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Adrian Likins authored
*plug-ins/ edge.c added a check so it woudlnt segfault when passed a non-existend drawable threshold_alpha added a non-interactive mode *app/brightness_contrast.c app/color_balance.c app/colormaps.c app/curves.c app/hue_saturation.c app/posterize.c app/threshold.c -added a check so it wouldnt except a indexed drawable. This was previosly possible via the pdb. -adrian
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