Preserve PROMPT_xx_COLOUR if already set. Users can override the colours.

git-svn-id: https://svn.cambridge.iain.cx/profile/trunk@5 6be0d1a5-5cfe-0310-89b6-964be062b18b

diff --git a/.profile.d/ps1.bashrc b/.profile.d/ps1.bashrc
index 6f81794..bb05253 100644 (file)
--- a/.profile.d/ps1.bashrc
+++ b/.profile.d/ps1.bashrc
@@ -1,15 +1,18 @@
 # $Id$
-# VERSION 1.2 (2001-10-31)
+# VERSION 1.3 (2005-08-15)
 #
-# 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.
 #
-# to use, add a call to __ps1 in your .bash_profile
+# 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.
 
-export PROMPT_OK_COLOUR=32
-export PROMPT_FAILED_COLOUR=31
+export PROMPT_OK_COLOUR=${PROMPT_OK_COLOUR:-32}
+export PROMPT_FAILED_COLOUR=${PROMPT_OK_COLOUR:-31}
 
 function __ps1() {
   export PS1='\u@\[\033[1;$(__ps1_col $?)m\]\h\[\033[0m\]$(__ps1_ret $?):\w\$ '