Documentation/git-apply.txt - git - Git at Google


            
            git-apply(1)

            
            ============


            NAME

            
            ----

            
            git-apply - Apply a patch on a git index file and/or a working tree


            SYNOPSIS

            
            --------

            
            [verse]

            
            'git apply' [--stat] [--numstat] [--summary] [--check] [--index]

            
            	  [--apply] [--no-add] [--build-fake-ancestor=<file>] [-R | --reverse]

            
            	  [--allow-binary-replacement | --binary] [--reject] [-z]

            
            	  [-pNUM] [-CNUM] [--inaccurate-eof] [--recount] [--cached]

            
            	  [--ignore-space-change | --ignore-whitespace ]

            
            	  [--whitespace=<nowarn|warn|fix|error|error-all>]

            
            	  [--exclude=PATH] [--include=PATH] [--directory=<root>]

            
            	  [--verbose] [<patch>...]


            DESCRIPTION

            
            -----------

            
            Reads supplied 'diff' output and applies it on a git index file

            
            and a work tree.


            OPTIONS

            
            -------

            
            <patch>...::

            
            	The files to read the patch from.  '-' can be used to read

            
            	from the standard input.


            --stat::

            
            	Instead of applying the patch, output diffstat for the

            
            	input.  Turns off "apply".


            --numstat::

            
            	Similar to \--stat, but shows the number of added and

            
            	deleted lines in decimal notation and the pathname without

            
            	abbreviation, to make it more machine friendly.  For

            
            	binary files, outputs two `-` instead of saying

            
            	`0 0`.  Turns off "apply".


            --summary::

            
            	Instead of applying the patch, output a condensed

            
            	summary of information obtained from git diff extended

            
            	headers, such as creations, renames and mode changes.

            
            	Turns off "apply".


            --check::

            
            	Instead of applying the patch, see if the patch is

            
            	applicable to the current work tree and/or the index

            
            	file and detects errors.  Turns off "apply".


            --index::

            
            	When --check is in effect, or when applying the patch

            
            	(which is the default when none of the options that

            
            	disables it is in effect), make sure the patch is

            
            	applicable to what the current index file records.  If

            
            	the file to be patched in the work tree is not

            
            	up-to-date, it is flagged as an error.  This flag also

            
            	causes the index file to be updated.


            --cached::

            
            	Apply a patch without touching the working tree. Instead take the

            
            	cached data, apply the patch, and store the result in the index

            
            	without using the working tree. This implies '--index'.


            --build-fake-ancestor=<file>::

            
            	Newer 'git-diff' output has embedded 'index information'

            
            	for each blob to help identify the original version that

            
            	the patch applies to.  When this flag is given, and if

            
            	the original versions of the blobs are available locally,

            
            	builds a temporary index containing those blobs.

            
            +

            
            When a pure mode change is encountered (which has no index information),

            
            the information is read from the current index instead.


            -R::

            
            --reverse::

            
            	Apply the patch in reverse.


            --reject::

            
            	For atomicity, 'git-apply' by default fails the whole patch and

            
            	does not touch the working tree when some of the hunks

            
            	do not apply.  This option makes it apply

            
            	the parts of the patch that are applicable, and leave the

            
            	rejected hunks in corresponding *.rej files.


            -z::

            
            	When showing the index information, do not munge paths,

            
            	but use NUL terminated machine readable format.  Without

            
            	this flag, the pathnames output will have TAB, LF, and

            
            	backslash characters replaced with `\t`, `\n`, and `\\`,

            
            	respectively.


            -p<n>::

            
            	Remove <n> leading slashes from traditional diff paths. The

            
            	default is 1.


            -C<n>::

            
            	Ensure at least <n> lines of surrounding context match before

            
            	and after each change.  When fewer lines of surrounding

            
            	context exist they all must match.  By default no context is

            
            	ever ignored.


            --unidiff-zero::

            
            	By default, 'git-apply' expects that the patch being

            
            	applied is a unified diff with at least one line of context.

            
            	This provides good safety measures, but breaks down when

            
            	applying a diff generated with --unified=0. To bypass these

            
            	checks use '--unidiff-zero'.

            
            +

            
            Note, for the reasons stated above usage of context-free patches is

            
            discouraged.


            --apply::

            
            	If you use any of the options marked "Turns off

            
            	'apply'" above, 'git-apply' reads and outputs the

            
            	requested information without actually applying the

            
            	patch.  Give this flag after those flags to also apply

            
            	the patch.


