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We currently check $COLORTERM in the TUI process to determine if the terminal supports 24 bit color (truecolor). If $COLORTERM is "truecolor" or "24bit" then we automatically assume that the terminal supports truecolor, but if $COLORTERM is set to any other value we still query the terminal. The `rgb` flag of the UI struct is a boolean which only indicates whether the UI supports truecolor, but does not have a 3rd state that we can use to represent "we don't know if the UI supports truecolor". We currently use `rgb=false` to represent this "we don't know" state, and we use XTGETTCAP and DECRQSS queries to determine at runtime if the terminal supports truecolor. However, if $COLORTERM is set to a value besides "truecolor" or "24bit" (e.g. "256" or "16) that is a clear indication that the terminal _does not_ support truecolor, so it is incorrect to treat `rgb=false` as "we don't know" in that case. Instead, in the TUI process we only check for the terminfo capabilities. This must be done in the TUI process because we do not have access to this information in the core Neovim process when `_defaults.lua` runs. If the TUI cannot determine truecolor support from terminfo alone, we set `rgb=false` to indicate "we don't know if the terminal supports truecolor yet, keep checking". When we get to `_defaults.lua`, we can then check $COLORTERM and only query the terminal if it is unset. This means that users can explicitly opt out of truecolor determination by setting `COLORTERM=256` (or similar) in their environment. |
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| .. | ||
| autoload | ||
| colors | ||
| compiler | ||
| doc | ||
| ftplugin | ||
| indent | ||
| keymap | ||
| lua | ||
| macros | ||
| pack/dist/opt | ||
| plugin | ||
| queries | ||
| spell | ||
| syntax | ||
| tools | ||
| tutor | ||
| CMakeLists.txt | ||
| delmenu.vim | ||
| filetype.lua | ||
| ftoff.vim | ||
| ftplugin.vim | ||
| ftplugof.vim | ||
| indent.vim | ||
| indoff.vim | ||
| macmap.vim | ||
| makemenu.vim | ||
| menu.vim | ||
| mswin.vim | ||
| neovim.ico | ||
| nvim.appdata.xml | ||
| nvim.desktop | ||
| nvim.png | ||
| optwin.vim | ||
| synmenu.vim | ||
