Re: From Jiang: question about dialog and mutt

[Jiang Qian <jqian@xxxxxxxxxxxxxxxxxxx>]

> Mutt doesn't lock the display when it calls sendmail--it has no means 
> to do so--so this isn't a matter of mutt not surrendering the display.  
> This appears to be a problem with your script.  Not being able to see 
> or try your script, it's hard to tell.
> 
> This is just a hunch, but since the script's stdin is connected to a 
> pipe from which it receives the message text, you may have to tell 
> dialog to use /dev/tty as its stdin and/or stdout, something like 
> this:
> 
>    dialog --yesno "Can you see me now?" 20 20 < /dev/tty > /dev/tty
> 
> HTH,
> Gary
Thanks a lot Gary. TTY is indeed the problem. Once I set it to be the 
correct one, it works. I attach my modified script in this email just in 
case anyone wants to use text console instead of zenity in "rev_"(?)'s 
script on http://wiki.mutt.org/?ConfigTricks/CheckAttach
My script require $TTY to be set to correct value
Jiang
#!/bin/bash

SENDMAIL=/usr/sbin/sendmail

###
# this script uses a GUI app called "zenity" to ask for confirmation,
# if not in GUI, just let it pass. If you want TUI (not GUI) query,
# which means you replace "zenity" with something else, then
# drop this DISPLAY check.
###
#if [ -z "$DISPLAY" ]; then
#    exec $SENDMAIL "$@"
#fi

###
# save msg in file to re-use it for multiple tests
###
t=`mktemp -t mutt.XXXXXX` || exit 2
cat  > $t
cat $t > new

###
# define tests for: anything you can think of can be done.
# the return code of last exec'ed cmd is used in final decision below
###
function multipart {
    grep -q '^Content-Type: multipart' $t
}

function word-attach {
    grep -v '^>' $t | egrep -q 'attach*|Attach*'
}

###
# query function must return "true" to let the msg pass.
###
function ask {
#    zenity --question --title 'mutt' --text 'Did you include the attachment 
(if you wanted to)?'
#DIALOG=${DIALOG=dialog}
#DIALOG=${DIALOG=$HOME/bin/dialog}
#terminal=`tty`
#terminal=/dev/pts/7
#echo $terminal >> new
DIALOG=${DIALOG=dialog}
$DIALOG --defaultno --title "mutt" --clear \
        --yesno "Have you added your attachment, if you want one?" 10 30 < $TTY 
> $TTY
#       --yesno "Have you added your attachment?" 10 30
#$DIALOG --title "mutt" \
#        --yesno "Have you added your attachment?" 10 30
#case $? in
#  0)
#    echo "true";;
#  1)
#    echo "false";;
#  255)
#    echo "ESC pressed.";;
#esac
}

###
# FINAL DECISION:
# chain series of functions, use ! || && for logic connections,
# see "man $SHELL" for more possibilites like grouping, dependencies.
###
if multipart || ! word-attach || ask; then
    $SENDMAIL "$@" < $t
    status=$?
else
    status=1
fi
clear
rm -f $t
exit $status