From 5794c3aeac3367abdd7e9ba83f5618253173dc6e Mon Sep 17 00:00:00 2001
From: nojhan <nojhan@gmail.com>
Date: Sun, 23 Sep 2012 23:07:51 +0200
Subject: [PATCH] Feature: blue @ when connected with X11 support

If the current connection supports X (if we are in a X session or if we have
enabled X11 forwarding under ssh), the @ displayed in front of the hostname
is colored in blue (use LP_COLOR_X11 to change the color).
---
 README.md    |  2 ++
 liquid.theme |  1 +
 liquidprompt | 10 +++++++++-
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 359eaa6..063ffc1 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,7 @@ and bring it back with `fg`), if there is any;
 any;
 * the current user, in bold yellow if it is root, in light white if it is not
 the same as the login user;
+* a blue @ if the connection has X11 support;
 * the current host, if you are connected via an SSH or telnet connection, with
 different colors for each case;
 * a green colon if the user has write permissions on the current directory,
@@ -200,6 +201,7 @@ Set to a null string "" if you do not want color.
     * `LP_COLOR_HOST` local host
     * `LP_COLOR_SSH` connected via SSH
     * `LP_COLOR_TELNET` connected via telnet
+    * `LP_COLOR_X11` connected with X11 support
 * Separation mark (aka permiison in the working dir)
     * `LP_COLOR_WRITE` have write permission
     * `LP_COLOR_NOWRITE` do not have write permission
diff --git a/liquid.theme b/liquid.theme
index 3fefbfc..b434241 100644
--- a/liquid.theme
+++ b/liquid.theme
@@ -65,6 +65,7 @@ LP_COLOR_USER_ROOT="$BOLD_YELLOW" # root
 LP_COLOR_HOST=""             # local host
 LP_COLOR_SSH="$BOLD_CYAN"    # connected via SSH
 LP_COLOR_TELNET="$WARN_RED"  # connected via telnet
+LP_COLOR_X11="$BLUE"         # connected with X11 support
 
 # Separation mark (aka permiison in the working dir)
 LP_COLOR_WRITE="$GREEN"  # have write permission
diff --git a/liquidprompt b/liquidprompt
index f86929e..96b13a2 100755
--- a/liquidprompt
+++ b/liquidprompt
@@ -225,6 +225,7 @@ _lp_source_config()
     LP_COLOR_HOST=${LP_COLOR_HOST:-""}
     LP_COLOR_SSH=${LP_COLOR_SSH:-$BOLD_CYAN}
     LP_COLOR_TELNET=${LP_COLOR_TELNET:-$WARN_RED}
+    LP_COLOR_X11=${LP_COLOR_X11:-$BLUE}
     LP_COLOR_WRITE=${LP_COLOR_WRITE:-$GREEN}
     LP_COLOR_NOWRITE=${LP_COLOR_NOWRITE:-$RED}
     LP_COLOR_UP=${LP_COLOR_UP:-$GREEN}
@@ -331,13 +332,20 @@ _lp_connection()
 # else diplay the host without color
 # The connection is not expected to change from inside the shell, so we
 # build this just once
-LP_HOST="${NO_COL}@"
+LP_HOST=""
 if [[ -r /etc/debian_chroot ]] ; then
     local debchroot
     debchroot=$(cat /etc/debian_chroot)
     LP_HOST="${LP_HOST}(${debchroot})"
 fi
 
+# If we are connected with a X11 support
+if [[ -n "$DISPLAY" ]] ; then
+    LP_HOST="${LP_COLOR_X11}${LP_HOST}@${NO_COL}"
+else
+    LP_HOST="${LP_HOST}@"
+fi
+
 case "$(_lp_connection)" in
 lcl)
     if [[ "$LP_HOSTNAME_ALWAYS" != 1 ]] ; then