message: Tweak SelectionRangeProvider
diff: @@ -133,6 +133,17 @@ export class SelectionRangeProvider implements vscode.SelectionRangeProvider {
  column: node.location.end.column - '}'.length
  })
  }
  + } else if (latexParser.isMathDelimiters(node)) {
  + return {
  + start: LuPos.from({
  + line: node.location.start.line,
  + column: node.location.start.column + node.left.length + node.lcommand.length
  + }),
  + end: LuPos.from({
  + line: node.location.end.line,
  + column: node.location.end.column - node.right.length - node.rcommand.length
  + })
  + }
  }
  return
  }
  