On Sun, 4 Jan 2009 21:34:18 +0530 "Nirbheek Chauhan" <nirbheek.chau...@gmail.com> wrote: > How about this: > > New syntax Expanded syntax > Extension of > -------------------------------------------------------------------------------------------------------- > pkg[foo?bar] foo? ( cat/pkg[bar] ) !foo? ( cat/pkg ) > cat/pkg[foo?] > pkg[!foo?bar] foo? ( cat/pkg ) !foo? ( cat/pkg[bar] ) > cat/pkg[foo?] > pkg[foo=bar] foo? ( cat/pkg[bar] ) !foo? ( cat/pkg[-bar] ) > cat/pkg[foo=] > pkg[!foo=bar] foo? ( cat/pkg[-bar] ) !foo? ( cat/pkg[bar] ) > cat/pkg[!foo=] > > IMO, this is simple enough to understand, and use :)
It's utterly useless. Unlike the existing shortcut forms, what you're after isn't widely enough used to warrant its own shortcut. Use the expanded form and have done with it. -- Ciaran McCreesh
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