Find if a branch is merged into another branch.

I'm attempting, given a list of local branches (repository.branches(Some(BranchType::Local))), to find out which ones have been merged; basically to know if git branch -d "branch name" would give an error telling you the branch isn't fully merged (and that you must use -D if you want to delete anyway).

(this is "pseudo-code" simplified for this issue, so I'm omitting the match clauses, and whatnot)

I'm calling let br = repository.find_branch(&branch_name, BranchType::Local) and then I'm calling let result = br.delete().

This seems like it doesn't care if the branch is merged or not (perhaps I have this all wrong so I once again ask for forgiveness if what I'm trying to do is the "wrong way").

I've come across this: https://github.com/libgit2/libgit2sharp/issues/1433

But this is C#, and I cannot find what the equivalent would be in the rust bindings (my Rust knowledge is also quite limited).

Apologies for creating an Issue, I wasn't sure where to post this.

Thanks in advance.

The issue centers on repository.find_branch(..., BranchType::Local) and br.delete(); first compare those APIs with the linked libgit2/libgit2sharp issue and inspect the Rust binding's branch APIs. Done means documenting or exposing the Rust-supported way to determine whether a local branch is fully merged, including the behavior expected before deletion.