            --no-add::

            
            	When applying a patch, ignore additions made by the

            
            	patch.  This can be used to extract the common part between

            
            	two files by first running 'diff' on them and applying

            
            	the result with this option, which would apply the

            
            	deletion part but not the addition part.


            --allow-binary-replacement::

            
            --binary::

            
            	Historically we did not allow binary patch applied

            
            	without an explicit permission from the user, and this

            
            	flag was the way to do so.  Currently we always allow binary

            
            	patch application, so this is a no-op.


            --exclude=<path-pattern>::

            
            	Don't apply changes to files matching the given path pattern. This can

            
            	be useful when importing patchsets, where you want to exclude certain

            
            	files or directories.


            --include=<path-pattern>::

            
            	Apply changes to files matching the given path pattern. This can

            
            	be useful when importing patchsets, where you want to include certain

            
            	files or directories.

            
            +

            
            When --exclude and --include patterns are used, they are examined in the

            
            order they appear on the command line, and the first match determines if a

            
            patch to each path is used.  A patch to a path that does not match any

            
            include/exclude pattern is used by default if there is no include pattern

            
            on the command line, and ignored if there is any include pattern.


            --ignore-space-change::

            
            --ignore-whitespace::

            
            	When applying a patch, ignore changes in whitespace in context

            
            	lines if necessary.

            
            	Context lines will preserve their whitespace, and they will not

            
            	undergo whitespace fixing regardless of the value of the

            
            	`--whitespace` option. New lines will still be fixed, though.


            --whitespace=<action>::

            
            	When applying a patch, detect a new or modified line that has

            
            	whitespace errors.  What are considered whitespace errors is

            
            	controlled by `core.whitespace` configuration.  By default,

            
            	trailing whitespaces (including lines that solely consist of

            
            	whitespaces) and a space character that is immediately followed

            
            	by a tab character inside the initial indent of the line are

            
            	considered whitespace errors.

            
            +

            
            By default, the command outputs warning messages but applies the patch.

            
            When `git-apply` is used for statistics and not applying a

            
            patch, it defaults to `nowarn`.

            
            +

            
            You can use different `<action>` values to control this

            
            behavior:

            
            +

            
            * `nowarn` turns off the trailing whitespace warning.

            
            * `warn` outputs warnings for a few such errors, but applies the

            
              patch as-is (default).

            
            * `fix` outputs warnings for a few such errors, and applies the

            
              patch after fixing them (`strip` is a synonym --- the tool

            
              used to consider only trailing whitespace characters as errors, and the

            
              fix involved 'stripping' them, but modern gits do more).

            
            * `error` outputs warnings for a few such errors, and refuses

            
              to apply the patch.

            
            * `error-all` is similar to `error` but shows all errors.


            --inaccurate-eof::

            
            	Under certain circumstances, some versions of 'diff' do not correctly

            
            	detect a missing new-line at the end of the file. As a result, patches

            
            	created by such 'diff' programs do not record incomplete lines

            
            	correctly. This option adds support for applying such patches by

            
            	working around this bug.


            -v::

            
            --verbose::

            
            	Report progress to stderr. By default, only a message about the

            
            	current patch being applied will be printed. This option will cause

            
            	additional information to be reported.


            --recount::

            
            	Do not trust the line counts in the hunk headers, but infer them

            
            	by inspecting the patch (e.g. after editing the patch without

            
            	adjusting the hunk headers appropriately).


            --directory=<root>::

            
            	Prepend <root> to all filenames.  If a "-p" argument was also passed,

            
            	it is applied before prepending the new root.

            
            +

            
            For example, a patch that talks about updating `a/git-gui.sh` to `b/git-gui.sh`

            
            can be applied to the file in the working tree `modules/git-gui/git-gui.sh` by

            
            running `git apply --directory=modules/git-gui`.


            Configuration

            
            -------------


            apply.ignorewhitespace::

            
            	Set to 'change' if you want changes in whitespace to be ignored by default.

            
            	Set to one of: no, none, never, false if you want changes in

            
            	whitespace to be significant.

            
            apply.whitespace::

            
            	When no `--whitespace` flag is given from the command

            
            	line, this configuration item is used as the default.


            Submodules

            
            ----------

            
            If the patch contains any changes to submodules then 'git-apply'

            
            treats these changes as follows.


