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demos: allow broken pipe when doing jj | head
, fix opid
`jj | head` exits with non-zero code since `head` breaks the pipe. Also, removed `--color=always` from that command as it will shortly become unnecessary. Previosly, this caused the script to stop since it's run with `set -o pipefail`. Also, the operation id recovery code stopped working. We can use `jj debug operation` for this purpose now.
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@ -27,10 +27,10 @@ comment "The repo now looks like this:"
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run_command "jj log"
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comment "The most recent portion of the operation log
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is:"
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run_command "jj op log --color=always | head"
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run_command_allow_broken_pipe "jj op log | head"
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comment "Let's undo that rebase operation:"
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rebase_op=$(jj --color=never op log | grep '^◉ ' | sed '2q;d' | cut -b4-15)
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rebase_op=$(jj --color=never op log --no-graph -T 'id.short(5)' --limit 1 --at-op @--)
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run_command "jj undo $rebase_op"
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comment "Note that only the rebase was undone, and the
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@ -14,6 +14,21 @@ run_command() {
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eval "$@"
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}
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run_command_allow_broken_pipe() {
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run_command "$@" || {
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EXITCODE="$?"
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case $EXITCODE in
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3)
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# `jj` exits with error coded 3 on broken pipe,
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# which can happen simply because of running
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# `jj|head`.
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return 0;;
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*)
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return $EXITCODE;;
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esac
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}
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}
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blank() {
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echo ""
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}
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