Function toEnclosingExpr

src/codemirror.js:9172–9190

(cm)

  }

  function toEnclosingExpr(cm) {
    var pos = cm.getCursor(), line = pos.line, ch = pos.ch;
    var stack = [];
    while (line >= cm.firstLine()) {
      var text = cm.getLine(line);
      for (var i = ch == null ? text.length : ch; i > 0;) {
        var ch = text.charAt(--i);
        if (ch == ")")
          stack.push("(");
        else if (ch == "]")
          stack.push("[");
        else if (ch == "}")
          stack.push("{");
        else if (/[\(\{\[]/.test(ch) && (!stack.length || stack.pop() != ch))
          return cm.extendSelection(Pos(line, i));
      }
      --line; ch = null;
    }
  }

  function quit(cm) {
    cm.execCommand("clearSearch");