[Poppler-bugs] [Bug 11413] Poppler can't display Japanese text correctly.

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=11413





------- Comment #17 from sho at bbr.jp  2007-12-11 06:43 PST -------
(In reply to comment #15)
> (In reply to comment #14)
> > I've come across another possible regression caused by this patch.
> > 
> > Around GfxFont.cc:1879 there is a comment that states:
> >         // fall-through, assuming the Identity mapping -- this appears
> >         // to match Adobe's behavior
> > 
> > This causes pdf's that use the Adobe-Japan mapping to fall-through when the
> > mapping file from the poppler-data package is not around. Falling through,
> > instead of erroring causes the identity mapping to be used which is obviously
> > not correct. 
> > 
> > Do you have any pdf's that rely on the fall-through behaviour? Perhaps known
> > mappings should cause an error and only unknown mappings fall through? i.e.
> > Adobe-Japan causes an error even if the .cidToUnicode file is not around.
> > 
> > What do you think? 
> > 
> 
> This code is to get toUnicode map. toUnicode map is not mandatory.
> And identity mapping may be correct.
> 
> When embedded font is used, neither CMap nor toUnicode map is needed.
Sorry I missed.
   When embedded font and Identity mapping are used.

> Attached A.pdf can be displayed without language pack if it falls through.
> So, falling through is better here.
> 


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