From 4e24ee218c18fc05d9b87f70612a390d7d38ef4c946ee03872ec175a8c06cfed Mon Sep 17 00:00:00 2001
From: Thomas Oettli <spacefreak@noop.ch>
Date: Sat, 22 Aug 2026 06:17:51 +0200
Subject: [PATCH] send usage to stderr on error paths

---
 pbc | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/pbc b/pbc
index 587efde..2bb4621 100755
--- a/pbc
+++ b/pbc
@@ -221,7 +221,7 @@ while (( $# > 0 )); do
       -c|--config)
         cfgfile=$1
         shift
-        [ -z "$cfgfile" ] && usage && exit 255
+        [ -z "$cfgfile" ] && echo "Error: missing argument for $opt" >&2 && usage >&2 && exit 255
       ;;
       -h|--help)
         usage
@@ -232,8 +232,8 @@ while (( $# > 0 )); do
       ;;
       -*)
         echo "Error: invalid option: $opt" >&2
-        echo
-        usage
+        echo >&2
+        usage >&2
         exit 255
       ;;
       *)
@@ -247,14 +247,14 @@ while (( $# > 0 )); do
       ;;
       -*)
         echo "Error: invalid option: $opt" >&2
-        echo
-        usage
+        echo >&2
+        usage >&2
         exit 255
       ;;
       *)
         echo "Error: invalid argument: $opt" >&2
-        echo
-        usage
+        echo >&2
+        usage >&2
         exit 255
       ;;
     esac