# A file opened from a terminal joins the column a FILE PANE was last used in.
# a.txt boots on the left and b.txt joins it there; b.txt is then dragged into
# the RIGHT column and worked in, so that column is the newest one a doc was
# read in while a.txt keeps the lowest pane id. The c.txt look then comes from
# the right shell and must land under b.txt. Slot order — the rule this
# replaces — would have answered a.txt (pane 0) and put c.txt back on the left.
file a.txt AAA
file b.txt BBB\nB-TWO
file c.txt CCC
# a FILE boots alone (and always outranked -n), so the shell whose ls output
# the looks below are clicked in is opened here: Alt-n stacks it below a.txt
# and Alt-c moves it into a column of its own on the right — the layout the
# boot used to hand over — and SPC w h comes back to a.txt, which is where the
# boot left focus. (`New`/`Newcol` open an empty +New scratch now, not a
# shell, so the shell has to be asked for by name.)
# Builtins announce themselves by default, and an announcement is a band at
# the top of the body -- which moves every row this script clicks. What the
# verbs do is what is under test, not the announcement.
config Verbose off
# pins the pardes placement rule (Placement pardes), which it covers
config Placement pardes
start 31 100 a.txt
wait 8000 AAA
stable 700 20000
key a-n
key a-c
wait 8000 c.txt
stable 700 20000
key space w h
stable 400 5000
snap boot
# look b.txt in the shell's ls output: the second doc splits the first, so
# both docs are in the left column and a.txt is the lower-numbered pane
press right 60 6
release right 60 6
wait 10000 BBB
stable 700 20000
snap two-docs
# drag b.txt's layout box (the gutter cells of its tag row) into the right
# column, below the shell
press left 1 18
drag left 75 21
release left 75 21
stable 700 15000
snap moved
# use a.txt, then b.txt: what counts is the doc last USED, so a.txt being the
# most recent for a moment must not survive the click into b.txt
press left 5 5
release left 5 5
stable 400 5000
press left 60 23
release left 60 23
key j
stable 400 5000
snap worked
# look c.txt from the shell: below b.txt, in the right column
press right 67 6
release right 67 6
wait 10000 CCC
stable 700 20000
snap third