Problem with while() inside -format

[SafetyCar]

Hi, I'm having a problem using while() inside -format. I'm using ImageMagick through COM so the code is a little weird to paste exactly so, summarizing...

Something like this works:

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convert FILEPATH -format %[fx:abc=3;while(abc<3){abc=abc+1;};abc] info:

But this makes the program freeze:

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convert FILEPATH -format %[fx:abc=3;while(abc<4){abc=abc+1;};abc] info:

It's like the variable is not incremented. I was thinking of posting as a bug but wanted to check first.

[magick]

Refer to the FX docs. The correct syntax is while(condition,expression):

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convert wizard: -format '%[fx:abc=3;while(abc<4,abc=abc+1);abc]' info:

[SafetyCar]

Whoops... thanks, I don't know how I missed that.

[SafetyCar]

@magick Sorry again but I'm trying more things...

And this code is always executed at least once (outputting 15):

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-format %[fx:abc=5;while(abc<0,abc=abc+10);abc]

[magick]

Thanks for the problem report. We can reproduce it and will have a patch to fix it in GIT master branch @ https://github.com/ImageMagick/ImageMagick later today. The patch will be available in the beta releases of ImageMagick @ https://www.imagemagick.org/download/beta/ by sometime tomorrow.

[SafetyCar]

Seems to be working as expected now.