Johannes Altmanninger 0afc5258cf Unify detection of fish version upgrade with $__fish_initialized
This variable holds an integer that resembles the fish version up to
that initializations were performed. It should be incremented whenever
some new initialization is required after upgrading fish.  This should
not change the behavior for existing fish installations, except for a
minor message on installations that upgrade from fish<2.3.0.

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2019-12-30 14:00:22 +01:00
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