pwhich: Cope with zero-length elements in $PATH.

diff --git a/pwhich b/pwhich
index 30d4c67cc8c724a9e483235b5b0e77c90390f087..ebb54c3aed93520b14ca87a0d92e5103bb7661d6 100755 (executable)
--- a/pwhich
+++ b/pwhich
@@ -14,7 +14,10 @@ for PROGRAM in "$@"; do
    ;;
   *)
    for ELEMENT in $PATH; do
-    if [ -x "$ELEMENT/$PROGRAM" ]; then
+    if [ -z "$ELEMENT" ]; then
+     ELEMENT=.
+    fi
+    if [ -f "$ELEMENT/$PROGRAM" ] && [ -x "$ELEMENT/$PROGRAM" ]; then
      printf '%s\n' "$ELEMENT/$PROGRAM"
      RET=0
      break