source: Daodan/MinGW/msys/1.0/bin/bzless@ 1163

#!/bin/sh

# Bzmore wrapped for bzip2, 
# adapted from zmore by Philippe Troin <phil@fifi.org> for Debian GNU/Linux.

PATH="/usr/bin:$PATH"; export PATH

prog=`echo $0 | sed 's|.*/||'`
case "$prog" in
        *less)  more=less       ;;
        *)      more=more       ;;
esac

if test "`echo -n a`" = "-n a"; then
  # looks like a SysV system:
  n1=''; n2='\c'
else
  n1='-n'; n2=''
fi
oldtty=`stty -g 2>/dev/null`
if stty -cbreak 2>/dev/null; then
  cb='cbreak'; ncb='-cbreak'
else
  # 'stty min 1' resets eof to ^a on both SunOS and SysV!
  cb='min 1 -icanon'; ncb='icanon eof ^d'
fi
if test $? -eq 0 && test -n "$oldtty"; then
   trap 'stty $oldtty 2>/dev/null; exit' 0 INT QUIT TRAP USR1 PIPE TERM
else
   trap 'stty $ncb echo 2>/dev/null; exit' 0 INT QUIT TRAP USR1 PIPE TERM
fi

if test $# = 0; then
    if test -t 0; then
        echo usage: $prog files...
    else
        bzip2 -cdfq | eval $more
    fi
else
    FIRST=1
    for FILE
    do
        if test $FIRST -eq 0; then
                echo $n1 "--More--(Next file: $FILE)$n2"
                stty $cb -echo 2>/dev/null
                ANS=`dd bs=1 count=1 2>/dev/null` 
                stty $ncb echo 2>/dev/null
                echo " "
                if test "$ANS" = 'e' || test "$ANS" = 'q'; then
                        exit
                fi
        fi
        if test "$ANS" != 's'; then
                echo "------> $FILE <------"
                bzip2 -cdfq "$FILE" | eval $more
        fi
        if test -t; then
                FIRST=0
        fi
    done
fi