diff --git a/runtime/syntax/dosbatch.vim b/runtime/syntax/dosbatch.vim
index 5560199..761fac0 100644
--- a/runtime/syntax/dosbatch.vim
+++ b/runtime/syntax/dosbatch.vim
@@ -3,6 +3,7 @@
 " Maintainer:	Mike Williams <mrmrdubya@gmail.com>
 " Filenames:    *.bat
 " Last Change:	3rd February 2024
+" 2024 Aug 14 by Vim Project: improve syntax (#15453)
 "
 " Options Flags:
 " dosbatch_cmdextversion	- 1 = Windows NT, 2 = Windows 2000 [default]
@@ -45,7 +46,7 @@
 syn match dosbatchEchoOperator  "\<echo\s\+\(on\|off\)\s*$"lc=4
 
 " For embedded commands
-syn match dosbatchCmd		"(\s*'[^']*'"lc=1 contains=dosbatchString,dosbatchVariable,dosBatchArgument,@dosbatchNumber,dosbatchImplicit,dosbatchStatement,dosbatchConditional,dosbatchRepeat,dosbatchOperator
+syn match dosbatchCmd		"(\s*'[^']*'"lc=1 contains=dosbatchString,dosbatchVariable,dosBatchArgument,@dosbatchNumber,dosbatchImplicit,dosbatchStatement,dosbatchConditional,dosbatchRepeat,dosbatchOperator,dosbatchIfOperator
 
 " Numbers - surround with ws to not include in dir and filenames
 syn match dosbatchInteger       "[[:space:]=(/:,!~-]\d\+"lc=1
@@ -102,9 +103,11 @@
   syn match dosbatchColonCommentErr contained "\s*:\s*:.*$"
 endif
 syn match dosbatchColonCommentErr contained "\s*:\s*:[^)]*\(\(\n\s*\)\?)\)\@="
-syn region dosbatchCodeBlock	transparent start=+(+ end=+)+ contains=dosbatchString,dosbatchVariable,dosBatchArgument,@dosbatchNumber,dosbatchImplicit,dosbatchStatement,dosbatchConditional,dosbatchRepeat,dosbatchOperator,@dosbatchCodeBlockComment,dosbatchColonCommentErr,dosbatchCodeBlock
+syn region dosbatchCodeBlock	transparent start=+(+ end=+)+ contains=dosbatchString,dosbatchVariable,dosBatchArgument,@dosbatchNumber,dosbatchImplicit,dosbatchStatement,dosbatchConditional,dosbatchRepeat,dosbatchOperator,dosbatchIfOperator,@dosbatchCodeBlockComment,dosbatchColonCommentErr,dosbatchCodeBlock
 syn match dosbatchCodeBlockErr	")"
 
+syn sync match dosbatchSyncCodeBlock grouphere NONE "^)\s*$"
+
 syn keyword dosbatchImplicit    append assoc at attrib break cacls cd chcp chdir
 syn keyword dosbatchImplicit    chkdsk chkntfs cls cmd color comp compact convert copy
 syn keyword dosbatchImplicit    date del dir diskcomp diskcopy doskey echo endlocal