Quoting long filenames

From Unofficial Konfabulator Wiki

When passing filenames to programs using runCommand or runCommandInBg, it is important to put quotation marks around filenames with spaces or other special characters. You can use the following function to put double-quotes (") around your filenames before passing them in a runCommand string.

function quoteFilename(str)
{
  return "\"" + str.replace(/[\\"]/g, "\\$&") + "\"";
}

[edit] Example

This will start Adobe Reader 7.0 on Windows:

var path = "C:/Program Files/Adobe/Acrobat 7.0/Reader/AcroRd32.exe";
runCommand("start " + quoteFilename(path));