git-merge-index - Run a merge for files needing merging
2. SYNOPSIS ▲
git merge-index [-o] [-q] <merge-program> (-a | [--] <file>*)
3. DESCRIPTION ▲
This looks up the <file>(s) in the index and, if there are any merge entries, passes the SHA1 hash for those files as arguments 1, 2, 3 (empty argument if no file), and <file> as argument 4. File modes for the three files are passed as arguments 5, 6 and 7.
4. OPTIONS ▲
Do not interpret any more arguments as options.
Run merge against all files in the index that need merging.
Instead of stopping at the first failed merge, do all of them in one shot - continue with merging even when previous merges returned errors, and only return the error code after all the merges.
Do not complain about a failed merge program (a merge program failure usually indicates conflicts during the merge). This is for porcelains which might want to emit custom messages.
If git merge-index is called with multiple <file>s (or -a) then it processes them in turn only stopping if merge returns a non-zero exit code.
Typically this is run with a script calling git(cqs imitation of the merge command from the RCS package.
A sample script called git merge-one-file is included in the distribution.
ALERT ALERT ALERT! The git "merge object order" is different from the RCS merge program merge object order. In the above ordering, the original is first. But the argument order to the 3-way merge program merge is to have the original in the middle. Don(cqt ask me why.
-index cat MM This is MM from the original tree.
originalThis is modified MM in the branch A.
merge1This is modified MM in the branch B.
merge2This is modified MM in the branch B.
-index cat AA MM
cat: : No such file or directory This is added AA in the branch A. This is added AA in the branch B. This is added AA in the branch B.
fatal: merge program failed
where the latter example shows how git merge-index will stop trying to merge once anything has returned an error (i.e., cat returned an error for the AA file, because it didn(cqt exist in the original, and thus git merge-index didn(cqt even try to merge the MM thing).
5. AUTHOR ▲
Written by Linus Torvalds <\m[blue]\ \fR\m\s-2\u\d\s+2> One-shot merge by Petr Baudis <\m[blue]\ \fR\m\s-2\u\d\s+2>
6. DOCUMENTATION ▲
Documentation by David Greaves, Junio C Hamano and the git-list <\m[blue]\ \fR\m\s-2\u\d\s+2>.
7. GIT ▲
Part of the git(1) suite
8. NOTES ▲