975]

[77.115903]

    local screen_bottom1 = Text.screen_bottom1(State)
    local scroll_down = Text.le1(screen_bottom1, State.cursor1)

Replacement in source_text.lua at line 567 [77.83723]

B:BD[77.118181] → [77.118181:118338]

--?   print('=>', State.cursor1.line, State.cursor1.pos, State.screen_top1.line, State.screen_top1.pos, State.screen_bottom1.line, State.screen_bottom1.pos)

[77.118181]

[77.118338]

--?   print('=>', State.cursor1.line, State.cursor1.pos, State.screen_top1.line, State.screen_top1.pos)

Replacement in source_text.lua at line 719 [77.83723]

B:BD[14.145] → [14.145:209]

  if State.lines[State.screen_bottom1.line].mode == 'text' then

[14.145]

[14.209]

  local screen_bottom1 = Text.screen_bottom1(State)
  if State.lines[screen_bottom1.line].mode == 'text' then

Replacement in source_text.lua at line 722 [77.83723]

B:BD[14.222] → [14.222:331]

      line=State.screen_bottom1.line,
      pos=Text.pos_at_end_of_screen_line(State, State.screen_bottom1),

[14.222]

[14.331]

      line=screen_bottom1.line,
      pos=Text.pos_at_end_of_screen_line(State, screen_bottom1),

Replacement in source_text.lua at line 726 [77.83723]

B:BD[14.343] → [14.343:396]

  local loc2 = Text.to2(State, State.screen_bottom1)

[14.343]

[14.396]

  local loc2 = Text.to2(State, screen_bottom1)

Replacement in source_text.lua at line 777 [77.83723]

B:BD[81.3661] → [4.167:326]

--?   print('snap', State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos, State.screen_bottom1.line, State.screen_bottom1.pos)

[81.3661]

[77.127567]

--?   print('snap', State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos)

Replacement in source_text.lua at line 807 [77.83723]

B:BD[77.128343] → [81.3918:4080]

--?   print('snap =>', State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos, State.screen_bottom1.line, State.screen_bottom1.pos)

[77.128343]

[77.128576]

--?   print('snap =>', State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos)

Insertion in source_text.lua at line 1012 [77.83723]

[77.142104]

[77.142169]

function Text.eq2(a, b)
  return a.line == b.line and a.screen_line == b.screen_line and a.screen_pos == b.screen_pos
end

Insertion in source_text.lua at line 1036 [77.83723]

[81.5854]

[77.144205]

  end
end
function Text.next_screen_line(State, loc2)
  if State.lines[loc2.line].mode == 'drawing' then
    return {line=loc2.line+1, screen_line=1, screen_pos=1}
  end
  Text.populate_screen_line_starting_pos(State, loc2.line)
  if loc2.screen_line >= #State.line_cache[loc2.line].screen_line_starting_pos then
    if loc2.line < #State.lines then
      return {line=loc2.line+1, screen_line=1, screen_pos=1}
    else
      return loc2
    end
  else
    return {line=loc2.line, screen_line=loc2.screen_line+1, screen_pos=1}

Insertion in source_text.lua at line 1078 [77.83723]
[77.145510]
[77.145510]
```
  local screen_bottom1 = Text.screen_bottom1(State)
```

Replacement in source_text.lua at line 1081 [77.83723]

B:BD[77.145640] → [77.145640:145702]

  elseif State.cursor1.line >= State.screen_bottom1.line then

[77.145640]

[77.145702]

  elseif State.cursor1.line >= screen_bottom1.line then

Replacement in source_text.lua at line 1086 [77.83723]

B:BD[81.5879] → [81.5879:6026]

          line=State.screen_bottom1.line,
          pos=Text.to_pos_on_line(State, State.screen_bottom1.line, State.right-5, App.screen.height-5),

[81.5879]

[81.6026]

          line=screen_bottom1.line,
          pos=Text.to_pos_on_line(State, screen_bottom1.line, State.right-5, App.screen.height-5),

Deletion in source_text.lua at line 1097 [77.83723]

