lilypond-book doesn't work in Windows

[Mats Bengtsson]

The lilypond-book command doesn't work in Windows XP (mingz). I find 
this a release-stopper even though the same problem existed already in 
version 2.6.

I've spent a few minutes debugging the problems and so far I have found 
the following problems:

- The redirect          redirect = ' 1>/dev/null 2>' + error_log_file
 done in system(...) in lilylib doesn't work at all in Windows.
 You can avoid this bug by calling lilypond-book with --verbose.  The 
question is if we can even skip the error log reporting
 as a temporary workaround.

- For some reason, I get
 File "C:\Program Files\LilyPond\usr\bin\lilboook.py", line 1414, in 
get_latex_
textwidth
   os.unlink (tmpfile)
OSError: [Errno 13] Permission denied: 
'c:\\docume~1\\mabe\\locals~1\\temp\\tmpm
i60lv.tex'
 I tried changing the code so that the tmpfile was located in CWD, but still
 get the same error message. Once lilypond-book has finished, I can 
remove  the file without problems (even from within Python using 
os.unlink), so  I don't understand why Windows refuses to remove the 
file at this stage
 in the program.

- Commenting out the os.unlink(tmpfile), I got a bit further, but  the 
program fails with

Converting to `lily-1281099914.eps.pdf'...
error: failed files: "Documents\\lily' Settings\\mabe\\My and"

lilboook.py: error: Process lilypond -b eps -I  'C:\Documents and 
Settings\mabe\
My Documents\lily' snippet-map.ly lily-1158580316 lily-577093479 
lily-1281099914
exited unsuccessfully.

 However, if I just rerun the same lilypond-book command once more, it
 finishes without any more complaints and I'm able to use latex and
 dvips from MikTeX to produce the desired output.

  /Mats