            If --index is specified (explicitly or implicitly), then the submodule

            
            commits must match the index exactly for the patch to apply.  If any

            
            of the submodules are checked-out, then these check-outs are completely

            
            ignored, i.e., they are not required to be up-to-date or clean and they

            
            are not updated.


            If --index is not specified, then the submodule commits in the patch

            
            are ignored and only the absence or presence of the corresponding

            
            subdirectory is checked and (if possible) updated.


            Author

            
            ------

            
            Written by Linus Torvalds <torvalds@osdl.org>


            Documentation

            
            --------------

            
            Documentation by Junio C Hamano


            GIT

            
            ---

            
            Part of the linkgit:git[1] suite
	git-apply(1)
	============

	NAME
	----
	git-apply - Apply a patch on a git index file and/or a working tree


	SYNOPSIS
	--------
	[verse]
	'git apply' [--stat] [--numstat] [--summary] [--check] [--index]
	[--apply] [--no-add] [--build-fake-ancestor=<file>] [-R \| --reverse]
	[--allow-binary-replacement \| --binary] [--reject] [-z]
	[-pNUM] [-CNUM] [--inaccurate-eof] [--recount] [--cached]
	[--ignore-space-change \| --ignore-whitespace ]
	[--whitespace=<nowarn\|warn\|fix\|error\|error-all>]
	[--exclude=PATH] [--include=PATH] [--directory=<root>]
	[--verbose] [<patch>...]

	DESCRIPTION
	-----------
	Reads supplied 'diff' output and applies it on a git index file
	and a work tree.

	OPTIONS
	-------
	<patch>...::
	The files to read the patch from. '-' can be used to read
	from the standard input.

	--stat::
	Instead of applying the patch, output diffstat for the
	input. Turns off "apply".

	--numstat::
	Similar to \--stat, but shows the number of added and
	deleted lines in decimal notation and the pathname without
	abbreviation, to make it more machine friendly. For
	binary files, outputs two `-` instead of saying
	`0 0`. Turns off "apply".

	--summary::
	Instead of applying the patch, output a condensed
	summary of information obtained from git diff extended
	headers, such as creations, renames and mode changes.
	Turns off "apply".

	--check::
	Instead of applying the patch, see if the patch is
	applicable to the current work tree and/or the index
	file and detects errors. Turns off "apply".

	--index::
	When --check is in effect, or when applying the patch
	(which is the default when none of the options that
	disables it is in effect), make sure the patch is
	applicable to what the current index file records. If
	the file to be patched in the work tree is not
	up-to-date, it is flagged as an error. This flag also
	causes the index file to be updated.

	--cached::
	Apply a patch without touching the working tree. Instead take the
	cached data, apply the patch, and store the result in the index
	without using the working tree. This implies '--index'.

	--build-fake-ancestor=<file>::
	Newer 'git-diff' output has embedded 'index information'
	for each blob to help identify the original version that
	the patch applies to. When this flag is given, and if
	the original versions of the blobs are available locally,
	builds a temporary index containing those blobs.
	+
	When a pure mode change is encountered (which has no index information),
	the information is read from the current index instead.

	-R::
	--reverse::
	Apply the patch in reverse.

	--reject::
	For atomicity, 'git-apply' by default fails the whole patch and
	does not touch the working tree when some of the hunks
	do not apply. This option makes it apply
	the parts of the patch that are applicable, and leave the
	rejected hunks in corresponding *.rej files.

	-z::
	When showing the index information, do not munge paths,
	but use NUL terminated machine readable format. Without
	this flag, the pathnames output will have TAB, LF, and
	backslash characters replaced with `\t`, `\n`, and `\\`,
	respectively.

	-p<n>::
	Remove <n> leading slashes from traditional diff paths. The
	default is 1.

	-C<n>::
	Ensure at least <n> lines of surrounding context match before
	and after each change. When fewer lines of surrounding
	context exist they all must match. By default no context is
	ever ignored.

	--unidiff-zero::
	By default, 'git-apply' expects that the patch being
	applied is a unified diff with at least one line of context.
	This provides good safety measures, but breaks down when
	applying a diff generated with --unified=0. To bypass these
	checks use '--unidiff-zero'.
	+
	Note, for the reasons stated above usage of context-free patches is
	discouraged.

	--apply::
	If you use any of the options marked "Turns off
	'apply'" above, 'git-apply' reads and outputs the
	requested information without actually applying the
	patch. Give this flag after those flags to also apply
	the patch.

