Binary package hint: kile
Environment: Kubuntu 9.04, KDE 4.3.0, Kile 1:2.1.0~svn942443-0ubuntu4.1 0
(same problem appeared using Kile (version as above) with Kubuntu 9.04, KDE 4.2.2, 4.2.3, 4.3rc2)
(same problem appeared using Kile 2.1 beta 1 on KDE 4.3.0)
(same problem appears using Kate 4:4.3.0-0ubuntu1~jaunty1~ppa1 0)
(problem does not appear using OpenSuse, KDE 4.x, Kile 2.1 beta 1)
(problem does not appear using other (non-KDE-)programs like OpenOffice or Nano in Kubuntu / KDE 4.x)
When opening tex-files with a lot of cyrillic script in (KDE4-)Kile, errors occur in form of wrong signs (questionmark in a »box«, �).
Please see attachment 01.tex filled with »small cyrillic letter o« (bottom of file, in the last block: line 1448, col 65). This can be reproduced with other cyrillic letters, eg. »small cyrillic letter m«, but not with latin script:
Problem seems not to occur with a file of the same style using the »small latin letter o« over and over again, at least not withing the first 6000 lines (please see attachment 02.tex).
In 01.tex it seems like the wrong sign is added to the rest (line is longer). In the document where i initially found the problem it seemed more like the wrong sign would replace a »right« sign that was supposed to be shown.
When opened with OpenOffice (where it displays correctly) and saved again (as textfile), Kile opens the file without the error (attachment 03.tex).
Bug seems to have been introduced in Kubuntu with KDE 4.x. File works fine in KDE3-version of Kile.
the »questionmark« actually replaces a sign, the line only appears longer because of the higher width of the questionmark compared to the small cyrillic o.
i attach a screenshot in case you cannot reproduce the problem. the screenshot shows the very last block of text in 01.tex when opened with kile 2.1.0~svn942443 (the standard version of kubuntu 9.04) in a KDE4-environment.