From: Tomi Ollila <tomi.ollila@iki.fi>
Date: Tue, 23 May 2017 18:54:24 +0000 (+0300)
Subject: test-lib.sh: add "atexit" functionality
X-Git-Tag: 0.25_rc0~69
X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=commitdiff_plain;h=eb157f8841b93a0df241b815e30ac54ca81cc83d;hp=eb157f8841b93a0df241b815e30ac54ca81cc83d

test-lib.sh: add "atexit" functionality

New function at_exit_function registers given function to be called
at script termination.

Functions so registered are called in the reverse order of their
registration; no arguments are passed.

Function is called only once; re-adding with function name already
registered will remove previous registration.

New function rm_exit_function can be used to remove registration.

Modules (and possibly test-lib.sh functions) in future commits will
register such functions.
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