From b52cb624bce059ffe276b7759823f942ebcd6e11 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Olivier=20Mengu=C3=A9?= <dolmen@cpan.org>
Date: Thu, 16 Aug 2012 16:39:20 +0200
Subject: [PATCH] Detect SCM tool presence just once

For git/svn/hg, the tool presence in $PATH is detected just once at init
time (instead of at runtime, at every prompt display) and the LP_ENABLE_
variable is set to false if it is missing.
---
 liquidprompt | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/liquidprompt b/liquidprompt
index 07ec793..94b1b92 100755
--- a/liquidprompt
+++ b/liquidprompt
@@ -265,6 +265,12 @@ _lp_source_config()
 # do source config files
 _lp_source_config
 
+# Disable features if the tool is not installed
+[[ "$LP_ENABLE_GIT" = 1 ]] && { command -v git >/dev/null || LP_ENABLE_GIT=0 ; }
+[[ "$LP_ENABLE_SVN" = 1 ]] && { command -v svn >/dev/null || LP_ENABLE_SVN=0 ; }
+[[ "$LP_ENABLE_HG"  = 1 ]] && { command -v hg  >/dev/null || LP_ENABLE_HG=0  ; }
+
+
 
 ###############
 # Who are we? #
@@ -540,7 +546,6 @@ _lp_git_branch()
 _lp_git_branch_color()
 {
     [[ "$LP_ENABLE_GIT" == 1 ]] || return
-    command -v git >/dev/null 2>&1 || return 1;
     local branch
     branch=$(_lp_git_branch)
     if [[ ! -z "$branch" ]] ; then
@@ -608,7 +613,6 @@ _lp_hg_branch()
 _lp_hg_branch_color()
 {
     [[ "$LP_ENABLE_HG" == 1 ]] || return
-    command -v hg >/dev/null 2>&1 || return 1;
     local branch
     local ret
     branch=$(_lp_hg_branch)
@@ -656,7 +660,6 @@ _lp_svn_branch()
 _lp_svn_branch_color()
 {
     [[ "$LP_ENABLE_SVN" == 1 ]] || return
-    command -v svn >/dev/null 2>&1 || return 1;
     local branch
     branch=$(_lp_svn_branch)
     if [[ ! -z "$branch" ]] ; then