There are three ways to represent Ukrainian apostrophe:
- U+0027 ' APOSTROPHE — produces bad-looking apostrophe, but is ASCII-compatible.
- U+2019 <cannot insert sample> RIGHT SINGLE QUOTATION MARK
- U+02BC ʼ MODIFIER LETTER APOSTROPHE
The second and third look identical (according to Unicode Code Charts), the difference between them is that second is a punctuation mark and the third is considered as part of a word.
Todays tendency is to use third one. It is chosen as character for apostrophe in Ukrainian IDNs, it is chosen as main apostrophe in the Ukrainian Unicode (default keyboard layout for X.Org) (U+02BC is now located on the button where U+2019 was formerly located).
Ukrainian Wikipedia mostly uses the first in text and titles for compatibility. It is possible to use the second in search (full-text search for "м<U+2019>ясо" shows "м<U+0027>ясо" in results, and quick search immediately goes there) (maybe it's lead of T23002). It isn't possible to use the third in search yet.
Please, make U+02BC to act similarly to U+2019 in search. (Currently U+2019 and U+02BC are "competing" characters for typographically correct apostrophe (although U+02BC was chosen by ICANN, usage of U+2019 started earlier).)