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[Bug 472978] Re: Save to pgm actually saves to pnm

 

Apparently PIL saves PGM internally as PPM unless you convert the image
to grayscale first. Add proper check for format to fix the issue
(perhaps to imtools save?).

Here's a test case I used to verify this behavior:
from Image import open

im = open('Lenna.png')

gim = im.convert('L')
gim.save('Lenna1.pgm')
im.save('Lenna2.pgm')
im.save('Lenna3.ppm')

-- 
Save to pgm actually saves to pnm
https://bugs.launchpad.net/bugs/472978
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Status in Phatch = Photo & Batch!: Incomplete
Status in “phatch” package in Ubuntu: Incomplete

Bug description:
Binary package hint: phatch

When i save to PGM format, it actually saves to PNM. Being PGM a grayscale format it would be very usefull we could save directly to PGM instead of PNM.