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-rw-r--r--Documentation/git-merge-file.txt47
1 files changed, 37 insertions, 10 deletions
diff --git a/Documentation/git-merge-file.txt b/Documentation/git-merge-file.txt
index f856032..71915a0 100644
--- a/Documentation/git-merge-file.txt
+++ b/Documentation/git-merge-file.txt
@@ -11,19 +11,20 @@ SYNOPSIS
[verse]
'git merge-file' [-L <current-name> [-L <base-name> [-L <other-name>]]]
[--ours|--theirs|--union] [-p|--stdout] [-q|--quiet] [--marker-size=<n>]
- [--[no-]diff3] <current-file> <base-file> <other-file>
+ [--[no-]diff3] [--object-id] <current> <base> <other>
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>`,
+Given three files `<current>`, `<base>` and `<other>`,
+'git merge-file' incorporates all changes that lead from `<base>`
+to `<other>` into `<current>`. The result ordinarily goes into
+`<current>`. 'git merge-file' is useful for combining separate changes
+to an original. Suppose `<base>` is the original, and both
+`<current>` and `<other>` are modifications of `<base>`,
then 'git merge-file' combines both changes.
-A conflict occurs if both `<current-file>` and `<other-file>` have changes
+A conflict occurs if both `<current>` and `<other>` 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:
@@ -36,10 +37,14 @@ normally outputs a warning and brackets the conflict with lines containing
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
+however, these conflicts are resolved favouring lines from `<current>`,
+lines from `<other>`, or lines from both respectively. The length of the
conflict markers can be given with the `--marker-size` option.
+If `--object-id` is specified, exactly the same behavior occurs, except that
+instead of specifying what to merge as files, it is specified as a list of
+object IDs referring to blobs.
+
The exit value of this program is negative on error, and the number of
conflicts otherwise (truncated to 127 if there are more than that many
conflicts). If the merge was clean, the exit value is 0.
@@ -52,6 +57,14 @@ linkgit:git[1].
OPTIONS
-------
+--object-id::
+ Specify the contents to merge as blobs in the current repository instead of
+ files. In this case, the operation must take place within a valid repository.
++
+If the `-p` option is specified, the merged file (including conflicts, if any)
+goes to standard output as normal; otherwise, the merged file is written to the
+object store and the object ID of its blob is written to standard output.
+
-L <label>::
This option may be given up to three times, and
specifies labels to be used in place of the
@@ -62,7 +75,7 @@ OPTIONS
-p::
Send results to standard output instead of overwriting
- `<current-file>`.
+ `<current>`.
-q::
Quiet; do not warn about conflicts.
@@ -70,12 +83,21 @@ OPTIONS
--diff3::
Show conflicts in "diff3" style.
+--zdiff3::
+ Show conflicts in "zdiff3" style.
+
--ours::
--theirs::
--union::
Instead of leaving conflicts in the file, resolve conflicts
favouring our (or their or both) side of the lines.
+--diff-algorithm={patience|minimal|histogram|myers}::
+ Use a different diff algorithm while merging. The current default is "myers",
+ but selecting more recent algorithm such as "histogram" can help
+ avoid mismerges that occur due to unimportant matching lines
+ (such as braces from distinct functions). See also
+ linkgit:git-diff[1] `--diff-algorithm`.
EXAMPLES
--------
@@ -90,6 +112,11 @@ EXAMPLES
merges tmp/a123 and tmp/c345 with the base tmp/b234, but uses labels
`a` and `c` instead of `tmp/a123` and `tmp/c345`.
+`git merge-file -p --object-id abc1234 def567 890abcd`::
+
+ combines the changes of the blob abc1234 and 890abcd since def567,
+ tries to merge them and writes the result to standard output
+
GIT
---
Part of the linkgit:git[1] suite