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From: Duncan <1i5t5.duncan@cox.net>
Subject: [gentoo-dev] Re: Add Hooks to Eselect
Date: Mon, 21 Aug 2023 00:15:08 -0000 (UTC)
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Redjard posted on Fri, 18 Aug 2023 21:38:37 +0200 as excerpted:

> From: Redjard <eselect.patches.gentoo@redjard.org>
> 
> Add Hooks to Eselect
> 
> For example for "eselect kernel list" the script
> /etc/eselect/hooks/kernel/list/pre is called before the eselect acts,
> and /etc/eselect/hooks/kernel/list/post afterwards.

Suggestion: A more flexible approach would make pre/post directories, such 
that "any" file therein (exceptions for backups, etc) would be sourced.

In run_hook something like (as written assumes bashisms OK, didn't verify 
if that's valid for eselect or not):

local action=$1
local subaction=$2
local hookscriptdir=$3

for $hookfile in
	/etc/eselect/hooks/${action}/${subaction}/${hookscriptdir}/*
do [[
		# maybe skip either the executable or README test?
		# or perhaps only match *.sh filenames instead
		# to reflect the in-shell sourcing?
		-x $hookfile &&
		$hookfile == ${hookfile#README} &&
		$hookfile == ${hookfile#.} &&
		$hookfile == ${hookfile%.bak} &&
		$hookfile == ${hookfile%\~}
	]] && source "$hookfile"
done


-- 
Duncan - List replies preferred.   No HTML msgs.
"Every nonfree program has a lord, a master --
and if you use the program, he is your master."  Richard Stallman