lint-version: check reverts

common/scripts/lint-version-change

@@ -73,6 +73,32 @@ reverts_on_downgrade() {
 	esac
 }
 
+check_revert() {
+	for vr in $reverts; do
+		xbps-uhelper cmpver "${vr%_*}" "${version}"
+		case "$?" in
+		0)
+			scan '^version=' 'in $reverts'
+			status=1
+			;;
+		1)
+			scan '^version=' 'remove from $reverts'
+			status=1
+			;;
+		esac
+	done
+	for vr in $prev_reverts; do
+		if ! xbps-uhelper cmpver "$version" "${vr%_*}"; then
+			continue
+		fi
+		if [ $revision -gt "${vr##*_}" ]; then
+			continue
+		fi
+		scan '^revision=' "undo a revert with same revision as before"
+		status=1
+	done
+}
+
 version_change() {
 	version="$(show_template_var "$tip_rev" version)"
 	revision="$(show_template_var "$tip_rev" revision)"
@@ -84,6 +110,7 @@ version_change() {
 		1) revision_reset;;
 		-1|255) reverts_on_downgrade;;
 	esac
+	check_revert
 }
 
 version_change