From 2bbb0425306e1d86abbe88eabb32e0fa1a6f5e5a Mon Sep 17 00:00:00 2001
From: Rostislav Svoboda <thebost@gmail.com>
Date: Fri, 9 May 2014 17:35:18 +0200
Subject: [PATCH] Fix PROMPT_COMMAND setGitPrompt cumulation when re-sourcing
 gitprompt.sh

Repeated calls of:
    source .bash-git-prompt/gitprompt.sh
lead to cumulation:
    PROMPT_COMMAND=setGitPrompt;setGitPrompt;...
rendering everything slow
---
 gitprompt.sh | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/gitprompt.sh b/gitprompt.sh
index fb434cf..df39b43 100755
--- a/gitprompt.sh
+++ b/gitprompt.sh
@@ -292,7 +292,17 @@ if [ -z "$PROMPT_COMMAND" ]; then
 else
   PROMPT_COMMAND=${PROMPT_COMMAND%% }; # remove trailing spaces
   PROMPT_COMMAND=${PROMPT_COMMAND%\;}; # remove trailing semi-colon
-  PROMPT_COMMAND="$PROMPT_COMMAND;setGitPrompt"
+
+  local new_entry="setGitPrompt"
+  case ";$PROMPT_COMMAND;" in
+    *";$new_entry;"*)
+      # echo "PROMPT_COMMAND already contains: $new_entry"
+      :;;
+    *)
+      PROMPT_COMMAND="$PROMPT_COMMAND;$new_entry"
+      # echo "PROMPT_COMMAND does not contain: $new_entry"
+      ;;
+  esac
 fi
 
 git_prompt_dir