Function defaultRemote

submodule.go:196–217

defaultRemote returns the remote that relative submodule URLs are resolved against, mirroring canonical Git's repo_default_remote (remote.c) and resolve_relative_url (builtin/submodule--helper.c): 1. if HEAD is on a branch with branch. .remote configured, use that remote; 2. else if exactly on

(r *Repository)

// finds the branch but with an empty Remote does not short-circuit
// rule (2). Returns an error when the chosen remote is not configured.
func defaultRemote(r *Repository) (*config.RemoteConfig, error) {
	cfg, err := r.Config()
	if err != nil {
		return nil, err
	}

	if ref, err := r.Reference(plumbing.HEAD, false); err == nil &&
		ref.Type() == plumbing.SymbolicReference &&
		ref.Target().IsBranch() {
		if b, ok := cfg.Branches[ref.Target().Short()]; ok && b.Remote != "" {
			return lookupRemote(cfg, b.Remote)
		}
	}

	if len(cfg.Remotes) == 1 {
		for name := range cfg.Remotes {
			return lookupRemote(cfg, name)
		}
	}

	return lookupRemote(cfg, DefaultRemoteName)
}

func lookupRemote(cfg *config.Config, name string) (*config.RemoteConfig, error) {
	rc, ok := cfg.Remotes[name]