| Value | Meaning |
|---|---|
| GIT_MERGE_ANALYSIS_NONE0 | No merge is possible. (Unused.) |
| GIT_MERGE_ANALYSIS_NORMAL1 << 0 | A "normal" merge; both HEAD and the given merge input have diverged from their common ancestor. The divergent commits must be merged. |
| GIT_MERGE_ANALYSIS_UP_TO_DATE1 << 1 | All given merge inputs are reachable from HEAD, meaning the repository is up-to-date and no merge needs to be performed. |
| GIT_MERGE_ANALYSIS_FASTFORWARD1 << 2 | The given merge input is a fast-forward from HEAD and no merge needs to be performed. Instead, the client can check out the given merge input. |
| GIT_MERGE_ANALYSIS_UNBORN1 << 3 | The HEAD of the current repository is "unborn" and does not point to a valid commit. No merge can be performed, but the caller may wish to simply set HEAD to the target commit(s). |
The results of git_merge_analysis indicate the merge opportunities.