error when rapidly deleting and undoing

[dvdsk]

prosesitter.nvim/lua/prosesitter/on_event/marks/marks.lua:55: end_col value outside range

[dvdsk]

undo in general is problematic its seems

[dvdsk]

to reproduce:

example:

// misspelled
// longmisspelled
//
fn main() {
}

• set check scheduling to 3 seconds
• wait till extmarks/hl are set
• delete and undo and delete longmisspelled within 3s
• wait 3s

this will give error:

[FATAL zo 05 sep 2021 14:58:50 CEST] ...rosesitter.nvim/lua/prosesitter/on_event/marks/marks.lua:20: could not place extmark
buf_id: 1
row: 1
col_start: 3
col_end: 16
[FATAL zo 05 sep 2021 14:58:50 CEST] ...rosesitter.nvim/lua/prosesitter/on_event/marks/marks.lua:55: mask_id: col value outside range
[FATAL zo 05 sep 2021 14:58:50 CEST] ...rosesitter.nvim/lua/prosesitter/on_event/marks/marks.lua:56: mark: { 1, 0, {
    end_col = 0,
    end_row = 1
  } }
[FATAL zo 05 sep 2021 14:58:50 CEST] ...rosesitter.nvim/lua/prosesitter/on_event/marks/marks.lua:57: hl: {
  buf_id = 1,
  end_col = 17,
  group = "SpellBad",
  hover_txt = "Did you really mean 'longmisspeled'?",
  row_id = 3,
  start_col = 5
}

[dvdsk]

Analysis:
placeholder extmark gets created
text on it is send for checking
line with placeholder extmark gets deleted
results from checking come back and get row via placeholder extmark
row has content of smaller length, hl extmark can not be placed

[dvdsk]

Implemented:

• on line deletion remove any placeholder extmark leave any hl-extmarks alone. However any changes done before the delete will not be checked after undo.

Non-Solutions:

• wrap highlighting in pcal; this will only fix the case the line width changes
• add hash and only hl if hash of checked text matches current text; this will block any highlights appearing while editing a line

[dvdsk]

TODO hook into undo event to schedule a check