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Kenny Goers feature request
Good catch, for those on the cc here, the issue is that we re-compress png files _every_ time we build for the device on MT. The fix here is to not use the Optimize iOS Package batch itself and instead, make the individual calls to compress, etc. ourselves.
Currently after we finish compiling a device build, we pass it to Apple's iphoneos-optimize tool. This finds all the pngs in the app and calls pngcrush to optimize them for the device, and finds all plists and converts them to binary.
What we need to to is to perform these tasks directly when copying the resource into the app bundle - call pngcrush and plutil directly. For the merged plist we could write it directly as binary.
This will probably happen after we migrate the build to xbuild, since that makes dependency tracking much easier.
*** This bug has been marked as a duplicate of bug 1587 ***