The understated steps apply to Firefox. Step 1: On your browser address bar key in about:config and hit Enter.
Step 2: Search for view_source.editor.external and change the value to false by double clicking on it.
Step 3: Now, search for view_source.editor.path and set its value to the .exe location of the desired editor.
I am sure most developers will vouch for it because you will be able to perform actions more easily. You will be able to cut-copy-paste faster, edit the source quickly and things of similar nature. A developer understands it all and knows how much of pain it can relieve. Right?
