forked from aniani/vim
Problem: missing info about register completion in complete_info()
(after v9.1.1408)
Solution: update documentation and mention that register is used as
source, add a test (glepnir)
closes: #17389
Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>