Problem: Insufficient testing for getcmdcompltype().
Solution: Add a few more test cases. (closesvim/vim#12268)
961b2e54bd
(cherry picked from commit 56472e5262)
Problem: Crash when passing NULL to setcmdline(). (Andreas Louv)
Solution: Use tv_get_string() instead of using v_string directly.
(closesvim/vim#12231, closesvim/vim#12227)
ac6cd31afc
(cherry picked from commit 60549b1352)