libmakepkg: check if PACKAGER has the expected format for WKD lookup

pacman should be able to extract an email address from PACKAGER for WKD
lookup, so issue a warning if it is not of the form
"Example Name <email@address.invalid>". Neither the name nor the email
address must contain additional angle brackets.

Signed-off-by: Jonas Witschel <diabonas@archlinux.org>
Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/scripts/libmakepkg/lint_config/variable.sh.in b/scripts/libmakepkg/lint_config/variable.sh.in
index 55ed6d6d..b0b731dd 100644
--- a/scripts/libmakepkg/lint_config/variable.sh.in
+++ b/scripts/libmakepkg/lint_config/variable.sh.in
@@ -60,5 +60,11 @@ lint_config_variables() {
 		fi
 	done
 
+	# pacman should be able to extract an email address from PACKAGER for WKD key lookup
+	local match='^([^<>]+ )?<[^<>]*>$'
+	if ! [[ $PACKAGER =~ $match ]]; then
+		warning "$(gettext "PACKAGER should have the format 'Example Name <email@address.invalid>'")"
+	fi
+
 	return $ret
 }