Summary: Add bors merge as an alias to bors r+, bors merge=FOO as an alias to bors r=FOO, bors merge p=123 as an alias to bors r+ p=123, bors merge=FOO p=123 as an alias to bors r=FOO p=123, and bors merge- as an alias to bors r-.

I allow this RFC document to be modified and redistributed under the terms of the Apache-2.0 license, or the CC-BY-NC-SA 3.0 license, at your option.

Motivation

Based on the discussion in a previous forum thread (https://forum.bors.tech/t/user-defined-aliases-for-bors-commands/371), multiple users are confused by the bors r+ command.

Guide-level explanation

Once you've set it up, instead of clicking the green "Merge Button", leave a comment like this on the pull request:

bors r+

Equivalently, you can comment the following

bors merge

The pull request, as well as any other pull requests that are reviewed around the same time, will be merged into a branch called "staging". Your CI tool will test it in there, and report the result back where Bors-NG can see it. If that result is "OK", master gets fast-forwarded to reach it.

The status can be seen in the Dashboard page, which also makes a good one-stop-shop to see pull requests that are waiting for review.

Reference-level explanation

Syntax Description
bors r+ Run the test suite and push to master if it passes. Short for "reviewed: looks good."
bors merge Equivalent to bors r+
bors r=[list] Same as r+, but the "reviewer" in the commit log will be recorded as the user(s) given as the argument.
bors merge=[list] Equivalent to bors r=[list]
bors r- Cancel an r+ or r=.
bors merge- Equivalent to bors r-
bors p=[priority] Set the priority of the current pull request. Pull requests with different priority are never batched together. The pull request with the bigger priority number goes first.
bors r+ p=[priority] Set the priority, run the test suite, and push to master (shorthand for doing p= and r+ one after the other).
bors merge p=[priority] Equivalent to bors r+ p=[priority]

Drawbacks

It adds another command that we need to maintain.

It creates multiple ways of doing the same thing, which might lead to some confusion.

Rationale and alternatives

Why is this design the best in the space of possible designs?

  • It allows for consistency across different projects that use Bors-NG.

What other designs have been considered and what is the rationale for not choosing them?

  • We could allow unlimited customization of aliases in bors.toml. But then this will lead to inconsistency across different projects that use Bors-NG and will become a real headache for people that are reviewers on multiple different projects.

What is the impact of not doing this?

  • If we do nothing, then people will continue to be confused by the opaque r+ command.

Prior art

The prior art for adding aliases to Bors-NG is the following RFC: https://forum.bors.tech/t/allow-delegate-to-be-abbreviated-as-d/362

Unresolved questions

None.

Future possibilities

Hopefully we won't need to add any more aliases after this one.