blob: b691599393c0256910c4b5ce60adf922da29a69d [file]
merge API
=========
The merge API helps a program to reconcile two competing sets of
improvements to some files (e.g., unregistered changes from the work
tree versus changes involved in switching to a new branch), reporting
conflicts if found. The library called through this API is
responsible for a few things.
* determining which trees to merge (recursive ancestor consolidation);
* lining up corresponding files in the trees to be merged (rename
detection, subtree shifting), reporting edge cases like add/add
and rename/rename conflicts to the user;
* performing a three-way merge of corresponding files, taking
path-specific merge drivers (specified in `.gitattributes`)
into account.
Data structures
---------------
* `mmfile_t`
This stores a buffer and its size for input to or output from the xdiff
backend. See `xdiff/xdiff.h` for the definition and `diff.c` for examples.
* `struct ll_merge_options`
Check merge-ll.h for details.
Low-level (single file) merge
-----------------------------
Check merge-ll.h for details.