Highlight commit message

Added rules to hightlight commit message the same way like original
git command with enabled colors does. First 50 characters on first line
are marked as title, whole second line should be empty.

Author: lubomir

syntax/git-status.vim

@@ -1,6 +1,11 @@
 runtime syntax/diff.vim
 setlocal filetype=
 
+" match first 50 characters on first line, unless it starts with #
+syntax match gitCommitHeader    +^[^#]\%1l.\{1,50}+
+" match everything on line 2 if first character is not #
+syntax match gitCommitEmptyLine +^[^#]\%2l.*+
+
 syntax match gitStatusComment   +^#.*+ contains=ALL
 
 syntax match gitStatusBranch    +On branch .\++
@@ -9,6 +14,9 @@ syntax match gitStatusUndracked +\t\zs.\++
 syntax match gitStatusNewFile   +\t\zsnew file: .\++
 syntax match gitStatusModified  +\t\zsmodified: .\++
 
+highlight link gitCommitHeader      Title
+highlight link gitCommitEmptyLine   Error
+
 highlight link gitStatusComment     Comment
 
 highlight link gitStatusBranch      Title