Up to now the chat autocompletion did complete words, even if there were
multiple candidates which matched available. So if for example the
autocomplete list contained "bar" and "baz" and a user typed "ba",
autocompletion would complete it to "bar", ignoring that "baz" was
available as possibly desired result as well. In practice this lead to
people regularly getting completions they didn't intend to get. This
commit fixes that by only completing text, if there is only a single
candidate available.
Dunedan
a917d393e1