inversion-test

inversion-test is a compiled Lisp function in `inversion.el'.

(inversion-test PACKAGE MINIMUM &rest RESERVED)

Test that PACKAGE meets the MINIMUM version requirement.
PACKAGE is a symbol, similar to what is passed to `require'.
MINIMUM is of similar format to return entries of
`inversion-decode-version', or a classic version string.
RESERVED arguments are kept for a later user.
This depends on the symbols `PACKAGE-version' and optionally
`PACKAGE-incompatible-version' being defined in PACKAGE.
Return nil if everything is ok. Return an error string otherwise.