X-Git-Url: https://git.distorted.org.uk/~mdw/cfd/blobdiff_plain/cac38f7fe315b2869985b49beaca4677c568b853..282625e1b87743236f1cb8c70c2762edd413c6b0:/confsubst.in

diff --git a/confsubst.in b/confsubst.in
index 86c8bb0..f9ba37b 100755
--- a/confsubst.in
+++ b/confsubst.in
@@ -75,11 +75,10 @@ file=$1; shift
 subst=""
 for fixup; do
   case "$fixup" in
-    *?=*?) ;;
+    *?=*) ;;
     *) echo >&2 "$0: bad substitution: $fixup"; exit 1 ;;
   esac
-  tag=$(echo "$fixup" | sed 's/=.*$//') && \
-  value=$(echo "$fixup" | sed 's/^[^=]*=//') && \
+  tag=${fixup%%=*} value=${fixup#*=}
   subst="$subst s@$tag@$valueg;"
 done