From 2ccec4857d6e05b4974a69fbedd423addaadaf27 Mon Sep 17 00:00:00 2001
From: Philip Wittamore <philip@wittamore.com>
Date: Fri, 16 May 2025 18:45:40 +0200
Subject: update

---
 colour_test |  2 ++
 pb          | 17 +++++++----------
 2 files changed, 9 insertions(+), 10 deletions(-)

diff --git a/colour_test b/colour_test
index d5d6691..57831f5 100755
--- a/colour_test
+++ b/colour_test
@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+# 256 colour functions 
+# usage:
 source ./pb
 
 printf %b "$(pb_bg 196)$(pb_fg 254) RED $(pb_nc)\n"
diff --git a/pb b/pb
index c4cdd38..cc91933 100755
--- a/pb
+++ b/pb
@@ -12,11 +12,8 @@ pb_nc () {
 
 pb_fg () {
 
-  if [ -z "$1" ] || [ "$1" -eq "$1" ] >/dev/null 2>&1; then
-    true
-  else
-    echo "bad parameter";
-    exit;
+  if [ -z "$1" ] || ! [ "$1" -eq "$1" ] >/dev/null 2>&1; then
+    return 1
   fi
 
   local x
@@ -26,15 +23,14 @@ pb_fg () {
     printf %s "\033[38;5;$1m"
   fi
 
+  return 0
+
 }
 
 pb_bg () {
 
-  if [ -z "$1" ] || [ "$1" -eq "$1" ] >/dev/null 2>&1; then
-    true
-  else
-    echo "bad parameter";
-    exit;
+  if [ -z "$1" ] || ! [ "$1" -eq "$1" ] >/dev/null 2>&1; then
+    return 1
   fi
 
   local x
@@ -44,6 +40,7 @@ pb_bg () {
     printf %s "\033[48;5;$1m"
   fi
 
+  return 0
 }    
 	
 # end 256 colour functions
-- 
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