jj jj jj jj jj

# jj jj jj jj jj Source: [https://caiustheory.com/jj-jj-jj-jj-jj/](https://caiustheory.com/jj-jj-jj-jj-jj/) 2025\-12\-23 10:00:00In a similar vein to[git git git git git](https://caiustheory.com/git-git-git-git-git/), if you’re using[jj](https://www.jj-vcs.dev/)and find you’ve accidentally typed one`jj`too many in the command line, it errors at you\. In this case we’re trying to pull the id of the current changeset we’re editing: ``` $ jj jj show -T 'change_id.short()' error: unrecognized subcommand 'jj' Usage: jj [OPTIONS] <COMMAND> For more information, try '--help'. ``` How annoying\. Now we could solve this with a shell alias, but`jj`also allows us to define alias’ in the configuration \(much like git\!\), and combined with[`jj util exec`](https://docs.jj-vcs.dev/latest/cli-reference/#jj-util-exec)we should be able to have it run the rest of the line nay bother\. Thinking it through, the initial`jj`will be exec’d by the shell, so that’s gone already\. The second`jj`is then evaluated as the alias, so that’s gone too\. The remaining arguments passed to the alias are`\["show", "\-T", "change\_id\.short\(\)"\]`so if we just exec those it’ll error trying to run`show`as a binary\. We can avoid that by having it exec jj then the arguments from the alias\. Drop the alias in a jj config file \(`jj config edit`is super useful for editing these, or there’s`jj config set`to update it from the shell\) and then we can test it works\. ``` [aliases] # jj all the way down jj = ["util", "exec", "jj"] ``` Lets try our original nested command again and see if we get to see our sweet sweet change id: ``` $ jj jj show -T 'change_id.short()' error: unexpected argument '-T' found tip: to pass '-T' as a value, use '-- -T' Usage: jj util exec [OPTIONS] <COMMAND> [ARGS]... For more information, try '--help'. ``` Oh\. Our`\-T`argument is being interpreted by`jj util exec`, not by the`jj`command we’re running\. Classic nested argument parsing when you’re trying to invoke another command\. Luckily shell/exec has a solution to this, passing`\-\-`as an argument stops parsing all remaining arguments so they are passed along verbatim\. With that in mind we can amend our alias to run`jj util exec`and then stop interpreting any further arguments\. ``` [aliases] # jj all the way down jj = ["util", "exec", "--", "jj"] ``` Now we should be able to see our change id without any issues, no matter how many nested`jj`s there are in the command\! ``` $ jj show -T 'change_id.short()' upvqxuzzvxtx $ jj jj show -T 'change_id.short()' upvqxuzzvxtx $ jj jj jj jj jj show -T 'change_id.short()' upvqxuzzvxtx $ jj jj jj jj jj jj jj jj jj jj jj jj jj jj jj jj jj show -T 'change_id.short()' upvqxuzzvxtx ``` Happy committing\.