From cb08b74ffa83f47469ad4ccc6d796a4ca4280824 Mon Sep 17 00:00:00 2001
From: Phillip Aldridge <phillip@powershop.co.nz>
Date: Wed, 20 Aug 2014 09:54:52 +1200
Subject: [PATCH] Don't repeat the prompt if it hasn't changed

---
 themes/iterate/iterate.theme.bash | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/themes/iterate/iterate.theme.bash b/themes/iterate/iterate.theme.bash
index ed6d41f2..b417f34f 100644
--- a/themes/iterate/iterate.theme.bash
+++ b/themes/iterate/iterate.theme.bash
@@ -40,11 +40,17 @@ function git_prompt_info {
   echo -e "$SCM_PREFIX$SCM_BRANCH$SCM_STATE$SCM_GIT_AHEAD$SCM_GIT_BEHIND$SCM_GIT_STASH$SCM_SUFFIX"
 }
 
+LAST_PROMPT_INFO=""
 function prompt_command() {
-    local prompt_info="${bold_cyan}$(scm_char)${yellow}$(ruby_version_prompt)${green}\w $(scm_prompt_info)"
+    local prompt_info="\n${bold_cyan}$(scm_char)${yellow}$(ruby_version_prompt)${green}\w $(scm_prompt_info)"
+    if [ "$LAST_PROMPT_INFO" = "$prompt_info" ]; then
+        prompt_info=""
+    else
+        LAST_PROMPT_INFO="$prompt_info"
+    fi
     local wrap_char=""
     [[ ${#prompt_info} -gt $(($COLUMNS/1)) ]] && wrap_char="\n"
-    PS1="\n${prompt_info}${green}${wrap_char}→${reset_color} "
+    PS1="${prompt_info}${green}${wrap_char}→${reset_color} "
 }
 
 PROMPT_COMMAND=prompt_command;