#!/bin/bash
set -euo pipefail
. "$(dirname "$0")"/demo_helpers.sh

new_tmp_dir
jj init
echo "first" > file
jj branch create first
jj close -m 'first' 
echo "second" > file
jj branch create second
jj close -m 'second' 
echo "third" > file
jj branch create third
jj close -m 'third' 

comment "We are in a repo with three commits, all
editing the same line:"
run_command "jj log"

run_command "jj diff -r first"
run_command "jj diff -r second"
run_command "jj diff -r third"

comment "Let's reorder the second and third commits:"
run_command "jj rebase -s third -d first"
run_command "jj rebase -s second -d third"
run_command "jj log"
comment "The commit labeled \"third\" has a conflict,
as expected. What's more interesting is
that the top commit has no conflict! That's
because it has the changes from all three
commits applied to it."

comment "Let's verify that by looking at its contents:"
run_command "jj co second"
run_command "cat file"

comment "Let's now instead make \"second\" and \"third\"
sibling and merge them:"
run_command "jj rebase -s second -d first"
run_command "jj merge second third -m merged"
run_command "jj log"
comment "Again, because the merge commit has the
changes from all three commits, it has no
conflict."