( pwd.tal )
( )
( reads output of `pwd` and prints it )

|00 @System
    |00 &vector $2
    |02 &expansion $2
    |04 &title $2
    |06 &metadata $2
    |08 &r $2
    |0a &g $2
    |0c &b $2
    |0e &debug $1
    |0f &exit $1

@Console
    |10 &vector $2 ( called when input is ready )
    |12 &read $1 ( read an input byte, e.g. from stdin )
    ( 13 - 14 padding )
    |15 &live $1 ( subprocess: 01 alive, ff dead, 00 not running )
    |15 &exit $1 ( subprocess: exit code if dead )
    |17 &type $1 ( input type: 01 stdin, 02 arg, 03 end of arg, 04 end of args )
    |18 &write $1 ( byte to write to stdout )
    |19 &error $1 ( byte to write to stderr )
    ( 1a - 1b padding )
    |1c &addr $2 ( subprocess: addr of string to run with /bin/sh -c )
    |1e &mode $1 ( mode bits: 01 write stdin, 02 read stdout, 04 read stderr, 08 kill only )
    |1f &exec $1 ( subprocess: run command )

|0100
    ;on-console .Console/vector DEO2
    ;cmd .Console/addr DEO2
    #02 .Console/mode DEO
    #01 .Console/exec DEO
    BRK

( read output from pwd until first newline, then exit )
@on-console
    .Console/type DEI #01 EQU ?{ BRK }
    .Console/read DEI DUP #0a EQU ?{ .Console/write DEO BRK }
    .Console/write DEO
    #80 .System/exit DEO BRK

@cmd "pwd 00