Interactive mode tagging for locate.el, timer-list.el, and chistory.el

Hello,

I’d like to work on the “Do interactive mode tagging for commands” item 
in etc/TODO.

I found the following apparently mode-specific commands that remain 
untagged:
- locate-mouse-view-file and locate-do-redisplay — locate-mode
- timer-list-cancel — timer-list-mode
- command-history-repeat — command-history-mode

I plan to handle each library as a separate small patch. Is anyone 
already working on these, or are there any objections to these 
particular mode tags?

Thanks,
Ahmed Mohamed
[email protected] | ahmh.dev <https://ahmh.dev>