Generate plain patches without any diffstats.
Generate diffs with <n> lines of context instead of the usual three.
Output to a specific file instead of stdout.
Specify the character used to indicate new, old or context lines in the generated patch. Normally they are
- and ' ' respectively.
Enable the heuristic that shifts diff hunk boundaries to make patches easier to read. This is the default.
Disable the indent heuristic.
Spend extra time to make sure the smallest possible diff is produced.
Generate a diff using the "patience diff" algorithm.
Generate a diff using the "histogram diff" algorithm.
Generate a diff using the "anchored diff" algorithm.
This option may be specified more than once.
If a line exists in both the source and destination, exists only once, and starts with this text, this algorithm attempts to prevent it from appearing as a deletion or addition in the output. It uses the "patience diff" algorithm internally.
Choose a diff algorithm. The variants are as follows:
The basic greedy diff algorithm. Currently, this is the default.
Spend extra time to make sure the smallest possible diff is produced.
Use "patience diff" algorithm when generating patches.
This algorithm extends the patience algorithm to "support low-occurrence common elements".
For instance, if you configured the
diff.algorithm variable to a non-default value and want to use the default one, then you have to use
Generate a diffstat. By default, as much space as necessary will be used for the filename part, and the rest for the graph part. Maximum width defaults to terminal width, or 80 columns if not connected to a terminal, and can be overridden by
<width>. The width of the filename part can be limited by giving another width
<name-width> after a comma. The width of the graph part can be limited by using
--stat-graph-width=<width> (affects all commands generating a stat graph) or by setting
diff.statGraphWidth=<width> (does not affect
git format-patch). By giving a third parameter
<count>, you can limit the output to the first
<count> lines, followed by
... if there are more.
These parameters can also be set individually with
Output a condensed summary of extended header information such as file creations or deletions ("new" or "gone", optionally "+l" if it’s a symlink) and mode changes ("+x" or "-x" for adding or removing executable bit respectively) in diffstat. The information is put between the filename part and the graph part. Implies
--stat, but shows number of added and deleted lines in decimal notation and pathname without abbreviation, to make it more machine friendly. For binary files, outputs two
- instead of saying
Output only the last line of the
--stat format containing total number of modified files, as well as number of added and deleted lines.
Output the distribution of relative amount of changes for each sub-directory. The behavior of
--dirstat can be customized by passing it a comma separated list of parameters. The defaults are controlled by the
diff.dirstat configuration variable (see git-config). The following parameters are available:
Compute the dirstat numbers by counting the lines that have been removed from the source, or added to the destination. This ignores the amount of pure code movements within a file. In other words, rearranging lines in a file is not counted as much as other changes. This is the default behavior when no parameter is given.
Compute the dirstat numbers by doing the regular line-based diff analysis, and summing the removed/added line counts. (For binary files, count 64-byte chunks instead, since binary files have no natural concept of lines). This is a more expensive
--dirstat behavior than the
changes behavior, but it does count rearranged lines within a file as much as other changes. The resulting output is consistent with what you get from the other
Compute the dirstat numbers by counting the number of files changed. Each changed file counts equally in the dirstat analysis. This is the computationally cheapest
--dirstat behavior, since it does not have to look at the file contents at all.
Count changes in a child directory for the parent directory as well. Note that when using
cumulative, the sum of the percentages reported may exceed 100%. The default (non-cumulative) behavior can be specified with the
An integer parameter specifies a cut-off percent (3% by default). Directories contributing less than this percentage of the changes are not shown in the output.
Example: The following will count changed files, while ignoring directories with less than 10% of the total amount of changed files, and accumulating child directory counts in the parent directories:
Synonym for --dirstat=cumulative
Synonym for --dirstat=files,param1,param2…
Output a condensed summary of extended header information such as creations, renames and mode changes.
Turn off rename detection, even when the configuration file gives the default to do so.
Whether to use empty blobs as rename source.
Instead of the first handful of characters, show the full pre- and post-image blob object names on the "index" line when generating patch format output.
In addition to
--full-index, output a binary diff that can be applied with
Instead of showing the full 40-byte hexadecimal object name in diff-raw format output and diff-tree header lines, show the shortest prefix that is at least
<n> hexdigits long that uniquely refers the object. In diff-patch output format,
--full-index takes higher precedence, i.e. if
--full-index is specified, full blob names will be shown regardless of
--abbrev. Non default number of digits can be specified with
Break complete rewrite changes into pairs of delete and create. This serves two purposes:
It affects the way a change that amounts to a total rewrite of a file not as a series of deletion and insertion mixed together with a very few lines that happen to match textually as the context, but as a single deletion of everything old followed by a single insertion of everything new, and the number
m controls this aspect of the -B option (defaults to 60%).
-B/70% specifies that less than 30% of the original should remain in the result for Git to consider it a total rewrite (i.e. otherwise the resulting patch will be a series of deletion and insertion mixed together with context lines).
When used with -M, a totally-rewritten file is also considered as the source of a rename (usually -M only considers a file that disappeared as the source of a rename), and the number
n controls this aspect of the -B option (defaults to 50%).
-B20% specifies that a change with addition and deletion compared to 20% or more of the file’s size are eligible for being picked up as a possible source of a rename to another file.
