--- a/.bash_prompt	Wed Aug 27 03:54:46 2014 +0900
+++ b/.bash_prompt	Wed Aug 27 14:40:49 2014 +0900
@@ -1,20 +1,20 @@
 #!/bin/bash
 
+RETURN_CODE="$?"
+RESET="\[\e[0m\]"
+BOLD="\[\e[1m\]"
+
+R="\[\e[1;31m\]"
+G="\[\e[1;32m\]"
+Y="\[\e[1;33m\]"
+B="\[\e[1;34m\]"
+P="\[\e[1;35m\]"
+C="\[\e[1;36m\]"
+
+TIME="${G}\t${RESET}"
+
 function prompt_command {
-    local RETURN_CODE="$?"
-    local RESET="\[\e[0m\]"
-    local BOLD="\[\e[1m\]"
-
-    local R="\[\e[1;31m\]"
-    local G="\[\e[1;32m\]"
-    local Y="\[\e[1;33m\]"
-    local B="\[\e[1;34m\]"
-    local P="\[\e[1;35m\]"
-    local C="\[\e[1;36m\]"
-
-    local TIME="${G}\t${RESET}"
-
-    if [[ ${EUID} == 0 ]] ; then
+    if [[ $EUID == 0 ]] ; then
         local PROMPT_COLOR="$R"
         
         # getting hg and git info is disabled for root
@@ -23,7 +23,7 @@
     else
         local PROMPT_COLOR="$G"
         
-        # testing if current dir is a part of hg repo
+        # testing if current dir is a part of hg/git repo
         local TEST_DIR="$PWD"
             
         while true ; do
@@ -33,7 +33,7 @@
             TEST_DIR=$(dirname "$TEST_DIR")
         done
         
-        if [[ "$HG_TRACKED" ]] ; then
+        if [[ $HG_TRACKED ]] ; then
             local SUM=$(LC_ALL=C hg sum 2>/dev/null)
             local PARENTS=($(grep -Po '(?<=parent: ).*(?=:)' <<< "$SUM"))
             local BRANCH=$(grep -Po '(?<=branch: ).*$' <<< "$SUM")
@@ -66,7 +66,7 @@
             esac
             local HG_INFO=" ${P}${BRANCH}☿${REV}${R}${UPDATE}${G}${MERGEREV}${R}${COMMIT}${RESET}"
         fi
-        if [[ "$GIT_TRACKED" ]] ; then
+        if [[ $GIT_TRACKED ]] ; then
             local GIT_STATUS=$(LC_ALL=C git status 2>/dev/null)
             local GIT_BRANCH=$(grep -Po '(?<=On branch ).*$' <<< "$GIT_STATUS")
             
@@ -84,11 +84,11 @@
         fi
     fi
 
-    if [[ "$VIRTUAL_ENV" ]] ; then
+    if [[ $VIRTUAL_ENV ]] ; then
         local VENV="${G}+"$(basename "$VIRTUAL_ENV")"${RESET}"
     fi
 
-    if [[ "$RETURN_CODE" != 0 ]] ; then
+    if [[ $RETURN_CODE != 0 ]] ; then
         local RETCODE="${R}${RETURN_CODE}${RESET} "
     fi
     
@@ -98,5 +98,5 @@
 ${PROMPT_COLOR}\\\$${RESET} "
 }
 
-export VIRTUAL_ENV_DISABLE_PROMPT="1"
+export VIRTUAL_ENV_DISABLE_PROMPT=1
 export PROMPT_COMMAND=prompt_command