Spell check .*ztst files by vim

[Jun T <takimoto-j@xxxxxxxxxxxxxxxxx>]

If I use Util/ztst-syntax.vim as the vim syntax file for *.ztst,
it seems the following patch is necessary to enable spell check.


diff --git a/Util/ztst-syntax.vim b/Util/ztst-syntax.vim
index 639b9a4ec..42378e7a1 100644
--- a/Util/ztst-syntax.vim
+++ b/Util/ztst-syntax.vim
@@ -36,7 +36,7 @@ syn match  ztstPayload             /^\s.*/ contains=@zsh
 syn match  ztstExitCode            /^\d\+\|^-/                nextgroup=ztstFlags
 syn match  ztstFlags               /[.dDqf]*:/      contained nextgroup=ztstTestName contains=ztstColon
 syn match  ztstColon               /:.\@=/          contained
-syn region ztstTestName            start=// end=/$/ contained 
+syn region ztstTestName            start=// end=/$/ contained contains=@Spell
 
 syn match  ztstInputMarker         /^<.\@=/                   nextgroup=ztstInput
 syn region ztstInput               start=// end=/$/ contained
@@ -54,7 +54,7 @@ syn match  ztstErrputLiteral       /^[?].\@=/                 nextgroup=ztstErrp
 syn region ztstErrput              start=// end=/$/ contained
 
 syn match  ztstFrequentExplanationMarker /^F:/                nextgroup=ztstFrequentExplanation
-syn region ztstFrequentExplanation start=// end=/$/ contained
+syn region ztstFrequentExplanation start=// end=/$/ contained contains=@Spell
 
 syn match  ztstDirective           /^%.*/