How to use hotkey to open an ASCII file with external text editor?


I want to highlight a file, then press a hotkey to open the file with an external text editor, for example,


You can specify a default text editor under Preferences / File Operations / Double-click on Files which will be used to open files that only contain text and don't have a default handler set up for their file type. If that's all you need, then doing that will let you push return on the files to open them.

On the other hand, if you want something else to happen on double-click/return, and want a special hotkey to open a particular editor, the command is usually:

"C:\Program Files\Editor Path\Editor.exe" {filepath$}

You can assign that to a toolbar button and give it a hotkey by editing the toolbars/menus. Or you can put it on a standalone hotkey via Settings > Customize Toolbars > Keys, then click the New icon at the top-left of the list and choose New Lister Hotkey.