possible bug %b IM 6.9.5.10 Q16 Mac OSX

[fmw42]

I am getting 0B result from the following

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convert -size 1000x1000 gradient:blue-red -format "%b" info:

0B

Whereas:

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convert -size 1000x1000 gradient:blue-red miff:- | convert - -format "%b" info:

6MB

Is this a bug or just a fact that I have not specified any output format in the first command?

[snibgo]

The doc http://www.imagemagick.org/script/escape.php says %b is "file size of image read in". In your first example, no file was read in.