--- a/.bash_prompt	Mon Sep 10 17:02:38 2018 +0800
+++ b/.bash_prompt	Fri Jan 18 20:40:15 2019 +0800
@@ -4,14 +4,16 @@
     local RETURN_CODE="$?"
 
     # dark, light, bold
-    local Rd="\[\e[0;31m\]"; local R="\[\e[0;91m\]"; local Rb="\[\e[1;31m\]"
-    local Gd="\[\e[0;32m\]"; local G="\[\e[0;92m\]"; local Gb="\[\e[1;32m\]"
-    local Yd="\[\e[0;33m\]"; local Y="\[\e[0;93m\]"; local Yb="\[\e[1;33m\]"
-    local Bd="\[\e[0;34m\]"; local B="\[\e[0;94m\]"; local Bb="\[\e[1;34m\]"
-    local Pd="\[\e[0;35m\]"; local P="\[\e[0;95m\]"; local Pb="\[\e[1;35m\]"
-    local Cd="\[\e[0;36m\]"; local C="\[\e[0;96m\]"; local Cb="\[\e[1;36m\]"
+    local Kd='\[\e[0;30m\]'; local K='\[\e[0;90m\]'; local Kb='\[\e[1;30m\]'
+    local Rd='\[\e[0;31m\]'; local R='\[\e[0;91m\]'; local Rb='\[\e[1;31m\]'
+    local Gd='\[\e[0;32m\]'; local G='\[\e[0;92m\]'; local Gb='\[\e[1;32m\]'
+    local Yd='\[\e[0;33m\]'; local Y='\[\e[0;93m\]'; local Yb='\[\e[1;33m\]'
+    local Bd='\[\e[0;34m\]'; local B='\[\e[0;94m\]'; local Bb='\[\e[1;34m\]'
+    local Pd='\[\e[0;35m\]'; local P='\[\e[0;95m\]'; local Pb='\[\e[1;35m\]'
+    local Cd='\[\e[0;36m\]'; local C='\[\e[0;96m\]'; local Cb='\[\e[1;36m\]'
 
     if [[ $TERM == 'linux' ]] ; then
+        K=$Kb
         R=$Rb
         G=$Gb
         Y=$Yb
@@ -20,8 +22,8 @@
         C=$Cb
     fi
 
-    local BOLD="\[\e[1m\]"
-    local RESET="\[\e[0m\]"
+    local BOLD='\[\e[1m\]'
+    local RESET='\[\e[0m\]'
 
     local TIME="${G}\t${RESET}"
 
@@ -30,13 +32,13 @@
     fi
 
     if [[ $EUID == 0 ]] ; then
-        local PROMPT_COLOR="$R"
+        local PROMPT_COLOR=$R
 
         # getting hg and git info is disabled for root
         local HG_INFO=" ${P}-${RESET}"
         local GIT_INFO=" ${G}-${RESET}"
     else
-        local PROMPT_COLOR="$G"
+        local PROMPT_COLOR=$G
 
         case "$(_upsearch)" in
             'hg')
@@ -55,8 +57,8 @@
     fi
 
     PS1="\
-[${TIME} \u@\h \
-${RETCODE}\W${VENV}${HG_INFO}${GIT_INFO}]\
+${K}[${RESET}${TIME} \\u@\\h \
+${RETCODE}\\W${VENV}${HG_INFO}${GIT_INFO}${K}]${RESET}\
 ${PROMPT_COLOR}\\\$${RESET} "
 }