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where to report bugs for ghostscript?

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  where to report bugs for ghostscript? Jinsong Zhao <jszhao@yeah.net> - 2016-12-06 21:32 +0800
    Re: where to report bugs for ghostscript? Carlos <angus@quovadis.com.ar> - 2016-12-06 15:33 +0100
      Re: where to report bugs for ghostscript? ken <ken@spamcop.net> - 2016-12-06 15:48 +0000

#2962 — where to report bugs for ghostscript?

Hi there,

I have encountered a bug (may be not) in ghostscript 9.20. It relates to 
Chinese characters.

I produced a postscript document (.ps) from LaTeX, and then converted it 
to a PDF document (.pdf). With ghostscript 9.16 or ghostscript 9.18, I 
can get a PDF document in which the text could be copied and pasted 
correctly. However, with ghostscript 9.20, the text that copied from the 
PDF file were not Chinese, something like  इଅค̇ ࠅഅਇคค ؇ଅइ.

Anyone here could tell me where and how to report a bug with this?

Any suggestion will be really appreciated.

Best,
Jinsong

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#2963

On 06/12/2016 14:32, Jinsong Zhao wrote:
> Hi there,
>
> I have encountered a bug (may be not) in ghostscript 9.20. It relates
> to Chinese characters.
>
> I produced a postscript document (.ps) from LaTeX, and then converted
> it to a PDF document (.pdf). With ghostscript 9.16 or ghostscript
> 9.18, I can get a PDF document in which the text could be copied and
> pasted correctly. However, with ghostscript 9.20, the text that
> copied from the PDF file were not Chinese, something like इଅค̇ ࠅഅਇคค
> ؇ଅइ.
>
> Anyone here could tell me where and how to report a bug with this?
>
> Any suggestion will be really appreciated.
>
> Best,
> Jinsong

Maybe at http://bugs.ghostscript.com/ ?

(It looks you have to create an account first.)

-- 

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#2964

In article <o26i5s$ic5$1@dont-email.me>, angus@quovadis.com.ar says...

> > I produced a postscript document (.ps) from LaTeX, and then 
converted
> > it to a PDF document (.pdf). With ghostscript 9.16 or ghostscript
> > 9.18, I can get a PDF document in which the text could be copied and
> > pasted correctly. However, with ghostscript 9.20, the text that
> > copied from the PDF file were not Chinese, something like ???? ?????
> > ???.

You can never guarantee getting text out of a PDF file, especially when 
it is converted from PostScript.

The only way to guarantee getting reliable text from a PDF file is if it 
has a ToUnicode CMap. Creating one of those requires knowing which 
character codes map to what Unicode code points, and there is no 
mechanism for doing that in PostScript.

There are various heuristics for attempting to work  around this, but 
they are no 100% reliable.

Note that you should probabl;y try the current code, there have been 
some changes since the release of 9.20. For example, this commit

http://git.ghostscript.com/?
p=ghostpdl.git;a=commit;h=a8642064fe21752b00e28d05483baca029fe0891

looks relevant.

> >
> > Anyone here could tell me where and how to report a bug with this?
> >
> > Any suggestion will be really appreciated.
> >
> > Best,
> > Jinsong
> 
> Maybe at http://bugs.ghostscript.com/ ?

That is correct
 
> (It looks you have to create an account first.)

Indeed you do.

We have occasionally had problems with people who think its clever to 
try and hack the server by uploading malicious attachments, or spam 
Bugzilla with advertising etc.

So we insist on an email address, and then we simply cut off offenders.

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