pdf backend: Ignore diacritics when searching text
Ignore diacritics (accents, umlauts, diaeresis, etc.) when searching in case insensitive mode (default mode), as that would broaden the search giving more expected results.
Relevant flag was added in Poppler 0.73 and was implemented in https://gitlab.freedesktop.org/poppler/poppler/issues/637
Issue #58 (closed)
Closes #58 (closed)