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# RULE: moving focus is a BUILTIN like any other, so there is ONE
# implementation and every route reaches it. SPC w h/j/k/l run Left/Down/Up/
# Right — the geometric focusDir the Ctrl-w prefix also runs — and SPC j j
# plus body-normal Esc run Last, the hop to the pane you were in BEFORE this
# one, whichever kind it was. It reads the focus history the core already keeps
# to hand focus back when a pane closes, and going somewhere is itself recorded,
# which is what makes the hop back the same key. Focus shows up in the golden's
# `cursor=` header: that is the
# ACTIVE pane's cursor, so each snap is named by the pane it should land in.
file w.txt alpha\nbeta\ngamma
start 31 100 w.txt
wait 8000 Newcol Joincol
wait 8000 w.txt
stable 700 20000
# A FILE boots alone now, so the terminal every hop below needs is opened here:
# Alt-n opens it and focuses it, Alt-c puts it in a column of its own on the
# right, SPC w h comes straight back — which also puts the shell on the stack,
# and Last only ever names a pane that is on it. (`New`/`Newcol` open an empty
# +New scratch now, not a shell.)
key a-n
key a-c
stable 700 15000
key space w h
stable 400 5000
# left column = the file, right column = that shell; the file has focus
snap start
# SPC j j: the pane before this one, which is the shell just opened
key space j j
stable 400 5000
snap to-term
# ...and back, because going there made the file the pane before THAT
key space j j
stable 400 5000
snap back-to-file
# A bare Esc from a body in normal mode dispatches that SAME builtin: file to
# terminal, then the same key on the normal-mode terminal returns to the file.
key esc
settle 100
stable 400 5000
snap esc-to-term
key esc
settle 100
stable 400 5000
snap esc-back-to-file
# Alt-n: a second shell, below the file — the left column now has two rows
key a-n
stable 700 15000
snap altn
# SPC w k: up out of that new shell into the file above it
key space w k
stable 400 5000
snap up
# SPC w l: right, into the launch shell
key space w l
stable 400 5000
snap right
# SPC w h: left, back into the file column
key space w h
stable 400 5000
snap left
# SPC w j: down, into the shell under the file
key space w j
stable 400 5000
snap down
# SPC j j from a terminal: the file, which is where SPC w h left off
key space j j
stable 400 5000
snap toggle-doc
# ...and back to the shell just left, not the launch shell in the right column,
# which was focused earlier
key space j j
stable 400 5000
snap toggle-back
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