diff options
author | Kartik K. Agaram <vc@akkartik.com> | 2023-11-24 19:19:29 -0800 |
---|---|---|
committer | Kartik K. Agaram <vc@akkartik.com> | 2023-11-24 19:19:29 -0800 |
commit | c1f7f17f9caa70ffc4857f64db59ff41741b0caf (patch) | |
tree | 74442818914d8bbac67fce7df0dafe44b6827d88 /text.lua | |
parent | 0751b389321cde6db5528704fc3613910f30ccbb (diff) | |
download | text.love-c1f7f17f9caa70ffc4857f64db59ff41741b0caf.tar.gz |
bugfix: infinite loop inside a very narrow window
I'm not sure this can trigger everywhere (I've only been able to exercise it in Lua Carousel), but it seems like a safety net worth having against future modifications by anybody.
Diffstat (limited to 'text.lua')
-rw-r--r-- | text.lua | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/text.lua b/text.lua index db51ac4..2383137 100644 --- a/text.lua +++ b/text.lua @@ -103,7 +103,9 @@ function Text.populate_screen_line_starting_pos(State, line_index) -- long word; chop it at some letter -- We're not going to reimplement TeX here. local bpos = Text.nearest_pos_less_than(frag, State.width - x) - -- everything works if bpos == 0, but is a little inefficient + if x == 0 and bpos == 0 then + assert(false, ("Infinite loop while line-wrapping. Editor is %dpx wide; window is %dpx wide"):format(State.width, App.screen.width)) + end pos = pos + bpos local boffset = Text.offset(frag, bpos+1) -- byte _after_ bpos frag = string.sub(frag, boffset) |