From db313ba89e9d6eecc6b605576931947d68a0e5dc Mon Sep 17 00:00:00 2001
From: Christophe Drevet <christophe.drevet@cea.fr>
Date: Fri, 4 Jan 2013 13:01:06 +0100
Subject: [PATCH] LP_PS1_PREFIX used to add arbitrary prompt before anything
 else

---
 README.md    | 7 +++++++
 liquidprompt | 3 ++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index cd19141..6f38323 100644
--- a/README.md
+++ b/README.md
@@ -129,6 +129,13 @@ Note also that all the `LP_ENABLE_…` variables override the templates,
 i.e. if you use `$LP_BATT` in your template and you set `LP_ENABLE_BATT=0`
 in your config file, you will not have the battery informations.
 
+## ADD A PS1 PREFIX
+
+You can prefix the `LP_PS1` variable with anything you want using the
+`LP_PS1_PREFIX`. The following example activate title change on xterm-like
+windows:
+
+    export LP_PS1_PREFIX="\[\e]0;\u@\h: \w\a\]"
 
 ## PUT THE PROMPT IN A DIFFERENT ORDER
 
diff --git a/liquidprompt b/liquidprompt
index 4874551..02d643b 100755
--- a/liquidprompt
+++ b/liquidprompt
@@ -189,6 +189,7 @@ _lp_source_config()
     LP_PATH_KEEP=${LP_PATH_KEEP:-2}
     LP_HOSTNAME_ALWAYS=${LP_HOSTNAME_ALWAYS:-0}
     LP_PS1=${LP_PS1:-""}
+    LP_PS1_PREFIX=${LP_PS1_PREFIX:-""}
 
     LP_ENABLE_PERM=${LP_ENABLE_PERM:-1}
     LP_ENABLE_SHORTEN_PATH=${LP_ENABLE_SHORTEN_PATH:-1}
@@ -1016,7 +1017,7 @@ _lp_set_prompt()
 
     if [[ -z $LP_PS1 ]] ; then
         # add time, jobs, load and battery
-        PS1="${LP_TIME}${LP_BATT}${LP_LOAD}${LP_JOBS}"
+        PS1="${LP_PS1_PREFIX}${LP_TIME}${LP_BATT}${LP_LOAD}${LP_JOBS}"
         # add user, host and permissions colon
         PS1="${PS1}[${LP_USER}${LP_HOST}${LP_PERM}"