1. NAME

git-merge-file - Run a three-way file merge

2. SYNOPSIS



 
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git merge-file [-L <current-name> [-L <base-name> [-L <other-name>]]]
        [--ours|--theirs|--union] [-p|--stdout] [-q|--quiet] [--marker-size=<n>]
        <current-file> <base-file> <other-file>



3. DESCRIPTION



git merge-file incorporates all changes that lead from the <base-file> to <other-file> into <current-file>. The result ordinarily goes into <current-file>. git merge-file is useful for combining separate changes to an original. Suppose <base-file> is the original, and both <current-file> and <other-file> are modifications of <base-file>, then git merge-file combines both changes.

A conflict occurs if both <current-file> and <other-file> have changes in a common segment of lines. If a conflict is found, git merge-file normally outputs a warning and brackets the conflict with lines containing <<<<<<< and >>>>>>> markers. A typical conflict will look like this:


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<<<<<<< A
lines in file A
=======
lines in file B
>>>>>>> B

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If there are conflicts, the user should edit the result and delete one of the alternatives. When --ours, --theirs, or --union option is in effect, however, these conflicts are resolved favouring lines from <current-file>, lines from <other-file>, or lines from both respectively. The length of the conflict markers can be given with the --marker-size option.

The exit value of this program is negative on error, and the number of conflicts otherwise. If the merge was clean, the exit value is 0.

git merge-file is designed to be a minimal clone of RCS merge; that is, it implements all of RCS merge\*(Aqs functionality which is needed by git(1).

4. OPTIONS

-L <label>
This option may be given up to three times, and specifies labels to be used in place of the corresponding file names in conflict reports. That is, git merge-file -L x -L y -L z a b c generates output that looks like it came from files x, y and z instead of from files a, b and c.

-p
Send results to standard output instead of overwriting <current-file>.

-q
Quiet; do not warn about conflicts.

--ours, --theirs, --union
Instead of leaving conflicts in the file, resolve conflicts favouring our (or their or both) side of the lines.

5. EXAMPLES

git merge-file README.my README README.upstream
combines the changes of README.my and README.upstream since README, tries to merge them and writes the result into README.my.

git merge-file -L a -L b -L c tmp/a123 tmp/b234 tmp/c345
merges tmp/a123 and tmp/c345 with the base tmp/b234, but uses labels a and c instead of tmp/a123 and tmp/c345.

6. AUTHOR



Written by Johannes Schindelin <\m[blue]\ \fR\m[]\s-2\u[1]\d\s+2>

7. DOCUMENTATION



Documentation by Johannes Schindelin and the git-list <\m[blue]\ \fR\m[]\s-2\u[2]\d\s+2>, with parts copied from the original documentation of RCS merge.

8. GIT



Part of the git(1) suite

9. NOTES

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