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Francois-Rene Rideau authored
* dynamically call 'foo a few places where #'foo was statically used. * a new function parse-version does parsing of a version string into a list of integers, or NIL if invalid * remove redundant first argument to register-system. * refactor the find-system protocol so finder functions may return a system object instead of a pathname, and use it for our fallback system function. * separate a function perform-plan out of the default operate method. * treat asdf upgrade specially when it is required by the plan. * introduce function upgrade-asdf that returns T when the ASDF version changed, * reinstate obsolete function system-definition-pathname as a cerror'ing alias for system-source-file.
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