	--no-add::
	When applying a patch, ignore additions made by the
	patch. This can be used to extract the common part between
	two files by first running 'diff' on them and applying
	the result with this option, which would apply the
	deletion part but not the addition part.

	--allow-binary-replacement::
	--binary::
	Historically we did not allow binary patch applied
	without an explicit permission from the user, and this
	flag was the way to do so. Currently we always allow binary
	patch application, so this is a no-op.

	--exclude=<path-pattern>::
	Don't apply changes to files matching the given path pattern. This can
	be useful when importing patchsets, where you want to exclude certain
	files or directories.

	--include=<path-pattern>::
	Apply changes to files matching the given path pattern. This can
	be useful when importing patchsets, where you want to include certain
	files or directories.
	+
	When --exclude and --include patterns are used, they are examined in the
	order they appear on the command line, and the first match determines if a
	patch to each path is used. A patch to a path that does not match any
	include/exclude pattern is used by default if there is no include pattern
	on the command line, and ignored if there is any include pattern.

	--ignore-space-change::
	--ignore-whitespace::
	When applying a patch, ignore changes in whitespace in context
	lines if necessary.
	Context lines will preserve their whitespace, and they will not
	undergo whitespace fixing regardless of the value of the
	`--whitespace` option. New lines will still be fixed, though.

	--whitespace=<action>::
	When applying a patch, detect a new or modified line that has
	whitespace errors. What are considered whitespace errors is
	controlled by `core.whitespace` configuration. By default,
	trailing whitespaces (including lines that solely consist of
	whitespaces) and a space character that is immediately followed
	by a tab character inside the initial indent of the line are
	considered whitespace errors.
	+
	By default, the command outputs warning messages but applies the patch.
	When `git-apply` is used for statistics and not applying a
	patch, it defaults to `nowarn`.
	+
	You can use different `<action>` values to control this
	behavior:
	+
	* `nowarn` turns off the trailing whitespace warning.
	* `warn` outputs warnings for a few such errors, but applies the
	patch as-is (default).
	* `fix` outputs warnings for a few such errors, and applies the
	patch after fixing them (`strip` is a synonym --- the tool
	used to consider only trailing whitespace characters as errors, and the
	fix involved 'stripping' them, but modern gits do more).
	* `error` outputs warnings for a few such errors, and refuses
	to apply the patch.
	* `error-all` is similar to `error` but shows all errors.

	--inaccurate-eof::
	Under certain circumstances, some versions of 'diff' do not correctly
	detect a missing new-line at the end of the file. As a result, patches
	created by such 'diff' programs do not record incomplete lines
	correctly. This option adds support for applying such patches by
	working around this bug.

	-v::
	--verbose::
	Report progress to stderr. By default, only a message about the
	current patch being applied will be printed. This option will cause
	additional information to be reported.

	--recount::
	Do not trust the line counts in the hunk headers, but infer them
	by inspecting the patch (e.g. after editing the patch without
	adjusting the hunk headers appropriately).

	--directory=<root>::
	Prepend <root> to all filenames. If a "-p" argument was also passed,
	it is applied before prepending the new root.
	+
	For example, a patch that talks about updating `a/git-gui.sh` to `b/git-gui.sh`
	can be applied to the file in the working tree `modules/git-gui/git-gui.sh` by
	running `git apply --directory=modules/git-gui`.

	Configuration
	-------------

	apply.ignorewhitespace::
	Set to 'change' if you want changes in whitespace to be ignored by default.
	Set to one of: no, none, never, false if you want changes in
	whitespace to be significant.
	apply.whitespace::
	When no `--whitespace` flag is given from the command
	line, this configuration item is used as the default.

	Submodules
	----------
	If the patch contains any changes to submodules then 'git-apply'
	treats these changes as follows.

	If --index is specified (explicitly or implicitly), then the submodule
	commits must match the index exactly for the patch to apply. If any
	of the submodules are checked-out, then these check-outs are completely
	ignored, i.e., they are not required to be up-to-date or clean and they
	are not updated.

	If --index is not specified, then the submodule commits in the patch
	are ignored and only the absence or presence of the corresponding
	subdirectory is checked and (if possible) updated.

	Author
	------
	Written by Linus Torvalds <torvalds@osdl.org>

	Documentation
	--------------
	Documentation by Junio C Hamano

	GIT
	---
	Part of the linkgit:git[1] suite