Opens the current script for editing in the default editor.
Edit
The Edit function opens the current script for editing using the associated "edit" verb in the registry (or Notepad if no verb). However, if an editor window appears to have the script already open (based on its window title), that window is activated instead of opening a new instance of the editor.
The default program, script or command line executed by the "edit" verb can be changed via Editor settings in the Dash.
This function has no effect when operating from within a compiled script.
On a related note, AutoHotkey syntax highlighting can be enabled for various editors. In addition, context sensitive help for AutoHotkey functions can be enabled in any editor via this example. Finally, your productivity may be improved by using an auto-completion utility like the script by boiler or the script by Helgef, which works in almost any editor. It watches what you type and displays menus and parameter lists, which does some of the typing for you and reminds you of the order of parameters.
Reload, How to edit a script, Editors with AutoHotkey support
If your editor's command-line usage is something like Editor.exe "Full path of script.ahk", the following can be used to set it as the default editor for ahk files. When you run the script, it will prompt you to select the executable file of your editor.
Editor := FileSelect(2,, "Select your editor", "Programs (*.exe)")
if Editor = ""
ExitApp
RegWrite Format('"{1}" "%L"', Editor), "REG_SZ", "HKCR\AutoHotkeyScript\Shell\Edit\Command"