[Pkg-gmagick-im-team] Bug#600139: mogrify does not respect +set date:create and +set date:modify

[H. S. Teoh]

Package: imagemagick
Version: 8:6.6.0.4-2.2
Severity: normal

Since about version 5 or so, imagemagick has started to always add
metadata fields to output files that support it. The date:create and
date:modify fields are always added to PNG files. This is problematic
when script-generated images are managed by SVN, because SVN always
finds a difference in the image files even though their content and
other non-volatile metadata are identical.

This behaviour can be suppressed in `convert` by specifying `+set
date:create +set date:modify`; the properties are not written to the
target file.

However, `mogrify`, which modifies the file in-place, does not appear to
respect this. It will ALWAYS set date:create and date:modify in the file
regardless of whether the +set options are specified. This is a bug.


T

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