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Fix for B&W pbm images with width not dividable by 8 #2481

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merged 6 commits into from Jun 25, 2023

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ynse01
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@ynse01 ynse01 commented Jun 21, 2023

Prerequisites

  • I have written a descriptive pull-request title
  • I have verified that there are no overlapping pull-requests open
  • I have verified that I am following the existing coding patterns and practice as demonstrated in the repository. These follow strict Stylecop rules 馃懏.
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Description

This fixes #2477 by handling Black & White binary images with a width not dividable by 8 correctly. The handling of the padding bits was incorrect and not according to the specification.

Thanks for reporting this bug !

@JimBobSquarePants
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Thanks so much for doing this @ynse01 !

The code looks great, however it doesn't look like the reference image was included in GIT LFS for some reason.

git lfs track --filename [file path]

Should do the trick.

I'd do it for you, but LFS doesn't work well with GitHub when pushing a file against a fork.

@JimBobSquarePants JimBobSquarePants added this to the v3.1.0 milestone Jun 23, 2023
@ynse01
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ynse01 commented Jun 24, 2023

I'd do it for you, but LFS doesn't work well with GitHub when pushing a file against a fork.

Please do so, as I tried the command locally and as a result I got modification in the .gitattributes file as a result. Doesn't look desirable, as the file extensions are already mentioned, so I didn't commit those modifications.

@JimBobSquarePants
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I just pulled your branch down and cut the file to see what git was saying. It looks like the GitHub UI was playing silly buggers because the image is definitely already tracked.

image

This looks great then. Thanks for your help!

@JimBobSquarePants JimBobSquarePants merged commit f88ec76 into SixLabors:main Jun 25, 2023
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Successfully merging this pull request may close these issues.

Images saved using Pbm Binary Byte format (P4) are corrupted.
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