B:BD[77.146140] → [77.146140:146450]

  -- 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_screen_line(State, State.cursor1)
--?   local botline1 = {line=State.cursor1.line, pos=botpos}
--?   return Text.lt1(State.screen_bottom1, botline1)

Replacement in source_select.lua at line 82 [78.23288]

B:BD[78.27134] → [79.4417:4513]

  return State.screen_bottom1.line, Text.pos_at_end_of_screen_line(State, State.screen_bottom1)

[78.27134]

  local screen_bottom1 = Text.screen_bottom1(State)
  return screen_bottom1.line, Text.pos_at_end_of_screen_line(State, screen_bottom1)

Deletion in source_edit.lua at line 75 [77.152440]
∅:D[14.946] → [81.6314:6409]
B:BD[81.6314] → [81.6314:6409]
```
    screen_bottom1 = {line=1, pos=1},  -- position of start of screen line at bottom of screen
```
Deletion in source_edit.lua at line 169 [77.152440]
B:BD[77.155762] → [79.4516:4561]
```
  local screen_bottom1 = {line=nil, pos=nil}
```
Deletion in source_edit.lua at line 174 [77.152440]
B:BD[77.155992] → [79.4562:4599]
```
    screen_bottom1.line = line_index
```

Replacement in source_edit.lua at line 201 [77.152440]

B:BD[77.156342] → [10.649:753]

      y, screen_bottom1.pos = Text.draw(State, line_index, y, startpos, hide_cursor, show_line_numbers)

[77.156342]

[58.21245]

      y = Text.draw(State, line_index, y, startpos, hide_cursor, show_line_numbers)

Deletion in source_edit.lua at line 211 [77.152440]
B:BD[77.156525] → [79.4686:4726]
```
  State.screen_bottom1 = screen_bottom1
```

Replacement in source_edit.lua at line 364 [77.152440]

∅:D[5.32] → [82.227:310]

B:BD[82.227] → [82.227:310]

    State.cursor1 = {line=State.screen_bottom1.line, pos=State.screen_bottom1.pos}

[5.32]

[9.58]

    State.cursor1 = Text.screen_bottom1(State)

Replacement in select.lua at line 82 [16.43980]

B:BD[16.46495] → [22.1840:1936]

  return State.screen_bottom1.line, Text.pos_at_end_of_screen_line(State, State.screen_bottom1)

[16.46495]

[83.5]

  local screen_bottom1 = Text.screen_bottom1(State)
  return screen_bottom1.line, Text.pos_at_end_of_screen_line(State, screen_bottom1)

Replacement in search.lua at line 65 [16.48846]

B:BD[16.50515] → [84.730:832]

  if Text.lt1(State.cursor1, State.screen_top1) or Text.lt1(State.screen_bottom1, State.cursor1) then

[16.50515]

[84.832]

  local screen_bottom1 = Text.screen_bottom1(State)
  if Text.lt1(State.cursor1, State.screen_top1) or Text.lt1(screen_bottom1, State.cursor1) then

Replacement in search.lua at line 119 [16.48846]

B:BD[16.51555] → [84.1775:1877]

  if Text.lt1(State.cursor1, State.screen_top1) or Text.lt1(State.screen_bottom1, State.cursor1) then

[16.51555]

[84.1877]

  local screen_bottom1 = Text.screen_bottom1(State)
  if Text.lt1(State.cursor1, State.screen_top1) or Text.lt1(screen_bottom1, State.cursor1) then

Deletion in edit.lua at line 73 [85.413]
∅:D[13.934] → [15.96626:96721]
B:BD[15.96626] → [15.96626:96721]
```
    screen_bottom1 = {line=1, pos=1},  -- position of start of screen line at bottom of screen
```
Deletion in edit.lua at line 168 [85.413]
B:BD[27.22445] → [22.1951:1996]
```
  local screen_bottom1 = {line=nil, pos=nil}
```
Deletion in edit.lua at line 173 [85.413]
B:BD[29.3095] → [22.1997:2034]
```
    screen_bottom1.line = line_index
```

