bugFree UCS Outline Fonts - Bugs: bug #50959, Too much space after Sinhala...


bug #50959: Too much space after Sinhala characters

Submitted by:  David Corbett <dscorbett>
Submitted on:  Fri 05 May 2017 08:29:37 PM UTC  
Category:  individual character(s) Severity:  3 - Normal
Item Group:  letter positioning poor Status:  Fix posted
Privacy:  Public Assigned to:  Steve White <Stevan_White>
Open/Closed:  Open Release:  development

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Tue 19 Sep 2017 08:22:01 PM UTC, comment #2:

Worked like a dream. Also a dream: that I spent a couple of evenings trying solutions like this one, before I did the very complicated GPOS thing that you saw.
Thanks a lot, David!

Steve White <Stevan_White>
Project AdministratorIn charge of this item.
Wed 17 May 2017 01:05:24 PM UTC, comment #1:

This is brilliant if it works. I will certainly try it.

If you're right, it is very strange to me: I had tried similar things, but I had convinced myself at the time that OT substitution never applies to the space character -- because, I figured, the text is split on that character during processing.

Steve White <Stevan_White>
Project AdministratorIn charge of this item.
Fri 05 May 2017 08:29:37 PM UTC, original submission:

In FreeSerif, the lookup "'dist' wide space in Sinhala" adds space after Sinhala characters except before certain other characters used in Sinhala. The log message for revision 2727 explains that this was intended to increase the space between words. However, it is a brittle solution, since there could always be more punctuation or symbols used with Sinhala that shouldn’t have spaces before them.

I got it to work a different way. I deleted "positioning for space in Sinhala" and "'dist' wide space in Sinhala". I created a new 'locl' lookup for the Sinhala script, to which I added a single substitution from space to emspace. It looks fine with HarfBuzz; the em space is too wide but it’s fine for a proof of concept.

David Corbett <dscorbett>


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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2017-09-19 Stevan_White StatusNeed info => Fix posted
    2017-05-17 Stevan_White StatusNone => Need info
        Assigned toNone => Stevan_White

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