[Typing this a 2nd time my first reply disappeared as I hit the wrong button]
Ken,
Thanks for the reply. I am running Office 365, I have used the Advanced Editor to look at the code. However when the Power Query window is up one can't open/edit other Excel stuff like other Power Query windows. I have had a few recent cases where I wanted to look at Power Query M code and use parts in another Excel Power Query. I have taken screen shots of Advanced Editor, but not as nice as having it in a normal text editor. Also I have used the trick of selecting all queries the copying/pasting and getting all the M code in once place.
Thanks for the link on the Notepad++ option. I may have to dig up Notepad++ just for that. It looks like one has to manually tweak Notepad++ every time as there is not a language file that can be copied/updated. Surprised nobody has built it for VS Code or other editors. Maybe if i can figure it out I may build a language file for UltraEdit with the Notepad++ info. Years ago i bought a lifetime license with free upgrades of UltraEdit.
I have started playing with free version of Monkey tools. There is some cool stuff in there. I saw the colorization stuff was for paid users. For my case mentioned above I think Query Sleuth would work as the dialog box is not modal although there are times when an Editor would still be nice (am I old fashioned?). However I am not sure if I can justify an annual reoccurring cost of just under$100 a year. Personally I hate reoccurring costs vs paying extra for a lifetime license but that is a different story.
thanks for the reply and information
Alan