We wrote a bit today about this.
My searches showed several 2.2 gamma icc files and discussion about
printing black-white photographs which also said 2.2.
Today, using the string Mike mentioned I found one sGray.icc which is
not a 2.2, but most still match gs's.
Since I brought it up, I will create one for cups-filters, using the
sRGB curve.
I *think* this works: (verification appreciated)
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-JimC
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James Cloos <cloos at jhcloos.com> OpenPGP: 0x997A9F17ED7DAEA6