[Libreoffice-bugs] [Bug 107250] New: Kerning is unexpectedly tight for repeated "1" s in Liberation Sans and Arial

Tue Apr 18 20:30:40 UTC 2017

https://bugs.documentfoundation.org/show_bug.cgi?id=107250

            Bug ID: 107250
           Summary: Kerning is unexpectedly tight for repeated "1"s in
                    Liberation Sans and Arial
           Product: LibreOffice
           Version: 5.2.6.2 release
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: graphics stack
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: codeman38 at gmail.com

Description:
In LibreOffice on both Windows and Mac, some fonts such as Arial and Liberation
Sans have an odd rendering/kerning quirk. The digits in these fonts normally
align with one another, but when two "1"s appear next to each other, they are
kerned more tightly.

This does *not* appear to be related to the Pair Kerning option in Writer - the
same issue appears regardless of whether Pair Kerning is set. The same
rendering issue even appears in Calc, which makes columns of numbers look
awkwardly misaligned when some of them contain "11" as a substring.

Steps to Reproduce:
1. In either Writer or Calc, enter the following numbers, one per line, setting
the font to either Liberation Sans or Arial: 123456, 121212, 212121, 111111.

Actual Results:  
The lines all appear to be the same length.

Expected Results:
The first three lines are of equal length, but the last line (111111) is
noticeably narrower.

Reproducible: Always

User Profile Reset: No

Additional Info:

User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:52.0)
Gecko/20100101 Firefox/52.0

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