Re: Ghostscript fails with special characters in filename

[Reinhold Kainhofer]

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Hi Ian,

On Sunday 23 August 2009 13:20:17 Ian Hulin wrote:
> Hi Reinhold,
> I've tried your patch for ly:format and "~S" here.

The latest one which also escapes "?


> It looks like a filename with quoted characters will cause the
> compilation to hang:
[...]
> address@hidden:~/Desktop/Development/ExsultateTest$ $devlilypond
> --verbose \"Čača-file\".ly

verbose won't help us here, since it doesn't print the gs command 
executed. Can you add a line 
    (ly:message "gs command: ~a")
before the 
    (ly:system cmd)))
inthe file scm/backend-library.scm. This should cause lilypond to print 
out the exact gs command executed, so we can start debugging what gs or 
the shell doesn't like and what goes wrong. Here it seems to work...


> > Furthermore, your pseudocode to filter out any "problem characters"
> > will terribly break makefiles etc. since the output filename will no
> > longer be inputfilename.pdf and thus standard rules like:
> > %.pdf: %.ly
> >     lilypond $<
> > will fail.
>
> Not quite, % and  $< are make directives which get substituted for
> real names when make generates the actual command line.  

Exactly. The problem are not the special characters here, which will 
never be passed to lilypond, anyway.

The rule assumes, however, that the output file will be the exact same 
name as the input file. Your suggestion was to replace problematic 
characters by underscores, so the desired .pdf file will never be 
generated and each time make is called, it will again try to build that 
pdf file, which will never be generated.


Cheers,
Reinhold

- -- 
- ------------------------------------------------------------------
Reinhold Kainhofer, Vienna University of Technology, Austria
email: address@hidden, http://reinhold.kainhofer.com/
 * Financial and Actuarial Mathematics, TU Wien, 
http://www.fam.tuwien.ac.at/
 * K Desktop Environment, http://www.kde.org, KOrganizer maintainer
 * Chorvereinigung "Jung-Wien", http://www.jung-wien.at/
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