Smart quote replacement in texi2pdf broken with nested @code and @warning / @w

[Reinhold Kainhofer]

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If I set 
  @set txicodequoteundirected
  @set txicodequotebacktick
in my texinfo file, I don't expect any quotes to be replaced by smart curly 
quotes. This works with texinfo and texinfo --html, but texi2pdf still 
replaces the quotes in some circumstances. In particular:

@address@hidden code inside w: c'}} produces a curly quote
@address@hidden w inside code: c'}} produces a straigth quote

Similarly, if we define a macro @warning and then call
@address@hidden inside warning macro: c''}}
the '' are turned into curly quotes.

Attached is a simple file to show the problem with texi2pdf.

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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apostrophe.texi
Description: Text document