libmakepkg/lint_pkgbuild: fix regression in linting depends=(foo=$epoch:$pkgver-$pkgrel)

In commit 91b72cc386ca03241791748da5da2b150c724ace support was added for
linting depends/etc. to ensure they contain only valid dependency
specifiers. However it did not properly take into account the
possibility of dependencies linked to a specific pkgrel or epoch, which
promptly failed to build because "-" and ":" is not allowed in a pkgver.

pkgrel is something supported by pacman and useful for e.g. split packages
which cannot be mismatched even if the pkgver is the same. Fix by
removing an optional suffixed "-$decimal" when checking for a valid
pkgver.

epoch is kind of difficult to do without :D so likewise fix by removing
an optional prefixed "$integer:"

Signed-off-by: Eli Schwartz <eschwartz@archlinux.org>
Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/scripts/libmakepkg/lint_pkgbuild/depends.sh.in b/scripts/libmakepkg/lint_pkgbuild/depends.sh.in
index f17bc545..d90a15f8 100644
--- a/scripts/libmakepkg/lint_pkgbuild/depends.sh.in
+++ b/scripts/libmakepkg/lint_pkgbuild/depends.sh.in
@@ -43,10 +43,12 @@ lint_depends() {
 
 	for depend in "${depends_list[@]}"; do
 		name=${depend%%@(<|>|=|>=|<=)*}
-		ver=${depend#*@(<|>|=|>=|<=)}
+		# remove optional epoch in version specifier
+		ver=${depend##$name@(<|>|=|>=|<=)?(+([0-9]):)}
 		lint_one_pkgname depends "$name" || ret=1
 		if [[ $ver != $depend ]]; then
-			check_pkgver "$ver" depends || ret=1
+			# remove optional pkgrel in version specifier
+			check_pkgver "${ver%-+([0-9])?(.+([0-9]))}" depends || ret=1
 		fi
 	done