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-rw-r--r--doc/language.txt5
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+- Normally variable names should be like C-identifiers plus '.'. In
+ particular, in simple expansion (i.e., $package-$version) we assume
+ characters [/-] end the name. But this can be overrident with paren-
+ expansion (i.e., $(package-version)). In assignment we always use
+ full name until space, '=', or '=+'.