Reported directly to devteam: using '#adjust a a' to collect
invent stacks compatible with the one in slot 'a' all into 'a' gave
feedback of "Merging: a - ..." even though "Collecting: a - ..."
was intended. Also, if there weren't any such compatible stacks,
so that the whole operation didn't accomplish anything, it reported
"Collecting a - ..." without the intended colon between the action
and the inventory letter.
Test case was trivial: start with a stack of 2 of something in 'a'
and use '#adjust 1a b' to split into two stacks, then '#adjust a a'
to collect them back again.
While fixing this, I noticed that '#adjust a b' and '#adjust b a'
(from same starting situation) just swapped a and b instead of the
intended behavior of merging them back together.
f801863e5c