*he uses

Sure. But what short-cut? Remember that it needs to:

• not clash with
  • any existing VE shortcut,
  • any expected VE shortcut for future uses (e.g. edit image/template/table), or
  • any OS or browser shortcut (e.g. Ctrl+C for copy, Cmd+Q for quit);
• be available on most users' keyboards;
• be type-able; and
• ideally be the "standard" shortcut.

This doesn't leave many options. :-(

I added your comment to Mediawiki.org.
I think I noticed that the numbers 8 and 9 are still available?
Or at least this is what I read in the new keyboard shortcuts list.
(Which, BTW, is not available for me by its shortcut, since / is located on the numeric pad or above number 7, thus won't work).

Change 160174 had a related patch set uploaded by Jforrester:
Add keyboard shortcuts for strikethrough and code annotations

https://gerrit.wikimedia.org/r/160174

Change 160174 merged by jenkins-bot:
Add keyboard shortcuts for strikethrough and code annotations

https://gerrit.wikimedia.org/r/160174

We need to change the shortcut key for code annotation on mac from "cmd+shift+3".Because,its a shortcut to take screenshot so it does not work there.

Re-fixed.

Verified the fix in Betalabs and test2

Verified the fix in production

@Jdforrester-WMF Since macOS Mojave, Shift-Command-5 is now used for an additional screenshot option, which conflicts with strikethrough. Is it possible to reconfigure? https://support.apple.com/en-us/HT201236

Google Docs uses Cmd+Shift+X on OSX (as opposed to +5): https://support.google.com/docs/answer/179738?co=GENIE.Platform%3DDesktop&hl=en

Happy to switch to this...

Unfortunately VE uses Cmd+Shift+X for "Change directionality"...