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[profile.git] / .profile.d / ps1.bashrc

diff --git a/.profile.d/ps1.bashrc b/.profile.d/ps1.bashrc
index 6f81794..29fa704 100644 (file)
--- a/.profile.d/ps1.bashrc
+++ b/.profile.d/ps1.bashrc
@@ -1,18 +1,27 @@
 # $Id$
-# VERSION 1.2 (2001-10-31)
 #
-# coloured prompts for bash
+# Coloured prompts for bash.
 #
-# prompt is user@host:/dir$ where host is highlighted in green if the last 
-# command exited 0 or in red (followed by the error code) otherwise
+# Prompt is user@host:/dir$ where host is highlighted in green if the last 
+# command exited 0 or in red (followed by the error code) otherwise.
+#
+# Colouring is performed by the __ps1_col() and __ps1_ret() functions.
+# We redirect stderr to /dev/null when calling these functions to prevent 
+# bash complaining about not knowing them when you su to another user, 
+# retaining PS1 but not the function definitions.
+#
+# Override the PROMPT_OK_COLOUR and PROMPT_FAILED_COLOUR environment variables 
+# to set different colours.
+#
+# To use, add a call to __ps1 in your .bash_profile file.
 #
-# to use, add a call to __ps1 in your .bash_profile
 
-export PROMPT_OK_COLOUR=32
-export PROMPT_FAILED_COLOUR=31
+export PROMPT_OK_COLOUR=${PROMPT_OK_COLOUR:-32}
+export PROMPT_FAILED_COLOUR=${PROMPT_FAILED_COLOUR:-31}
 
 function __ps1() {
   export PS1='\u@\[\033[1;$(__ps1_col $?)m\]\h\[\033[0m\]$(__ps1_ret $?):\w\$ '
+  export PS1='\u@\[\033[1;$(__ps1_col $? 2>/dev/null)m\]\h\[\033[0m\]$(__ps1_ret $? 2>/dev/null):\w\$ '
   return 0
 }