Distinct appearance for (primary) cursor while in multiple mode

[myfonj]

It would be beneficial to be able to quickly distinguish whether there is single insertion point (cursor) or if there are multiple of them.

(Yes, this information is currently present in the Overview Ruler to some degree, but FMPoW user must actively look for it.)

Use case: after invoking (e.g.) Select All Occurrences one can easily forget to Esc - cancel multi cursor before continuing to type at "primary" position, effectively overwriting places out of viewport. Then it is necessary to undo those mistypes, cancel multi cursor and start over.

(I feel embarrassed to tell this happens to me on daily basis.)

Related: #58287 - in this context it would be especially beneficial to have the primary ("active") cursor differentiated from regular.

Current state:

Mockup:

Personally I wouldn't mind even swapping editor.cursorStyle: e.g. from line to block for primary cursor and to underline for secondary while in multi cursor mode.

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• Different colors for active and secondary cursors (#58287)

[remy]

I got super confused by this too:

Which one is my real cursor?

[alexdima]

Let's track in #85630