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Diffstat (limited to 'Documentation/git-apply.txt')
| -rw-r--r-- | Documentation/git-apply.txt | 236 |
1 files changed, 175 insertions, 61 deletions
diff --git a/Documentation/git-apply.txt b/Documentation/git-apply.txt index 1c64a1aa82..afd2c9ae59 100644 --- a/Documentation/git-apply.txt +++ b/Documentation/git-apply.txt @@ -3,26 +3,37 @@ git-apply(1) NAME ---- -git-apply - Apply patch on a git index file and a work tree +git-apply - Apply a patch to files and/or to the index SYNOPSIS -------- [verse] -'git-apply' [--stat] [--numstat] [--summary] [--check] [--index] [--apply] - [--no-add] [--index-info] [--allow-binary-replacement] [-z] [-pNUM] - [--whitespace=<nowarn|warn|error|error-all|strip>] - [<patch>...] +'git apply' [--stat] [--numstat] [--summary] [--check] [--index] + [--apply] [--no-add] [--build-fake-ancestor=<file>] [-R | --reverse] + [--allow-binary-replacement | --binary] [--reject] [-z] + [-p<n>] [-C<n>] [--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. +Reads the supplied diff output (i.e. "a patch") and applies it to files. +With the `--index` option the patch is also applied to the index, and +with the `--cached` option the patch is only applied to the index. +Without these options, the command applies the patch only to files, +and does not require them to be in a git repository. + +This command applies the patch but does not create a commit. Use +linkgit:git-am[1] to create commits from patches generated by +linkgit:git-format-patch[1] and/or received by email. OPTIONS ------- <patch>...:: - The files to read patch from. '-' can be used to read + The files to read the patch from. '-' can be used to read from the standard input. --stat:: @@ -30,10 +41,11 @@ OPTIONS input. Turns off "apply". --numstat:: - Similar to \--stat, but shows number of added and - deleted lines in decimal notation and pathname without - abbreviation, to make it more machine friendly. Turns - off "apply". + 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 @@ -43,99 +55,201 @@ OPTIONS --check:: Instead of applying the patch, see if the patch is - applicable to the current work tree and/or the index + applicable to the current working tree and/or the index file and detects errors. Turns off "apply". --index:: - When --check is in effect, or when applying the patch + 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 + the file to be patched in the working tree is not up-to-date, it is flagged as an error. This flag also causes the index file to be updated. ---index-info:: - Newer git-diff output has embedded 'index information' +--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 version of the blob is available locally, - outputs information about them to the standard output. + 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. + When `--numstat` has been given, do not munge pathnames, + but use a NUL-terminated machine-readable format. ++ +Without this option, each pathname output will have TAB, LF, double quotes, +and backslash characters replaced with `\t`, `\n`, `\"`, and `\\`, +respectively, and the pathname will be enclosed in double quotes if +any of those replacements occurred. -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 - information you asked without actually applying the + 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 common part between - two files by first running `diff` on them and applying + 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 addition part. + deletion part but not the addition part. --allow-binary-replacement:: - When applying a patch, which is a git-enhanced patch - that was prepared to record the pre- and post-image object - name in full, and the path being patched exactly matches - the object the patch applies to (i.e. "index" line's - pre-image object name is what is in the working tree), - and the post-image object is available in the object - database, use the post-image object as the patch - result. This allows binary files to be patched in a - very limited way. - ---whitespace=<option>:: - When applying a patch, detect a new or modified line - that ends with trailing whitespaces (this includes a - line that solely consists of whitespaces). By default, - the command outputs warning messages and applies the - patch. - When `git-apply` is used for statistics and not applying a - patch, it defaults to `nowarn`. - You can use different `<option>` to control this - behaviour: +--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 (default). + 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. -* `strip` outputs warnings for a few such errors, strips out the - trailing whitespaces and applies the patch. +--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. -Author ------- -Written by Linus Torvalds <torvalds@osdl.org> +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. -Documentation --------------- -Documentation by Junio C Hamano +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. + +SEE ALSO +-------- +linkgit:git-am[1]. GIT --- -Part of the gitlink:git[7] suite - +Part of the linkgit:git[1] suite |