From 40917af009cf396a6cfe62d26a8395733aac5588 Mon Sep 17 00:00:00 2001
From: noctuid <noct@openmailbox.org>
Date: Sun, 31 Jan 2016 20:17:45 -0500
Subject: [PATCH] Send error messages to STDERR

---
 tdrop | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tdrop b/tdrop
index 01447fc..68e14f4 100755
--- a/tdrop
+++ b/tdrop
@@ -115,7 +115,7 @@ shift "$((OPTIND-1))"
 program=$1
 
 if [[ $# -ne 1 ]]; then
-	echo "Exactly 1 positional argument is required." \
+	echo >&2 "Exactly 1 positional argument is required." \
 		"For help use -h or --help or see the manpage." | \
 		tee -a /tmp/tdrop/log
 	exit 1
@@ -123,19 +123,19 @@ fi
 
 # require -m for negative width or height
 if ! $monitor_aware && [[ $height$width == *-* ]]; then
-	echo "-m is required to use negative width or height values." | \
+	echo >&2 "-m is required to use negative width or height values." | \
 		tee -a /tmp/tdrop/log
 	exit 1
 fi
 
 # validate options that require number values
 if [[ ! $height$width$xoff$yoff =~ ^[0-9%-]*$ ]]; then
-	echo "The -h, -w, -x, and -y values must be numbers (or percentages)." | \
+	echo >&2 "The -h, -w, -x, and -y values must be numbers (or percentages)." | \
 		tee -a /tmp/tdrop/log
 	exit 1
 fi
 if [[ -n $dec_fix ]] && [[ ! $dec_fix =~ ^-?[0-9]+x-?[0-9]+$ ]]; then
-	echo "The decoration fix value must have form 'num'x'num'." \
+	echo >&2 "The decoration fix value must have form 'num'x'num'." \
 		"The numbers can be negative or zero." | tee -a /tmp/tdrop/log
 	exit 1
 fi