Can you parameterize aliases / make functions

[thomasheartman]

Can you create aliases with defaults and / or read parameters in jj? The documentation is a little unclear (or doesn't quite seem to cover it?), and I haven't found any clear answers to it. (So I'm actually guessing you probably want a shell function for this, but thought I'd ask.)

Specifically, what I have found myself doing a lot, is

jj git push --named <branch>=<rev>

(For my own convenience, I've been using a branch/bookmark name that maps to the ticket I'm working on.)

This isn't terrible, but it's a little more typing than I'd like. Ideally, I'd like to create an alias--such as pub--that takes the branch name as the first parameter, and an optional revision as the second, defaulting to @ or @-. In other words I'd like

jj pub xyz

to be the same as

jj git push --named xyz=@-

and

jj pub abc @

to be the same as

jj git push --named abc=@

Is that possible in the jj config file, or is this something I'll need to create a shell function for instead? ChatGPT says this needs to be a shell function, so that's what I'm expecting. But still, it'd be nice if it could just live in the jj config file.

Come to think of it, I think I've seen aliases that are actual shell scripts? Is this a use case for one of those? Are there docs for that? I tried searching the docs, but couldn't find them.

Thanks!

[yuja]

No native support yet. You'll have to use shell script.

There's an idea, but it's not landed.
#3673 (comment)

[thomasheartman]

Perfect; thanks for the clarification! 🙏🏼

[thomasheartman]

But also, reading that thread did take me to what I was looking for: jj util exec 😄

I'm perfectly happy to write a small shell script for this, as long as I can store it in my config file. So for this specific use case, this seems to do the trick. (Of course, you might wanna do some validation that you provide a bookmark name, but I'll leave that as an exercise for the reader)

pub = ['util', 'exec', '--', 'sh', '-c', '''
			jj git push --named "$1"="${2:-@-}"
		''', '']