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git/Documentation/technical/api-merge.txt
Heba Waly d3d7172e40 merge: move doc to ll-merge.h
Move the related documentation from Documentation/technical/api-merge.txt
to ll-merge.h as it's easier for the developers to find the usage
information beside the code instead of looking for it in another doc file.

Only the ll-merge related doc is removed from
documentation/technical/api-merge.txt because this information will be
redundant and it'll be hard to keep it up to date and synchronized with
the documentation in ll-merge.h.

Signed-off-by: Heba Waly <heba.waly@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-18 15:21:28 +09:00

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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
---------------
* `mmbuffer_t`, `mmfile_t`
These store data usable for use by the xdiff backend, for writing and
for reading, respectively. See `xdiff/xdiff.h` for the definitions
and `diff.c` for examples.
* `struct ll_merge_options`
Check ll-merge.h for details.
Low-level (single file) merge
-----------------------------
Check ll-merge.h for details.