Module aliases (modinfo -F alias <module>) may contain special characters
that rpm does not allow in dependencies, such as commas. Encode those as
%XX to avoid generating broken dependencies.

Signed-off-by: Andreas Gruenbacher <agruen@suse.de>

--- scripts/find-supplements.ksyms.orig
+++ scripts/find-supplements.ksyms
@@ -35,10 +35,26 @@ combine_modaliases() {
     print_modaliases "$class" "$variants" "$pos"
 }
 
+# Encode all characters other than [*:a-zA-Z0-9] in stdin as %XX.
+# (This includes the % character itself, which becomes %25.)
+hexenc() {
+    local line hex
+
+    while read line; do
+            set -- "" "$line"
+            while [[ "$2" =~ ([*:a-zA-Z0-9]*)([^*:a-zA-Z0-9])(.*) ]]; do
+                hex=$(echo -n "${BASH_REMATCH[2]}" | hexdump -e '"%X"')
+                set -- "$1${BASH_REMATCH[1]}%$hex" "${BASH_REMATCH[3]}"
+            done
+            echo "$1$2"
+    done
+}
+
 for module in $(grep -E '/lib/modules/.+\.ko$' | grep -v '/lib/modules/[^/]*/kernel/'); do
     vermagic=$(/sbin/modinfo -F vermagic "$module")
     krel=${vermagic%% *}
     /sbin/modinfo -F alias "$module" \
+    | hexenc \
     | sed -nre "s,(.+:.+),modalias(kernel-${krel##*-}:\\1),p"
 done \
 | sort -u \