Duplicate entries in the list returned from completing-read-multiple when using C-j and trailing ,

[plattfot]

Encounter this bug when testing out selectrum

If I have (selectrum-mode -1) (i.e. run emacs' implementation of completing-read-multiple), then run this code

(completing-read-multiple "Test: " '("foo" "bar" "baz"))

Type in baz, (note the trailing ,) hit C-j I get

("baz")

But when I enable selectrum (selectrum-mode +1), run the same code, with the same input and hit C-j I get

("baz" "baz")

I.e run the code, hit TAB and then C-j.

I get the expected behavior if I hit enter or remove the trailing , and hit C-j.

I tested this with version 3.0 (from guix), 20201216.1841 (from melpa) and f5f2329 (from master).

[clemera]

Thanks, should be fixed by #296?

[plattfot]

That fixed it for me thanks!
Closing this issue.