MERGE
Section: User Commands (1)
Updated: 1991/02/28
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NAME
merge - three-way file merge
SYNOPSIS
merge
[
-L
label1
[
-L
label3
] ] [
-p
] [
-q
]
file1 file2 file3
DESCRIPTION
merge
incorporates all changes that lead from
file2
to
file3
into
file1.
The result goes to standard output if
-p
is present, into
file1
otherwise.
merge
is useful for combining separate changes to an original. Suppose
file2
is the original, and both
file1
and
file3
are modifications of
file2.
Then
merge
combines both changes.
An overlap occurs if both
file1
and
file3
have changes in a common segment of lines.
On a few older hosts where
diff3
does not support the
-E
option,
merge
does not detect overlaps, and merely supplies the changed lines from
file3.
On most hosts, if overlaps occur,
merge
outputs a message (unless the
-q
option is given),
and includes both alternatives
in the result. The alternatives are delimited as follows:
-
<<<<<<< file1
lines in file1
=======
lines in file3
>>>>>>> file3
If there are overlaps, the user should edit the result and delete one of the
alternatives.
If the
-L label1
and
-L label3
options are given, the labels are output in place of the names
file1
and
file3
in overlap reports.
DIAGNOSTICS
Exit status is 0 for no overlaps, 1 for some overlaps, 2 for trouble.
IDENTIFICATION
Author: Walter F. Tichy.
Revision Number: 5.3; Release Date: 1991/02/28.
Copyright © 1982, 1988, 1989 by Walter F. Tichy.
Copyright © 1990, 1991 by Paul Eggert.
SEE ALSO
diff3(1), diff(1), rcsmerge(1), co(1).
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- DIAGNOSTICS
-
- IDENTIFICATION
-
- SEE ALSO
-
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