commit:     f24dd0d9808559571509add2c8c69c1bcb2bfec6
Author:     Kerin Millar <kfm <AT> plushkava <DOT> net>
AuthorDate: Sun Jun 25 20:03:04 2023 +0000
Commit:     Sam James <sam <AT> gentoo <DOT> org>
CommitDate: Mon Jul  3 20:18:37 2023 +0000
URL:        https://gitweb.gentoo.org/proj/portage.git/commit/?id=f24dd0d9

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.

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 | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/bin/save-ebuild-env.sh b/bin/save-ebuild-env.sh
index bba468da1..20cd86866 100644
--- a/bin/save-ebuild-env.sh
+++ b/bin/save-ebuild-env.sh
@@ -83,8 +83,12 @@ __save_ebuild_env() {
        ___eapi_has_usex && unset -f usex
 
        # Clear out the triple underscore namespace as it is reserved by the PM.
-       unset -f $(compgen -A function ___)
-       unset ${!___*}
+       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 \

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