configure.ac: fix PED_MINOR_VERSION sed expression

diff --git a/configure.ac b/configure.ac
index d87dbdb..f0f75cd 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -29,7 +29,7 @@ dnl set PED_BINARY_AGE _and_ PED_INTERFACE_AGE to 0.
 # Derive these numbers from $PACKAGE_VERSION, which is set
 # when autoconf creates configure (see AC_INIT, above).
 PED_MAJOR_VERSION=`echo "$PACKAGE_VERSION"|sed 's/\..*//'`
-PED_MINOR_VERSION=`echo "$PACKAGE_VERSION"|sed 's/^[0-9][0-9]*\.//;s/\..*//'`
+PED_MINOR_VERSION=`echo "$PACKAGE_VERSION"|sed 's/^[[0-9]][[0-9]]*\.//;s/\..*//'`
 case $PACKAGE_VERSION in
   *.*.*.*.*)
     PED_MICRO_VERSION=`echo "$PACKAGE_VERSION" \