#6d6d6d — Public Fediverse posts

I just found some (to me) surprising behaviour with #ImageMagick #montage on #Fedora 43.

Assume A.png and B.png exist in the current folder.

Run this command:

montage -stroke lightblue A.png B.png -background black C.png

C.png now contains a montage of A.png and B.png

Change the background color like this:

montage -stroke lightblue A.png B.png -background #6d6d6d C.png

No errors are produced. Now reissue:

montage -stroke lightblue A.png B.png -background black C.png

This time, an error appears:

montage: no decode delegate for this image format `' @ error/constitute.c/ReadImage/746.

This took me an hour and a half to resolve.

I see clearly the shell programming mistake I made in the second command (although I didn't catch it because the parameters were actually constructed in #Python).

However, the final error indicates that IM processes parameters in a way that I did NOT expect. Is this just me?

I've raised it as a discussion here:

https://github.com/ImageMagick/ImageMagick/discussions/8572

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