Bug 690007

s/thyus/thus

Note the patch 4267 attached to the bug to be applied before working on this 
bug, rather the problem persists without it. At this moment the patch is not 
committed due to gs/src reorganization.

The test file vert.gs8.51.ps is not attached to this bug report and I can't find it anywhere. There is no attachment to clarify what is meant by 'wrong glyph positions'.

I've tried the font batang.ttc and it looks OK to me. Closing the bug due to lack of information to reproduce the problem.

(In reply to comment #3)
> The test file vert.gs8.51.ps is not attached to this bug report and I can't
> find it anywhere. There is no attachment to clarify what is meant by 'wrong
> glyph positions'.
> 
> I've tried the font batang.ttc and it looks OK to me. Closing the bug due to
> lack of information to reproduce the problem.


The file vert.gs8.51.ps is apparently part of
http://bugs.ghostscript.com/attachment.cgi?id=1353
which was in
http://bugs.ghostscript.com/show_bug.cgi?id=688058

reopen bug for you to check, but feel free to close if it still proves uninformative.

As far as I can tell the problem here is that we are substituting a vertical font with a horizontal one, so its hardly surprising that the glyphs are vertically misplaced.

Unfortunately I don;t have a suitable vertical font to use as a substitute, but I believe that if such a font was used, the problem would not occur. In addition, the pdfwrite output is, as far as I can tell, the same as the rendered output, which is essentially whet we're aiming for with pdfwrite.

Two of the recent (a year old?) bugs I filed is about wrong rotated quote marks in vertical writing. There is a suitable font in there (the IPA ones).

Also, another poster to one of those reports posted a patch for freetype to use the special sfnt v* tables for truetype fonts in vertical layouts.

(In reply to comment #6)
> Two of the recent (a year old?) bugs I filed is about wrong rotated quote
> marks in vertical writing. There is a suitable font in there (the IPA ones).

Hmm, I'll see if I can find one.

I've gone through all the bug reports in Bugzilla which you have raised against Ghostscript (open or closed) which results in 107 reports. Of those only one seems to deal with rotated punctuation and there is no font attached, just a PDF file with a non-embedded CID font.

Obviously I could have missed it, but I think my point at the end of this post says it all really.


> Also, another poster to one of those reports posted a patch for freetype to
> use the special sfnt v* tables for truetype fonts in vertical layouts.

Well that would require FreeType to be modified, we prefer to ship a standard one. If you can get the patch into FreeType then maybe we can use the additional metrics, but I cannot promise anything. 

Note that the file doesn't use composefont or anything, it just uses a *font* called Ryumin-Light-V which isn't a standard CMap name either, so the only way this is going to work, as far as I can tell, is if you create a substitute font, using a vertical layout font or CIDFont, and map it to Ryumin-Light-V.

I'm not inclined to keep this bug alive, as *none* of the information required to investigate it is attached to the bug report. Sifting through old closed bug reports to find bits from here and bits from there to try and assemble a coherent report is too challenging.

If there is a genuine problem I'd rather see a new bug report for it.

(In reply to comment #7)
> (In reply to comment #6)
> > Two of the recent (a year old?) bugs I filed is about wrong rotated quote
> > marks in vertical writing. There is a suitable font in there (the IPA ones).
> 
> Hmm, I'll see if I can find one.


IIRC, I closed them because a) not embedding CIDFonts is really, *really* stupid if you expect the document to display correctly, and b) I don't think we should go down the road of shipping a CID font substitute for every CJK (and other!) ordering that we might encounter.