message: Fix Declare \Sexpr syntax
  For the moment, we do not accept any braces inside \Sexpr argument.
diff: "Rnw"
  ],
  "patterns": [
  + {
  + "captures": {
  + "1": {
  + "name": "support.function.verb.latex"
  + },
  + "2": {
  + "name": "punctuation.definition.function.latex"
  + },
  + "3": {
  + "name": "punctuation.definition.arguments.begin.latex"
  + },
  + "4": {
  + "patterns": [
  + {
  + "include": "source.r"
  + }
  + ]
  + },
  + "5": {
  + "name": "punctuation.definition.arguments.end.latex"
  + }
  + },
  + "match": "((\\\\)Sexpr)(\\{)([^\\{\\}]*)(\\})",
  + "name": "meta.function.verb.latex"
  + },
  {
  "include": "text.tex.latex"
  },
  