[GRASS-dev] formatting expressions for r.mapcalc in GRASS6.4.3

[Glynn Clements]

Markus Neteler wrote:

> > gui/wxpython/core/utils.py has:
> >
> >         def split(s):
> >             """!Platform spefic shlex.split"""
> >             if sys.version_info >= (2, 6):
> >                 return shlex.split(s, posix = (sys.platform != "win32"))
> >             elif sys.platform == "win32":
> >                 return shlex.split(s.replace('\\', r'\\'))
> >             else:
> >                 return shlex.split(s)
> >
> > However: shlex.split(..., posix=False) will retain any quotes, while
> > posix=True removes them:
> >
> >         > shlex.split('a "b c"')
> >         ['a', 'b c']
> >         > shlex.split('a "b c"', posix=False)
> >         ['a', '"b c"']
> >
> > With posix=False, there doesn't appear any way to prevent splitting on
> > whitespace without also adding quotes.
> >
> > From the above code, it appears that posix=False is used on Windows so
> > that backslash characters in filenames are treated as literal
> > backslashes rather than as escape characters. If that's the only
> > reason, then removing the "if" case may suffice.
> 
> I don't know exactly how let our guest test that...

Tell them to modify utils.py as described above, or provide them with
a modified version.

-- 
Glynn Clements <glynn at gclements.plus.com>