[Rpm-maint] [rpm-software-management/rpm] Remove TOK_IDENTIFIER support from expression parsing (#840)

Michael Schroeder notifications at github.com
Tue Sep 17 15:42:54 UTC 2019

The problem is that many people do not know that `%var != string` is not valid syntax. Even Panu used `a!=b` in the test suite. I prefer ripping out the code because the currently only `[a-zA-Z][a-zA-Z0-9]*` is supported (it's supposed to match an identifier, but note the missing `_`) and thus it will confuse people.

If we decide to keep the functionality for backwards compatibility, I'll do a different patch that also removes TOK_IDENTIFIER but instead directly generates TOK_STRING without calling rpmExpand().

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