Detect renames. If
n is specified, it is a threshold on the similarity index (i.e. amount of addition/deletions compared to the file’s size). For example,
-M90% means Git should consider a delete/add pair to be a rename if more than 90% of the file hasn’t changed. Without a
% sign, the number is to be read as a fraction, with a decimal point before it. I.e.,
-M5 becomes 0.5, and is thus the same as
-M05 is the same as
-M5%. To limit detection to exact renames, use
-M100%. The default similarity index is 50%.
Detect copies as well as renames. See also
n is specified, it has the same meaning as for
For performance reasons, by default,
-C option finds copies only if the original file of the copy was modified in the same changeset. This flag makes the command inspect unmodified files as candidates for the source of copy. This is a very expensive operation for large projects, so use it with caution. Giving more than one
-C option has the same effect.
Omit the preimage for deletes, i.e. print only the header but not the diff between the preimage and
/dev/null. The resulting patch is not meant to be applied with
git apply; this is solely for people who want to just concentrate on reviewing the text after the change. In addition, the output obviously lacks enough information to apply such a patch in reverse, even manually, hence the name of the option.
When used together with
-B, omit also the preimage in the deletion part of a delete/create pair.
-C options involve some preliminary steps that can detect subsets of renames/copies cheaply, followed by an exhaustive fallback portion that compares all remaining unpaired destinations to all relevant sources. (For renames, only remaining unpaired sources are relevant; for copies, all original sources are relevant.) For N sources and destinations, this exhaustive check is O(N^2). This option prevents the exhaustive portion of rename/copy detection from running if the number of source/destination files involved exceeds the specified number. Defaults to diff.renameLimit. Note that a value of 0 is treated as unlimited.
Control the order in which files appear in the output. This overrides the
diff.orderFile configuration variable (see git-config). To cancel
The output order is determined by the order of glob patterns in <orderfile>. All files with pathnames that match the first pattern are output first, all files with pathnames that match the second pattern (but not the first) are output next, and so on. All files with pathnames that do not match any pattern are output last, as if there was an implicit match-all pattern at the end of the file. If multiple pathnames have the same rank (they match the same pattern but no earlier patterns), their output order relative to each other is the normal order.
<orderfile> is parsed as follows:
Blank lines are ignored, so they can be used as separators for readability.
Lines starting with a hash ("
#") are ignored, so they can be used for comments. Add a backslash ("
\") to the beginning of the pattern if it starts with a hash.
Each other line contains a single pattern.
Patterns have the same syntax and semantics as patterns used for fnmatch(3) without the FNM_PATHNAME flag, except a pathname also matches a pattern if removing any number of the final pathname components matches the pattern. For example, the pattern "
foo*bar" matches "
fooasdfbar" and "
foo/bar/baz/asdf" but not "
Discard the files before the named <file> from the output (i.e.
skip to), or move them to the end of the output (i.e.
rotate to). These were invented primarily for use of the
git difftool command, and may not be very useful otherwise.
When run from a subdirectory of the project, it can be told to exclude changes outside the directory and show pathnames relative to it with this option. When you are not in a subdirectory (e.g. in a bare repository), you can name which subdirectory to make the output relative to by giving a <path> as an argument.
--no-relative can be used to countermand both
diff.relative config option and previous
Treat all files as text.
Ignore carriage-return at the end of line when doing a comparison.
Ignore changes in whitespace at EOL.
Ignore changes in amount of whitespace. This ignores whitespace at line end, and considers all other sequences of one or more whitespace characters to be equivalent.
Ignore whitespace when comparing lines. This ignores differences even if one line has whitespace where the other line has none.
Ignore changes whose lines are all blank.
Ignore changes whose all lines match <regex>. This option may be specified more than once.
Show the context between diff hunks, up to the specified number of lines, thereby fusing hunks that are close to each other. Defaults to
diff.interHunkContext or 0 if the config option is unset.
Show whole function as context lines for each change. The function names are determined in the same way as
git diff works out patch hunk headers (see
Defining a custom hunk-header in gitattributes).
Allow an external diff helper to be executed. If you set an external diff driver with gitattributes, you need to use this option with git-log and friends.
Disallow external diff drivers.
Allow (or disallow) external text conversion filters to be run when comparing binary files. See gitattributes for details. Because textconv filters are typically a one-way conversion, the resulting diff is suitable for human consumption, but cannot be applied. For this reason, textconv filters are enabled by default only for git-diff and git-log, but not for git-format-patch or diff plumbing commands.
Ignore changes to submodules in the diff generation. <when> can be either "none", "untracked", "dirty" or "all", which is the default. Using "none" will consider the submodule modified when it either contains untracked or modified files or its HEAD differs from the commit recorded in the superproject and can be used to override any settings of the
ignore option in git-config or gitmodules. When "untracked" is used submodules are not considered dirty when they only contain untracked content (but they are still scanned for modified content). Using "dirty" ignores all changes to the work tree of submodules, only changes to the commits stored in the superproject are shown (this was the behavior until 1.7.0). Using "all" hides all changes to submodules.
Show the given source prefix instead of "a/".
Show the given destination prefix instead of "b/".
Do not show any source or destination prefix.
Prepend an additional prefix to every line of output.
By default entries added by "git add -N" appear as an existing empty file in "git diff" and a new file in "git diff --cached". This option makes the entry appear as a new file in "git diff" and non-existent in "git diff --cached". This option could be reverted with
--ita-visible-in-index. Both options are experimental and could be removed in future.