Replacement in edit.lua at line 196 [85.413]

B:BD[85.5239] → [22.2035:2107]

      y, screen_bottom1.pos = Text.draw(State, line_index, y, startpos)

[85.5239]

[86.1039]

      y = Text.draw(State, line_index, y, startpos)

Deletion in edit.lua at line 206 [85.413]
B:BD[85.5923] → [22.2108:2148]
```
  State.screen_bottom1 = screen_bottom1
```

Replacement in edit.lua at line 360 [85.413]

∅:D[5.182] → [82.2080:2163]

B:BD[82.2080] → [82.2080:2163]

    State.cursor1 = {line=State.screen_bottom1.line, pos=State.screen_bottom1.pos}

[5.182]

[9.167]

    State.cursor1 = Text.screen_bottom1(State)

Insertion in app.lua at line 133 [87.2]

[8.842]

--?   App.initialize_for_test() -- debug: run a single test at a time like these 2 lines
--?   test_pagedown_skips_drawings()

Replacement in app.lua at line 409 [87.2]

B:BD[24.60904] → [41.2268:2330]

  local stack_trace = debug.traceback('', --[[stack frame]]5)

[24.60904]

[24.60966]

  local stack_trace = debug.traceback('', --[[stack frame]]5)  -- most likely to be useful, but set to 0 for a complete stack trace

Insertion in app.lua at line 412 [87.2]
[24.61148]
[88.2058]
```
  -- uncomment this line for a complete stack trace
```

stop caching screen_bottom1

Dependencies

In channels

Change contents

Deletion in text_tests.lua at line 78 [16.2]

Deletion in text_tests.lua at line 257 [16.2]

Deletion in text_tests.lua at line 275 [16.2]

Deletion in text_tests.lua at line 294 [16.2]

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Deletion in text_tests.lua at line 363 [16.2]

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Deletion in text_tests.lua at line 628 [16.2]

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Deletion in text_tests.lua at line 786 [16.2]

Deletion in text_tests.lua at line 814 [16.2]

Deletion in text_tests.lua at line 833 [16.2]

Deletion in text_tests.lua at line 850 [16.2]

Deletion in text_tests.lua at line 872 [16.2]

Deletion in text_tests.lua at line 892 [16.2]

Deletion in text_tests.lua at line 916 [16.2]

Deletion in text_tests.lua at line 945 [16.2]

Deletion in text_tests.lua at line 966 [16.2]

Deletion in text_tests.lua at line 981 [16.2]

Deletion in text_tests.lua at line 1010 [16.2]

Deletion in text_tests.lua at line 1023 [16.2]

Deletion in text_tests.lua at line 1033 [16.2]

Deletion in text_tests.lua at line 1067 [16.2]

Deletion in text_tests.lua at line 1081 [16.2]

Deletion in text_tests.lua at line 1113 [16.2]

Deletion in text_tests.lua at line 1134 [16.2]

Deletion in text_tests.lua at line 1161 [16.2]

Deletion in text_tests.lua at line 1189 [16.2]

Deletion in text_tests.lua at line 1216 [16.2]

Deletion in text_tests.lua at line 1249 [16.2]

Deletion in text_tests.lua at line 1280 [16.2]

Deletion in text_tests.lua at line 1301 [16.2]

Deletion in text_tests.lua at line 1328 [16.2]

Deletion in text_tests.lua at line 1349 [16.2]

Deletion in text_tests.lua at line 1376 [16.2]

Deletion in text_tests.lua at line 1405 [16.2]

Deletion in text_tests.lua at line 1431 [16.2]

Deletion in text_tests.lua at line 1455 [16.2]

Deletion in text_tests.lua at line 1483 [16.2]

Deletion in text_tests.lua at line 1509 [16.2]

Deletion in text_tests.lua at line 1537 [16.2]

Deletion in text_tests.lua at line 1559 [16.2]

Deletion in text_tests.lua at line 1577 [16.2]

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Deletion in text_tests.lua at line 1634 [16.2]

Deletion in text_tests.lua at line 1663 [16.2]

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