Updated plugins

sources_non_forked/vim-gitgutter/autoload/gitgutter/diff.vim

@@ -182,7 +182,7 @@ function! gitgutter#diff#handler(bufnr, diff) abort
   let modified_lines = gitgutter#diff#process_hunks(a:bufnr, gitgutter#hunk#hunks(a:bufnr))
 
   let signs_count = len(modified_lines)
-  if signs_count > g:gitgutter_max_signs
+  if g:gitgutter_max_signs != -1 && signs_count > g:gitgutter_max_signs
     call gitgutter#utility#warn_once(a:bufnr, printf(
           \ 'exceeded maximum number of signs (%d > %d, configured by g:gitgutter_max_signs).',
           \ signs_count, g:gitgutter_max_signs), 'max_signs')

sources_non_forked/vim-gitgutter/autoload/gitgutter/highlight.vim

@@ -64,14 +64,6 @@ function! gitgutter#highlight#linenr_toggle() abort
 endfunction
 
 
-function! gitgutter#highlight#define_sign_column_highlight() abort
-  if g:gitgutter_override_sign_column_highlight
-    highlight! link SignColumn LineNr
-  else
-    highlight default link SignColumn LineNr
-  endif
-endfunction
-
 function! gitgutter#highlight#define_highlights() abort
   let [guibg, ctermbg] = s:get_background_colors('SignColumn')
 
@@ -84,26 +76,24 @@ 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)
-      " Were the highlight self-contained we could just declare the
-      " background attributes and they would be merged.  But it might be a
-      " link, in which case it would be overwritten.  So re-declare it in its
-      " entirety.
-      let [guifg, ctermfg] = s:get_foreground_colors('GitGutter'.type)
-      execute "highlight GitGutter".type." guifg=".guifg." guibg=".guibg." ctermfg=".ctermfg." ctermbg=".ctermbg
+      if g:gitgutter_set_sign_backgrounds
+        execute "highlight GitGutter".type." guibg=".guibg." ctermbg=".ctermbg
+      endif
+      continue
+    elseif s:useful_diff_colours()
+      let [guifg, ctermfg] = s:get_foreground_colors('Diff'.type)
+    else
+      let [guifg, ctermfg] = s:get_foreground_fallback_colors(type)
     endif
+    execute "highlight GitGutter".type." guifg=".guifg." guibg=".guibg." ctermfg=".ctermfg." ctermbg=".ctermbg
   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)
-    execute "highlight GitGutter".type."Default guifg=".guifg." guibg=".guibg." ctermfg=".ctermfg." ctermbg=".ctermbg
-    execute "highlight default link GitGutter".type." GitGutter".type."Default"
-  endfor
+  if hlexists("GitGutterChangeDelete") && g:gitgutter_set_sign_backgrounds
+    execute "highlight GitGutterChangeDelete guibg=".guibg." ctermbg=".ctermbg
+  endif
+
   highlight default link GitGutterChangeDelete GitGutterChange
 
   " Highlights used for the whole line.
@@ -236,3 +226,20 @@ function! s:get_background_colors(group) abort
   let guibg = s:get_hl(a:group, 'bg', 'gui')
   return [guibg, ctermbg]
 endfunction
+
+function! s:useful_diff_colours()
+  let [guifg_add, ctermfg_add] = s:get_foreground_colors('DiffAdd')
+  let [guifg_del, ctermfg_del] = s:get_foreground_colors('DiffDelete')
+
+  return guifg_add != guifg_del && ctermfg_add != ctermfg_del
+endfunction
+
+function! s:get_foreground_fallback_colors(type)
+  if a:type == 'Add'
+    return ['#009900', '2']
+  elseif a:type == 'Change'
+    return ['#bbbb00', '3']
+  elseif a:type == 'Delete'
+    return ['#ff2222', '1']
+  endif
+endfunction

sources_non_forked/vim-gitgutter/autoload/gitgutter/utility.vim

@@ -162,7 +162,7 @@ endfunction
 
 
 function! gitgutter#utility#cd_cmd(bufnr, cmd) abort
-  let cd = s:unc_path(a:bufnr) ? 'pushd' : (gitgutter#utility#windows() ? 'cd /d' : 'cd')
+  let cd = s:unc_path(a:bufnr) ? 'pushd' : (gitgutter#utility#windows() && s:dos_shell() ? 'cd /d' : 'cd')
   return cd.' '.s:dir(a:bufnr).' && '.a:cmd
 endfunction
 
@@ -170,6 +170,10 @@ function! s:unc_path(bufnr)
   return s:abs_path(a:bufnr, 0) =~ '^\\\\'
 endfunction
 
+function! s:dos_shell()
+  return &shell == 'cmd.exe' || &shell == 'command.com'
+endfunction
+
 function! s:use_known_shell() abort
   if has('unix') && &shell !=# 'sh'
     let [s:shell, s:shellcmdflag, s:shellredir] = [&shell, &shellcmdflag, &shellredir]