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
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25 changed files with 204 additions and 11 deletions

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@ -21,6 +21,8 @@ const (
MergeStyleRebaseMerge MergeStyle = "rebase-merge"
// MergeStyleSquash squash commits into single commit before merging
MergeStyleSquash MergeStyle = "squash"
// MergeStyleFastForwardOnly fast-forward merge if possible, otherwise fail
MergeStyleFastForwardOnly MergeStyle = "fast-forward-only"
// MergeStyleManuallyMerged pr has been merged manually, just mark it as merged directly
MergeStyleManuallyMerged MergeStyle = "manually-merged"
// MergeStyleRebaseUpdate not a merge style, used to update pull head by rebase