diff -r -u gentoolkit-0.2.4_pre7.orig/src/revdep-rebuild/revdep-rebuild gentoolkit-0.2.4_pre7/src/revdep-rebuild/revdep-rebuild
--- gentoolkit-0.2.4_pre7.orig/src/revdep-rebuild/revdep-rebuild	2008-01-29 10:13:53.000000000 -0800
+++ gentoolkit-0.2.4_pre7/src/revdep-rebuild/revdep-rebuild	2008-01-29 10:15:36.000000000 -0800
@@ -38,7 +38,7 @@
 	echo
 	echo "  -X, --package-names  Emerge based on package names, not exact versions"
 	echo "      --library NAME   Emerge existing packages that use the library with NAME"
-	echo "      --library=NAME   NAME can be a full path to the library or a basic"
+	echo "      --library=NAME   NAME can be a full path to the library or an extended"
 	echo "                       regular expression (man grep)"
 	echo " -np, --no-ld-path     Do not set LD_LIBRARY_PATH"
 	echo " -nc, --nocolor        Turn off colored output"
@@ -181,7 +181,7 @@
 
 PACKAGE_NAMES=false
 SONAME="not found"
-SONAME_GREP=grep
+SONAME_GREP="grep -E"
 SEARCH_BROKEN=true
 EXTRA_VERBOSE=false
 KEEP_TEMP=false
diff -r -u gentoolkit-0.2.4_pre7.orig/src/revdep-rebuild/revdep-rebuild-rewrite gentoolkit-0.2.4_pre7/src/revdep-rebuild/revdep-rebuild-rewrite
--- gentoolkit-0.2.4_pre7.orig/src/revdep-rebuild/revdep-rebuild-rewrite	2008-01-29 10:13:53.000000000 -0800
+++ gentoolkit-0.2.4_pre7/src/revdep-rebuild/revdep-rebuild-rewrite	2008-01-29 11:07:55.000000000 -0800
@@ -147,7 +147,7 @@
       --no-util=UTIL   UTIL can be one of portage-utils or pkgcore
                        or it can be a *quoted* space-delimited list.
   -L, --library NAME   Emerge existing packages that use the library with NAME
-      --library=NAME   NAME can be a full path to the library or a basic
+      --library=NAME   NAME can be a full path to the library or an extended
                        regular expression (man grep)
 
 Calls emerge, all other options are used for it (e. g. -p, --pretend).
@@ -540,10 +540,10 @@
 				ldd_status=$? # TODO: Check this for problems with sort
 				# HACK: if LD_LIBRARY_MASK is null or undefined grep -vF doesn't work
 				if grep -vF "${LD_LIBRARY_MASK:=$'\a'}" <<< "$ldd_output" |
-					grep -q "$SONAME_SEARCH"; then
+					grep -qE "$SONAME_SEARCH"; then
 					if [[ $SEARCH_BROKEN && $FULL_LD_PATH ]]; then
 						if LD_LIBRARY_PATH="$COMPLETE_LD_LIBRARY_PATH" ldd "$target_file" 2>/dev/null |
-							grep -vF "$LD_LIBRARY_MASK" | grep -q "$SONAME_SEARCH"; then
+							grep -vF "$LD_LIBRARY_MASK" | grep -qE "$SONAME_SEARCH"; then
 							# FIXME: I hate duplicating code
 							# Only build missing direct dependencies
 							MISSING_LIBS=$(
@@ -564,8 +564,8 @@
 						# FIXME: I hate duplicating code
 						# Only rebuild for direct dependencies
 						MISSING_LIBS=$(
-							expr="/$SONAME_SEARCH/s/^[[:space:]]*\([^[:space:]]*\).*$/\1/p"
-							sort -u <<< "$ldd_output" | sed -n "$expr"
+							expr="/$SONAME_SEARCH/s/^[[:space:]]*([^[:space:]]*).*$/\1/p"
+							sort -u <<< "$ldd_output" | sed -r -n "$expr"
 						)
 						REQUIRED_LIBS=$(
 							expr='s/^[[:space:]]*NEEDED[[:space:]]*\([^[:space:]]*\).*/\1/p';