My latest Unix tooling abuse/creation.
I’m defining a alias command for Jujutsu:
parent-add = ["util", "exec", "--", "bash", "-c", '''
set -euo pipefail
source <(
nix run nixpkgs#argc -- --argc-eval /dev/stdin "$@" << EOF
# @option -r=@ Commit to modify
# @option -d Parent to add
# @arg parent Parent to add (positional version)
EOF
)
commit=${argc_r}
new_parent=${argc_d:-${argc_parent:-}}
if [ -z ${commit:-} ]; then
>&2 echo "Must provide a commit to rebase"
exit 1
fi
if [ -z ${new_parent:-} ]; then
>&2 echo "Must provide a new parent"
exit 1
fi
jj rebase -s "${commit}" -d "${commit}-" -d "${new_parent}"
''', ""]
which is like an shell script wrapped in a toml config file. Since the alias is executed as bash -c <...> it does not have an usable $0. So I’m using a heredoc passed via /dev/stdin 🤷 .
This works:
> jj parent-remove -h
USAGE: stdin [OPTIONS] [PARENT]
ARGS:
[PARENT] Parent to remove (positional version)
OPTIONS:
-r <R> Commit to modify [default: @]
-d <D> Parent to remove
-h, -help Print help
-V, -version Print version
