rails-stacktrace-mvim.user.js

// ==UserScript==
// @name          Rails Stacktrace TextMate Linker
// @namespace     https://github.com/ketan/chrome-plugins
// @description   make your stack trace lines open in TextMate
// @match         http://localhost/*
// @match         https://localhost/*
// ==/UserScript==

if (nodes = document.getElementById("traces") && document.querySelectorAll("#traces pre>code")) {
  var railsRoot;

  var possibleRoots = document.getElementsByTagName('code');
  for (var i = 0; i < possibleRoots.length; i++){
    var root = possibleRoots[i].innerHTML;
    if (root.match(/Rails.root/)){
      railsRoot = root.replace('Rails.root: ', '');
    }
  }
    

  for (var i=0, node; node = nodes[i++];) {
    var newHtml = [],
        lines = node.innerHTML.split(/\n/);

    for (var i=0, line; line = lines[i]; i++){
      var parts       = line.split(":in ");
      var pathAndLine = parts[0].split(":");
      newHtml.push("<a href='mvim://open?url=file://", railsRoot , '/', pathAndLine[0], "&amp;line=", pathAndLine[1], "&amp;column=1'>", line, "</a>\n");
    }
    node.innerHTML = newHtml.join("");
  }
}