* update config for early tmux versions

* use suffix for bash history from tmux pane number

.shell-history

@@ -7,7 +7,11 @@ fi
 # Add the tty to the history file
 # Each terminal's history will be stored in
 # its own file
-HISTSUFFIX=`tty | sed 's/\///g;s/^dev//g'`
+if [ ! -z "${TMUX_PANE}" ]; then
+	HISTSUFFIX="${TMUX_PANE}"
+else
+	HISTSUFFIX=`tty | sed 's/\///g;s/^dev//g'`
+fi
 HISTFILE="$HOME/.bash_history_log/bash_history_$HISTSUFFIX"
 
 # Time stamp for the history