[gentoo-commits] proj/portage:prefix commit in: bin/

["Sam James" <sam@gentoo.org>]

commit:     65b4a7839d11d6f2be0f0811bce8f66f06e40ca7
Author:     Kerin Millar <kfm <AT> plushkava <DOT> net>
AuthorDate: Sun Jun 25 20:16:51 2023 +0000
Commit:     Sam James <sam <AT> gentoo <DOT> org>
CommitDate: Mon Jul  3 20:19:31 2023 +0000
URL:        https://gitweb.gentoo.org/proj/portage.git/commit/?id=65b4a783

bin/save-ebuild-env.sh: refrain from using the compgen builtin

For the compgen builtin to be available requires that bash be compiled
with --enable-readline. Rather than rely on compgen to generate a list
of function names, parse their names out of declare -F instead. This
eliminates an unnecessary divergence from the master branch.

Specify -v for the following unset command, so that bash is coerced into
unsetting only variables, as is intended.

Expand the applicable variable names with "${!___@}". Owing to the
constraints placed on identifiers, it's not particularly important that
it be done this way, but I think it better expresses the intent.

Signed-off-by: Kerin Millar <kfm <AT> plushkava.net>
Bug: https://bugs.gentoo.org/909148
Signed-off-by: Sam James <sam <AT> gentoo.org>

 bin/save-ebuild-env.sh | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/bin/save-ebuild-env.sh b/bin/save-ebuild-env.sh
index 36eedc7fa..294cab255 100755
--- a/bin/save-ebuild-env.sh
+++ b/bin/save-ebuild-env.sh
@@ -82,13 +82,13 @@ __save_ebuild_env() {
 
 	___eapi_has_usex && unset -f usex
 
-	# BEGIN PREFIX LOCAL: compgen is not compiled in during bootstrap
-	if type compgen >& /dev/null ; then
-		# Clear out the triple underscore namespace as it is reserved by the PM.
-		unset -f $(compgen -A function ___)
-		unset ${!___*}
-	fi
-	# END PREFIX LOCAL
+	# Clear out the triple underscore namespace as it is reserved by the PM.
+	while IFS=' ' read -r _ _ REPLY; do
+		if [[ ${REPLY} == ___* ]]; then
+			unset -f "${REPLY}"
+		fi
+	done < <(declare -F)
+	unset -v REPLY "${!___@}"
 
 	# portage config variables and variables set directly by portage
 	unset ACCEPT_LICENSE BUILD_PREFIX COLS \