bugFree UCS Outline Fonts - Bugs: bug #35278, Devanagari lookup problems

 
 

bug #35278: Devanagari lookup problems

Submitted by:  Steve White <Stevan_White>
Submitted on:  Tue 10 Jan 2012 05:55:30 PM UTC  
 
Category: character rangeSeverity: 3 - Normal
Item Group: character substitution issueStatus: Fixed
Privacy: PublicAssigned to: Steve White <Stevan_White>
Open/Closed: ClosedRelease: 2010-09-19

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Wed 25 Jan 2012 11:12:53 AM UTC, comment #2:

Status report:

The previous posting confused the situation in FreeSerif and FreeSans.

FreeSans is based on the gargi TrueType font.
Some lookup tables were provided, not all worked right, and there were many other problems. (The gargi team has been alerted.)

FreeSerif is based on the velthuis TeX font.
No lookups were provided.
The quality of the characters was poor because of the way they were extracted from the MetaFont descriptions.

Both are being extensively re-worked.

All the FreeSerif letters have been replaced with ones provided in the new velthuis package as pfb files.

There is extensive information about conjunct forms in the velthuis documentation. Also, a cmap file provided by Zdenek Wagner was a great aid in associating conjunct glyphs with character sequences. Several test scripts have been written.

In FreeSans, many problems have been corrected, and the Unicode range is now complete. The tables are still being re-worked: Hindi is mostly supported. A lot of Sanskrit conjuncts are missing.

Efforts have been made to support modern Hindi, Sanskrit and Marathi.

Steve White <Stevan_White>
Project AdministratorIn charge of this item.
Tue 10 Jan 2012 06:16:33 PM UTC, comment #1:

Note that FreeSerif has no lookup tables for Devanagari.
This is bad, and I hope to fix it soon.

FreeSans is based on Gargi, and inherited a lot of problems from it, but also some new ones have arisen.

First, I made an HTML file from the text in the Word document.
Find attached.

After several changes, several of the problems were resolved. However the first two (regarding the conjunct with ka), still show up in LibreOffice Writer.
See attached PDF.
But... the same text is correct in FireFox.
See attached jpeg.

One idea is, it has something to do with the language specified for the runs of text in LibreOffice. However, I have never managed to get Hindi to appear on the Language menu under Character Formatting.

Now, FireFox and LibreOffice use different font rendering engines, but that doesn't completely account for it. I am aware of multiple OpenType feature-related problems with the LibreOffice engine. They have not been prompt with fixing problems.

The tables in FreeSerif originated in gargi, but there are differences. So far I haven't identified which difference triggers this issue.

(file #24796, file #24797, file #24798)

Steve White <Stevan_White>
Project AdministratorIn charge of this item.
Tue 10 Jan 2012 05:55:30 PM UTC, original submission:

(This was regarding a posting I made on the XeTeX mailing list.
Bhutex wrote me privately.)

Steve White <Stevan_White>
Project AdministratorIn charge of this item.

 

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach File(s):
   
   
Comment:
   

Attached Files
file #24796:  bugs_lines.html added by Stevan_White (706B - text/html)
file #24797:  bugs in hindi font.pdf added by Stevan_White (35KiB - application/unknown)
file #24795:  bugs in hindi font.docx added by Stevan_White (12KiB - application/vnd.openxmlformats-officedocument.wordprocessingml.document)

 

Depends on the following items: None found

Items that depend on this one: None found

 

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    Follow 9 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Thu 03 May 2012 03:52:16 PM UTCStevan_WhiteStatusFix posted=>Fixed
      Open/ClosedOpen=>Closed
    Sun 04 Mar 2012 01:39:38 PM UTCStevan_WhiteStatusProceeding=>Fix posted
    Wed 25 Jan 2012 11:12:53 AM UTCStevan_WhiteSummaryFreeSans Devanagari lookup problems.=>Devanagari lookup problems
    Tue 10 Jan 2012 06:16:33 PM UTCStevan_WhiteAttached File-=>Added bugs_lines.html, #24796
      Attached File-=>Added bugs in hindi font.pdf, #24797
      Attached File-=>Added bug_lines_FireFox.jpeg, #24798
    Tue 10 Jan 2012 05:55:30 PM UTCStevan_WhiteAttached File-=>Added bugs in hindi font.docx, #24795
      Carbon-Copy-=>Added -unavailable-

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