update bash $TERM checks

home/bashrc

@@ -1,9 +1,5 @@
 [ -z "$PS1" ] && return
 
-if [ "$TERM" = rxvt-unicode-256color ]; then
-    export TERM=xterm-256color
-fi
-
 HISTCONTROL=erasedups
 HISTSIZE=1000
 HISTFILESIZE=2000
@@ -13,11 +9,15 @@ shopt -s checkwinsize
 #shopt -s physical # chaselinks (doesn't exist?)
 set -o hashall # enable hash command
 
-if [[ "$TERM" = xterm* ]]; then
+[ "$TERM" != rxvt-unicode-256color ] || export TERM=xterm-256color
+
+t="${TERM%%-*}"
+if [ "$t" = xterm ] || [ "$t" = screen ] || [ "$t" = tmux ]; then
     _title="\[\033]2;\w\a\]"
 else
     _title=""
 fi
+unset t
 
 Csucc=$'\\[\e[42m\\]'
 Cfail=$'\\[\e[41m\\]'