wintext: add tmux support, use in ", ""

Fixes #223.

bin/quote1

@@ -2,19 +2,10 @@
 
 . 9.rc
 
-fn text {
-	if(~ $winid [0-9]*)
-		9p read acme/$winid/body
-	if not if(~ $text9term unix!*)
-		dial -e $text9term </dev/null
-	if not
-		status=''
-}
-
 PROMPT='[^ 	]*[%;$#][ 	]+'
 
 fn cmds {
-	text | sed -n 's/^'$PROMPT'([^"])/	\1/p'
+	wintext | sed -n 's/^'$PROMPT'([^"])/	\1/p'
 }
 
 switch($#*) {

bin/quote2

@@ -1,6 +1,6 @@
 #!/usr/local/plan9/bin/rc
 
-cmd = `{" $* | tail -1}
+cmd = `{quote1 $* | tail -1}
 if (~ $#cmd 0) {
 	echo no such command found >[1=2]
 	exit notfound

bin/wintext

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 case "$winid" in
 [0-9]*)
@@ -12,5 +12,11 @@ unix!*)
 	exit 0
 esac
 
+case "$TMUX" in
+?*)
+	tmux capture-pane -p
+	exit 0
+esac
+
 echo 'no running window found' 2>&1
 exit 1