Add merge style fast-forward-only (#28954)

With this option, it is possible to require a linear commit history with
the following benefits over the next best option `Rebase+fast-forward`:
The original commits continue existing, with the original signatures
continuing to stay valid instead of being rewritten, there is no merge
commit, and reverting commits becomes easier.

Closes #24906
This commit is contained in:
Chris Copeland 2024-02-12 14:37:23 -08:00 committed by Gergely Nagy
parent 05eaf1cf3e
commit 83123b493f
No known key found for this signature in database
25 changed files with 204 additions and 11 deletions

View file

@ -493,6 +493,23 @@ func (err ErrMergeUnrelatedHistories) Error() string {
return fmt.Sprintf("Merge UnrelatedHistories Error: %v: %s\n%s", err.Err, err.StdErr, err.StdOut)
}
// ErrMergeDivergingFastForwardOnly represents an error if a fast-forward-only merge fails because the branches diverge
type ErrMergeDivergingFastForwardOnly struct {
StdOut string
StdErr string
Err error
}
// IsErrMergeDivergingFastForwardOnly checks if an error is a ErrMergeDivergingFastForwardOnly.
func IsErrMergeDivergingFastForwardOnly(err error) bool {
_, ok := err.(ErrMergeDivergingFastForwardOnly)
return ok
}
func (err ErrMergeDivergingFastForwardOnly) Error() string {
return fmt.Sprintf("Merge DivergingFastForwardOnly Error: %v: %s\n%s", err.Err, err.StdErr, err.StdOut)
}
// ErrRebaseConflicts represents an error if rebase fails with a conflict
type ErrRebaseConflicts struct {
Style repo_model.MergeStyle