fix issue pangloss#107, makes 'arguments' become global keyword

Author: crusoexia

syntax/javascript.vim

@@ -38,10 +38,11 @@ syntax keyword jsBooleanFalse   false
 syntax keyword jsModules        import export contained
 syntax keyword jsModuleWords    default from as contained
 syntax keyword jsOf             of contained
+syntax keyword jsArgsObj        arguments
 
 syntax region jsImportContainer      start="^\s\?import \?" end="$" contains=jsModules,jsModuleWords,jsComment,jsStringS,jsStringD,jsTemplateString
 
-syntax region jsExportContainer      start="^\s\?export \?" end="$" contains=jsModules,jsModuleWords,jsComment,jsTemplateString,jsStringD,jsStringS,jsRegexpString,jsNumber,jsFloat,jsThis,jsOperator,jsBooleanTrue,jsBooleanFalse,jsNull,jsFunction,jsArrowFunction,jsGlobalObjects,jsExceptions,jsDomErrNo,jsDomNodeConsts,jsHtmlEvents,jsDotNotation,jsBracket,jsParen,jsFuncCall,jsUndefined,jsNan,jsKeyword,jsClass,jsStorageClass,jsPrototype,jsBuiltins,jsNoise,jsAssignmentExpr
+syntax region jsExportContainer      start="^\s\?export \?" end="$" contains=jsModules,jsModuleWords,jsComment,jsTemplateString,jsStringD,jsStringS,jsRegexpString,jsNumber,jsFloat,jsThis,jsOperator,jsBooleanTrue,jsBooleanFalse,jsNull,jsFunction,jsArrowFunction,jsGlobalObjects,jsExceptions,jsDomErrNo,jsDomNodeConsts,jsHtmlEvents,jsDotNotation,jsBracket,jsParen,jsFuncCall,jsUndefined,jsNan,jsKeyword,jsClass,jsStorageClass,jsPrototype,jsBuiltins,jsNoise,jsAssignmentExpr,jsArgsObj
 
 "" JavaScript comments
 syntax keyword jsCommentTodo    TODO FIXME XXX TBD contained
@@ -107,9 +108,9 @@ syntax match   jsFloat            /\<-\=\%(\d\+\.\d\+\|\d\+\.\|\.\d\+\)\%([eE][+
 syntax match   jsObjectKey        /\<[a-zA-Z_$][0-9a-zA-Z_$]*\>\(\s*:\)\@=/ contains=jsFunctionKey contained
 syntax match   jsFunctionKey      /\<[a-zA-Z_$][0-9a-zA-Z_$]*\>\(\s*:\s*function\s*\)\@=/ contained
 
-syntax match   jsAssignmentExpr     /\v%([a-zA-Z_$]\k*\.)*[a-zA-Z_$]\k*\s*\=/ contains=jsFuncAssignExpr,jsAssignExpIdent,jsPrototype,jsOperator,jsThis,jsNoise
+syntax match   jsAssignmentExpr     /\v%([a-zA-Z_$]\k*\.)*[a-zA-Z_$]\k*\s*\=/ contains=jsFuncAssignExpr,jsAssignExpIdent,jsPrototype,jsOperator,jsThis,jsNoise,jsArgsObj
 syntax match   jsAssignExpIdent     /\v[a-zA-Z_$]\k*\ze%(\s*\=)/ contained
-syntax match   jsFuncAssignExpr     /\v%(%([a-zA-Z_$]\k*\.)*[a-zA-Z_$]\k*\s*\=\s*){-1,}\ze%(function\s*\*?\s*\()/ contains=jsFuncAssignObjChain,jsFuncAssignIdent,jsFunction,jsPrototype,jsOperator,jsThis contained
+syntax match   jsFuncAssignExpr     /\v%(%([a-zA-Z_$]\k*\.)*[a-zA-Z_$]\k*\s*\=\s*){-1,}\ze%(function\s*\*?\s*\()/ contains=jsFuncAssignObjChain,jsFuncAssignIdent,jsFunction,jsPrototype,jsOperator,jsThis,jsArgsObj contained
 syntax match   jsFuncAssignObjChain /\v%([a-zA-Z_$]\k*\.)+/ contains=jsPrototype,jsNoise contained
 syntax match   jsFuncAssignIdent    /\v[a-zA-Z_$]\k*\ze%(\s*\=)/ contained
 
@@ -189,7 +190,7 @@ endif "DOM/HTML/CSS
 "" end DOM/HTML/CSS specified things
 
 "" Code blocks
-syntax cluster jsExpression contains=jsComment,jsLineComment,jsBlockComment,jsTaggedTemplate,jsTemplateString,jsStringD,jsStringS,jsRegexpString,jsNumber,jsFloat,jsThis,jsStatic,jsSuper,jsOperator,jsBooleanTrue,jsBooleanFalse,jsNull,jsFunction,jsArrowFunction,jsGlobalObjects,jsExceptions,jsFutureKeys,jsDomErrNo,jsDomNodeConsts,jsHtmlEvents,jsDotNotation,jsBracket,jsParen,jsBlock,jsFuncCall,jsUndefined,jsNan,jsKeyword,jsStorageClass,jsPrototype,jsBuiltins,jsNoise,jsCommonJS,jsAssignmentExpr,jsImportContainer,jsExportContainer,jsClass
+syntax cluster jsExpression contains=jsComment,jsLineComment,jsBlockComment,jsTaggedTemplate,jsTemplateString,jsStringD,jsStringS,jsRegexpString,jsNumber,jsFloat,jsThis,jsStatic,jsSuper,jsOperator,jsBooleanTrue,jsBooleanFalse,jsNull,jsFunction,jsArrowFunction,jsGlobalObjects,jsExceptions,jsFutureKeys,jsDomErrNo,jsDomNodeConsts,jsHtmlEvents,jsDotNotation,jsBracket,jsParen,jsBlock,jsFuncCall,jsUndefined,jsNan,jsKeyword,jsStorageClass,jsPrototype,jsBuiltins,jsNoise,jsCommonJS,jsAssignmentExpr,jsImportContainer,jsExportContainer,jsClass,jsArgsObj
 syntax cluster jsAll        contains=@jsExpression,jsLabel,jsConditional,jsRepeat,jsReturn,jsStatement,jsTernaryIf,jsException
 syntax region  jsBracket    matchgroup=jsBrackets     start="\[" end="\]" contains=@jsAll,jsParensErrB,jsParensErrC,jsBracket,jsParen,jsBlock,@htmlPreproc fold
 syntax region  jsParen      matchgroup=jsParens       start="("  end=")"  contains=@jsAll,jsOf,jsParensErrA,jsParensErrC,jsParen,jsBracket,jsBlock,@htmlPreproc fold
@@ -216,7 +217,6 @@ syntax match   jsFuncName       contained /\<[a-zA-Z_$][0-9a-zA-Z_$]*/ nextgroup
 syntax region  jsFuncArgs       contained matchgroup=jsFuncParens start='(' end=')' contains=jsFuncArgCommas,jsFuncArgRest,jsAssignmentExpr nextgroup=jsFuncBlock keepend skipwhite skipempty
 syntax match   jsFuncArgCommas  contained ','
 syntax match   jsFuncArgRest    contained /\%(\.\.\.[a-zA-Z_$][0-9a-zA-Z_$]*\))/
-syntax keyword jsArgsObj        arguments contained containedin=jsFuncBlock
 
 syntax match jsArrowFunction /=>/