How to set Fiddler2 prefered Text Editor for Rules?

fiddler, settings

Solution

Fiddler v5: `Tools -> Options -> Tools -> Text Editor`

For older versions this might be an option:

`Tools` > `Fiddler Options...` > `Extensions` > `Editor`.

Problem

I've read the FAQ and set my registry key to use a custom text editor... and it works for the "view in notepad" button on the header panels. But when I try to edit rules (via menu `Rules` > `Customize rules`) I still get notepad. Do I need to edit some reg key not mentioned in the FAQ? or is this a bug?

Original source