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Set correct background on existing GitGutter* highlight groups

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Previously if the user or the colourscheme had already defined
GitGutter* highlight groups, the plugin would leave their backgrounds
alone.  This pushed the responsibility for figuring out and specifying
the correct backgrounds onto the user or colourscheme maintainer.

With this change the plugin now sets the correct background on existing
GitGutter* highlight groups.

Also, the documentation was simplified so it is clearer how to set your
own colours for the signs.
This commit is contained in:
Andy Stewart
2020-04-25 11:17:34 +01:00
parent 6b46098b2a
commit 8db2fc5da0
3 changed files with 22 additions and 30 deletions
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9
autoload/gitgutter/highlight.vim
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@@ -84,6 +84,15 @@ function! gitgutter#highlight#define_highlights() abort
highlight default link GitGutterChangeDeleteInvisible GitGutterChangeInvisible
" When they are visible.
" If GitGutter* highlights are already defined, either by the user or the colourscheme,
" set their backgrounds to the sign column's.
for type in ["Add", "Change", "Delete"]
if hlexists("GitGutter".type)
execute "highlight GitGutter".type." guibg=".guibg." ctermbg=".ctermbg
endif
endfor
" By default use Diff* foreground colors with SignColumn's background.
for type in ['Add', 'Change', 'Delete']
let [guifg, ctermfg] = s:get_foreground_colors('Diff'.type)