Possible to not close a branch off another branch?

Support
#1

We have delete_merged_branches = true set in the config of an app, and i was wondering if it's possible to have:

master
|
|_ Branch A                   <- merge, close PR, & bors delete the branch
        |_ Branch B           <- not have bors close this PR

Or is this default github behaviour? (I hope this rubbish diagram makes sense)

#2

Darn it, it stripped the spacing, basically Branch A is the base for the PR of Branch B

#3

Tip: if your spacing matters, wrap it in triple-quotes, like this:

```
master
|
|_ Branch A                   <- merge, close PR, & bors delete the branch
        |_ Branch B           <- not have bors close this PR
```

This also works on GitHub.

#4

Bors by default should not touch the 2nd pr. But it will be left orphaned when the parent branch is deleted.

I think you could change the base on the 2nd PR to point to master after the first is merged. As long as the parent commit that branch b was created on exists there, it should be ok.