[Bug 379901] New: Pango ligature detection overzealous

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https://bugzilla.redhat.com/show_bug.cgi?id=379901

           Summary: Pango ligature detection overzealous
           Product: Fedora
           Version: f7
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: medium
          Priority: low
         Component: pango
        AssignedTo: besfahbo redhat com
        ReportedBy: jhe phys soton ac uk
         QAContact: extras-qa fedoraproject org
                CC: fedora-fonts-bugs-list redhat com


Description of problem:
Pango's ligature detection is too keen (at least) with the Linux Libertine font.
It picks up things like fi, fl and ffi mid-word, but also spots roman numerals
and "No" as short for "number" when it's not appropriate.

Version-Release number of selected component (if applicable):
pango-1.16.4-2.fc7
linux-libertine-fonts-2.4.9-1.fc7

How reproducible:
Always.

Steps to Reproduce:
1. Start Pango-enabled app (e.g., Inkscape, Firefox).
2. Choose Linux Libertine font.
3. Find/type: difficult, UNIX, ASCII, Nobody.
  
Actual results:
See attached png (from Inkscape).

Expected results:
No ligature detection for UNIX, ASCII and Nobody.

------- Additional Comments From jhe phys soton ac uk  2007-11-13 08:04 EST -------
Created an attachment (id=256821)
 --> (https://bugzilla.redhat.com/attachment.cgi?id=256821&action=view)
Image displaying inappropriate ligatures


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