diff -Nru autospec-1.4.7/lib/libapse.lib.in autospec-1.4.7.patched/lib/libapse.lib.in
--- autospec-1.4.7/lib/libapse.lib.in	2009-07-05 19:23:29.000000000 +0200
+++ autospec-1.4.7.patched/lib/libapse.lib.in	2009-07-12 14:16:29.000000000 +0200
@@ -319,19 +319,24 @@
 
       local pcknameregexp=$(echo $pcknameverbatim | sed "\
             s,%[{]*name[}]*,$specname,
-            s,%[{]*version[}]*,[A-Za-z0-9._]*,
-            s,%[{]*.*[}]*,[^[:space:]-]*,")
+            s,%[{]*version[}]*,\\\([A-Za-z0-9._]*\\\),
+            s,%[{]*.*[}]*,[A-Za-z0-9._]*,
+            s,\.gz$,.,
+            s,\.tgz$,.,
+            s,\.bz2$,.,
+            s,\.lzma$,.,")
 
       if [ $? -eq 0 ]; then
-         new_version=$(\
+
+         if [ "${pcknameregexp/(/}" = "${pcknameregexp}" ]; then
+            notify.warning "* "$"not parametric source0 name; cannot update"
+         else
+            new_version=$(\
 grep -i "$pcknameregexp" $fcurlout | \
 sed "\
-s,.*\($pcknameregexp\).*,\1,g
-s/\.[^0-9].*//               # remove trailing stuff (.tar.gz, ...)
-s/.*-\([0-9]*.*\)/\1/        # <pck_name>-<pck_ver>
-s/.*_\([0-9]*.*\)/\1/        # <pck_name>_<pck_ver>
-s/[^0-9]*\([0-9]\..*\)/\1/g  # <pck_name><pck_ver>" | \
+s,.*$pcknameregexp.*,\1,g" |
 sort -t. -n -r -k1 -k2 -k3 -k4 -k5 -k6 -k7 -k8 -k9 -k10 | head -n1)
+         fi
       fi
 
       if [ "$new_version" ]; then