How I show the current branch even though there is no current branch

[amiryal]

jj has no notion (currently) of a “current branch”, but it can tell which branches are going to be pushed on jj git push by default. According to the documentation, these are “any branches pointing to remote_branches(remote=<remote>)..@”. Feeding this to jj log -r will show us (among other things in the default log template) the branch we are working on, but it will return an empty result if our remote branch is already up to date:

jj log -r 'remote_branches(remote="origin")..@ & branches()'

To see the branch we are working on regardless of when we jj git push, we may change the revspec to use trunk() or immutable_heads() instead of remote_branches(…):

jj log -r 'trunk()..@ & branches()'

Now, to see just the branch name, we can add a template:

jj log -r 'trunk()..@ & branches()' -T local_branches

This is already quite close to clean output, but we also don’t require the graph, and notice the keyword branches in there (plural). Multiple branches may refer to the same commit, or they may refer to multiple different commits in our chain of work, so we may get multiple branch names per line or multiple lines of output. Our final incantation takes care to output one branch name per line, without the graph:

jj log -r 'trunk()..@ & branches()' -T 'local_branches.join("\n") ++ "\n"' --no-graph --ignore-working-copy

Personally, I use this as part of my shell prompt (hence the added --ignore-working-copy at the end). It could also potentially be incorporated somehow into jj status, if it makes sense to the maintainers.

[colemickens]

I think this is a time where --ignore-working-copy might come in handy as well?

[amiryal]

Right! Updated the OP to include it, thanks.