tweak for svn prompt in oh-my-zsh

svn.patch

---
 plugins/svn/svn.plugin.zsh |   30 ++++++++++++++++++------------
 1 files changed, 18 insertions(+), 12 deletions(-)

diff --git a/plugins/svn/svn.plugin.zsh b/plugins/svn/svn.plugin.zsh
index e2cf96c..b5b5265 100644
--- a/plugins/svn/svn.plugin.zsh
+++ b/plugins/svn/svn.plugin.zsh
@@ -1,5 +1,6 @@
 function svn_prompt_info {
-    if [ $(in_svn) ]; then
+    if in_svn; then
+        unset SVN_INFO
         echo "$ZSH_PROMPT_BASE_COLOR$ZSH_THEME_SVN_PROMPT_PREFIX\
 $ZSH_THEME_REPO_NAME_COLOR$(svn_get_repo_name)$ZSH_PROMPT_BASE_COLOR$ZSH_THEME_SVN_PROMPT_SUFFIX$ZSH_PROMPT_BASE_COLOR$(svn_dirty)$ZSH_PROMPT_BASE_COLOR"
     fi
@@ -7,29 +8,34 @@ $ZSH_THEME_REPO_NAME_COLOR$(svn_get_repo_name)$ZSH_PROMPT_BASE_COLOR$ZSH_THEME_S
 
 
 function in_svn() {
-    if [[ -d .svn ]]; then
-        echo 1
-    fi
+    test -d .svn 
+}
+
+function svn_get_info() {
+       if [ ! $SVN_INFO ]; then
+               SVN_INFO=$(svn info)
+        fi
+        echo "$SVN_INFO"
 }
 
 function svn_get_repo_name {
-    if [ $(in_svn) ]; then
-        svn info | sed -n 's/Repository\ Root:\ .*\///p' | read SVN_ROOT
+    if in_svn; then
+        svn_get_info | sed -n 's/Repository\ Root:\ .*\///p' | read SVN_ROOT
     
-        svn info | sed -n "s/URL:\ .*$SVN_ROOT\///p" | sed "s/\/.*$//"
+        svn_get_info | sed -n "s/URL:\ .*$SVN_ROOT\///p" | sed "s/\/.*$//"
     fi
 }
 
 function svn_get_rev_nr {
-    if [ $(in_svn) ]; then
-        svn info 2> /dev/null | sed -n s/Revision:\ //p
+    if in_svn; then
+        svn_get_info 2> /dev/null | sed -n s/Revision:\ //p
     fi
 }
 
 function svn_dirty_choose {
-    if [ $(in_svn) ]; then
-        s=$(svn status|grep -E '^\s*[ACDIM!?L]' 2>/dev/null)
-        if [ $s ]; then 
+    if in_svn; then
+        svn status|grep -q -E '^\s*[ACDIM!?L]' 2>/dev/null
+        if [ $? ]; then 
             echo $1
         else 
             echo $2
-- 
1.7.4.1