[Okular-devel] [Bug 181828] New: Okular does not find words with ligatures

[David Short]

http://bugs.kde.org/show_bug.cgi?id=181828

           Summary: Okular does not find words with ligatures
           Product: okular
           Version: unspecified
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: okular-devel at kde.org
        ReportedBy: david.short at mensa.org.au


Version:            (using KDE 4.1.4)
OS:                Linux
Installed from:    Ubuntu Packages

Here are two words: fire, fire.

They are identical, except that the first one contains a ligature bringing the
f and the i together.  The second one has no ligature.  The first is the
standard in proper typesetting, and it is the default output of LaTeX.

If I search for "fire" in Okular, the word will not be found, because Okular
doesn't understand the ligature.  By way of comparison, Adobe Reader for Linux
does understand the ligature, and finds the word.

This can lead to great frustration.

I imagine that this applies to all documents in Okular, rather than being
specific to the PDF backend.  There are a handful of other common ligatures
that this applies to (see http://en.wikipedia.org/wiki/Typographic_ligature).


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