[OS X TeX] Carbon Emacs settings.

[Andrea Riciputi]

Hi,
I was looking at the Carbon Emacs settings for the "View" commands (in 
the file site-start.el) when I realized that it would be improved by 
replacing the actual viewing script:

(concat "dvipdf " tex-file ".dvi " tex-file ".pdf ; "
pdf-previewer-program " " tex-file ".pdf"))

with a smarter:

(concat " if[ " tex-file ".pdf -ot " tex-file ".dvi ]; then dvipdf "
tex-file ".dvi " tex-file ".pdf ; "
pdf-previewer-program " " tex-file ".pdf; else "
pdf-previewer-program " " tex-file ".pdf "))

the resulting shell script would be:

if [file.pdf -ot file.dvi]; then dvipdf file.dvi file.pdf; open -a 
'Preview' file.pdf; else open -a 'Preview' file.pdf; fi

In this way dvipdf is only called when necessary making viewing files 
quicker when possible. Now when I try the script from the shell it 
works perfectly but when I try it from within emacs I get the following 
error message:

/bin/sh: -c: line 1: syntax error near unexpected token `then'
/bin/sh: -c: line 1: ` if[ prova.pdf -ot prova.dvi ]; then dvipdf 
prova.dvi pro\va.pdf ; open -a 'Preview' prova.pdf; else open -a 
'Preview' prova.pdf 'View exited abnormally with code 2 at Mon Apr 26 
22:10:38

I can imagine there is somthing wrong in quoting and I've tried many 
different variants without success (well I'm not so good at shell 
programming!). Anyone can help me?

Thanks in advance,
	Andrea.

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