#14 popen fails on win98

[jeff putnam]

On windows 98 with python 2.3b1 curator failes to
identify the sizes of files. Chasing this down I've
discovered that using popen to get the output from
"identify -format" fails for me. I have no idea why.
Similarly popen on "identify" with no flags fails. It
looks like it might be some kind of output buffer
flushing problem, but I don't know enough about Windows
(being a Unix user by choice) to understand.

A few clues....

Adding "\n" and "\r" to the end of the output format
string do not seem to have had any effect.

Running a "convert" works fine - so the program is
evidently completing ok.

I did have to double the "%" signs in the format string
to get "system('identify -format...')" to work correctly.

Artificially lengthening the format string by adding
junk to it didn't change anything.

"identify -verbose" gets the result through to the
popen fine.

Workaround :

Since "identify -verbose" works fine in the popen I'm
doing that and looking for the "Geometry: " string in
the output with an re.compile("Geometry:....").