message: Only use gnuplot syntax highlighting
  We do not embed the language because commenting inside \addplot is done
  with '%' and not '#'.  Related to
diff: "name": "punctuation.definition.arguments.begin.latex"
  }
  },
  - "contentName": "source.gnuplot",
  "patterns": [
  + {
  + "begin": "%",
  + "beginCaptures": {
  + "0": {
  + "name": "punctuation.definition.comment.tex"
  + }
  + },
  + "end": "$\\n?",
  + "name": "comment.line.percentage.tex"
  + },
  {
  "include": "source.gnuplot"
  }
  