diff --git a/runtime/syntax/gitrebase.vim b/runtime/syntax/gitrebase.vim
index bc6f34d..13f157b 100644
--- a/runtime/syntax/gitrebase.vim
+++ b/runtime/syntax/gitrebase.vim
@@ -2,7 +2,7 @@
 " Language:	git rebase --interactive
 " Maintainer:	Tim Pope <vimNOSPAM@tpope.org>
 " Filenames:	git-rebase-todo
-" Last Change:	2019 Dec 06
+" Last Change:	2022 Jan 05
 
 if exists("b:current_syntax")
   finish
@@ -10,8 +10,10 @@
 
 syn case match
 
-syn match   gitrebaseHash   "\v<\x{7,}>"                               contained
-syn match   gitrebaseCommit "\v<\x{7,}>"    nextgroup=gitrebaseSummary skipwhite
+let s:c = escape((matchstr(getline('$'), '^[#;@!$%^&|:]\S\@!') . '#')[0], '^$.*[]~\"/')
+
+syn match   gitrebaseHash   "\v<\x{7,}>"                               contained contains=@NoSpell
+syn match   gitrebaseCommit "\v<\x{7,}>"    nextgroup=gitrebaseSummary skipwhite contains=@NoSpell
 syn match   gitrebasePick   "\v^p%(ick)=>"   nextgroup=gitrebaseCommit skipwhite
 syn match   gitrebaseReword "\v^r%(eword)=>" nextgroup=gitrebaseCommit skipwhite
 syn match   gitrebaseEdit   "\v^e%(dit)=>"   nextgroup=gitrebaseCommit skipwhite
@@ -26,12 +28,15 @@
 syn match   gitrebaseReset  "\v^(t|reset)=>" nextgroup=gitrebaseName skipwhite
 syn match   gitrebaseSummary ".*"               contains=gitrebaseHash contained
 syn match   gitrebaseCommand ".*"                                      contained
-syn match   gitrebaseComment "^\s*#.*"             contains=gitrebaseHash
+exe 'syn match gitrebaseComment " \@<=' . s:c . ' empty$" containedin=gitrebaseSummary contained'
+exe 'syn match gitrebaseComment "^\s*' . s:c . '.*" contains=gitrebaseHash'
 syn match   gitrebaseSquashError "\v%^%(s%(quash)=>|f%(ixup)=>)" nextgroup=gitrebaseCommit skipwhite
 syn match   gitrebaseMergeOption "\v-[Cc]>"  nextgroup=gitrebaseMergeCommit skipwhite contained
 syn match   gitrebaseMergeCommit "\v<\x{7,}>"  nextgroup=gitrebaseName skipwhite contained
 syn match   gitrebaseName        "\v[^[:space:].*?i:^~/-]\S+" nextgroup=gitrebaseMergeComment skipwhite contained
-syn match   gitrebaseMergeComment "#"  nextgroup=gitrebaseSummary skipwhite contained
+exe 'syn match gitrebaseMergeComment "' . s:c . '"  nextgroup=gitrebaseSummary skipwhite contained'
+
+unlet s:c
 
 hi def link gitrebaseCommit         gitrebaseHash
 hi def link gitrebaseHash           Identifier