vim: add operator symbols and keywords

bshell.vim/syntax/bshell.vim

@@ -7,9 +7,11 @@ set cpoptions&vim
 setlocal iskeyword+=-
 
 syn match	bshellFunctionRef	/\<[A-Za-z][A-Za-z0-9]*\(-[A-Za-z0-9][A-Za-z0-9]*\)\+\>/
-syn match	bshellVariable	/\$[A-Za-z][A-Za-z0-9_]*/
+syn match	bshellVariable	/\$[A-Za-z_][A-Za-z0-9_]*/
 syn match	bshellArgFlag	/\<-[A-Za-z][A-Za-z0-9]*\(-[A-Za-z0-9][A-Za-z0-9]*\)*\>/
-syn keyword	bshellKeyword	func
+syn keyword	bshellKeyword	func if elseif else
+
+syn keyword	bshellBuiltinCommand	echo
 
 syn keyword	bshellTodo	contained TODO FIXME XXX NOTE HACK TBD
 syn match	bshellLineComment	/#.*$/ contains=bshellTodo
@@ -33,16 +35,33 @@ syn case	match
 syn cluster     bshellNumber	contains=bshellInteger,bshellReal
 
 syn cluster	bshellLiteral	contains=@bshellNumber,@bshellString
-syn cluster	bshellAll	contains=@bshellLiteral,bshellVariable,bshellKeyword,bshellArgFlag,bshellFunctionRef,bshellSymbolOp,bshellKeywordOp
+syn cluster	bshellAll	contains=
+	        \ @bshellLiteral,bshellVariable,bshellKeyword,bshellArgFlag,
+	        \ bshellFunctionRef,bshellBuiltinCommand,bshellSymbolOp,
+	        \ bshellKeywordOp,bshellTerminator,bshellControlSymbols,
+	        \ bshellBraces,bshellParens,bshellStructureDelimiter
 
-syn match	bshellSymbolOp	"[+]" display
-syn keyword	bshellKeywordOp	is not understands and or
+syn match	bshellBraces	"[{}]" display
+syn match	bshellParens	"[()]" display
+syn match	bshellStructureDelimiter	"@[{(]" display
+syn match	bshellControlSymbols	"[[\]]" display
+syn match	bshellControlSymbols	"|" display
+syn match	bshellSymbolOp	"\*" display
+syn match	bshellSymbolOp	"[\/*%&!,]" display
+syn match	bshellSymbolOp	"[+\-/*%!]=" display
+syn match	bshellSymbolOp	"\s\+[\-+]\s\+" display
+syn match	bshellTerminator	"[;]" display
+syn keyword	bshellKeywordOp	-f -band -bor -bxor -bnot -shl -shr
+	        \ -eq -ne -gt -lt -ge -le -match -notmatch -replace
+	        \ -like -notlike -in -notin -contains -notcontains
+	        \ -and -or -xor -not -split -join -is -isnot -as
 
 hi def link	bshellKeyword	Statement
 hi def link	bshellArgFlag	Tag
 hi def link	bshellVariable	Identifier
 hi def link	bshellLineComment	Comment
 hi def link	bshellFunctionRef	Function
+hi def link	bshellBuiltinCommand	Function
 hi def link	bshellString	String
 hi def link	bshellInterpolatedString	String
 hi def link	bshellLiteralString	String
@@ -50,8 +69,13 @@ hi def link	bshellInteger	Number
 hi def link	bshellReal	Float
 
 hi def link	bshellInterpolationDelimiter Delimiter
+hi def link	bshellStructureDelimiter	Delimiter
+hi def link	bshellBraces	Delimiter
+hi def link	bshellParens	Delimiter
+hi def link	bshellControlSymbols	Operator
 hi def link	bshellSymbolOp	Operator
 hi def link	bshellKeywordOp	Operator
+hi def link	bshellTerminator	Delimiter
 
 " The default highlighting.
 " hi def link	bshellUnspecifiedStatement	Statement