Documentation/git-apply.txt

   1 git-apply(1)
   2 ============
   3
   4 NAME
   5 ----
   6 git-apply - Apply a patch to files and/or to the index
   7
   8
   9 SYNOPSIS
  10 --------
  11 [verse]
  12 'git apply' [--stat] [--numstat] [--summary] [--check] [--index | --intent-to-add] [--3way]
  13           [--apply] [--no-add] [--build-fake-ancestor=<file>] [-R | --reverse]
  14           [--allow-binary-replacement | --binary] [--reject] [-z]
  15           [-p<n>] [-C<n>] [--inaccurate-eof] [--recount] [--cached]
  16           [--ignore-space-change | --ignore-whitespace]
  17           [--whitespace=(nowarn|warn|fix|error|error-all)]
  18           [--exclude=<path>] [--include=<path>] [--directory=<root>]
  19           [--verbose | --quiet] [--unsafe-paths] [--allow-empty] [<patch>...]
  20
  21 DESCRIPTION
  22 -----------
  23 Reads the supplied diff output (i.e. "a patch") and applies it to files.
  24 When running from a subdirectory in a repository, patched paths
  25 outside the directory are ignored.
  26 With the `--index` option the patch is also applied to the index, and
  27 with the `--cached` option the patch is only applied to the index.
  28 Without these options, the command applies the patch only to files,
  29 and does not require them to be in a Git repository.
  30
  31 This command applies the patch but does not create a commit.  Use
  32 linkgit:git-am[1] to create commits from patches generated by
  33 linkgit:git-format-patch[1] and/or received by email.
  34
  35 OPTIONS
  36 -------
  37 <patch>...::
  38         The files to read the patch from.  '-' can be used to read
  39         from the standard input.
  40
  41 --stat::
  42         Instead of applying the patch, output diffstat for the
  43         input.  Turns off "apply".
  44
  45 --numstat::
  46         Similar to `--stat`, but shows the number of added and
  47         deleted lines in decimal notation and the pathname without
  48         abbreviation, to make it more machine friendly.  For
  49         binary files, outputs two `-` instead of saying
  50         `0 0`.  Turns off "apply".
  51
  52 --summary::
  53         Instead of applying the patch, output a condensed
  54         summary of information obtained from git diff extended
  55         headers, such as creations, renames and mode changes.
  56         Turns off "apply".
  57
  58 --check::
  59         Instead of applying the patch, see if the patch is
  60         applicable to the current working tree and/or the index
  61         file and detects errors.  Turns off "apply".
  62
  63 --index::
  64         Apply the patch to both the index and the working tree (or
  65         merely check that it would apply cleanly to both if `--check` is
  66         in effect). Note that `--index` expects index entries and
  67         working tree copies for relevant paths to be identical (their
  68         contents and metadata such as file mode must match), and will
  69         raise an error if they are not, even if the patch would apply
  70         cleanly to both the index and the working tree in isolation.
  71
  72 --cached::
  73         Apply the patch to just the index, without touching the working
  74         tree. If `--check` is in effect, merely check that it would
  75         apply cleanly to the index entry.
  76
  77 --intent-to-add::
  78         When applying the patch only to the working tree, mark new
  79         files to be added to the index later (see `--intent-to-add`
  80         option in linkgit:git-add[1]). This option is ignored unless
  81         running in a Git repository and `--index` is not specified.
  82         Note that `--index` could be implied by other options such
  83         as `--cached` or `--3way`.
  84
  85 -3::
  86 --3way::
  87         Attempt 3-way merge if the patch records the identity of blobs it is supposed
  88         to apply to and we have those blobs available locally, possibly leaving the
  89         conflict markers in the files in the working tree for the user to
  90         resolve.  This option implies the `--index` option unless the
  91         `--cached` option is used, and is incompatible with the `--reject` option.
  92         When used with the `--cached` option, any conflicts are left at higher stages
  93         in the cache.
  94
  95 --build-fake-ancestor=<file>::
  96         Newer 'git diff' output has embedded 'index information'
  97         for each blob to help identify the original version that
  98         the patch applies to.  When this flag is given, and if
  99         the original versions of the blobs are available locally,
 100         builds a temporary index containing those blobs.
 101 +
 102 When a pure mode change is encountered (which has no index information),
 103 the information is read from the current index instead.
 104
 105 -R::
 106 --reverse::
 107         Apply the patch in reverse.
 108
 109 --reject::
 110         For atomicity, 'git apply' by default fails the whole patch and
 111         does not touch the working tree when some of the hunks
 112         do not apply.  This option makes it apply
 113         the parts of the patch that are applicable, and leave the
 114         rejected hunks in corresponding *.rej files.
 115
 116 -z::
 117         When `--numstat` has been given, do not munge pathnames,
 118         but use a NUL-terminated machine-readable format.
 119 +
 120 Without this option, pathnames with "unusual" characters are quoted as
 121 explained for the configuration variable `core.quotePath` (see
 122 linkgit:git-config[1]).
 123
 124 -p<n>::
 125         Remove <n> leading path components (separated by slashes) from
 126         traditional diff paths. E.g., with `-p2`, a patch against
 127         `a/dir/file` will be applied directly to `file`. The default is
 128         1.
 129
 130 -C<n>::
 131         Ensure at least <n> lines of surrounding context match before
 132         and after each change.  When fewer lines of surrounding
 133         context exist they all must match.  By default no context is
 134         ever ignored.
 135
 136 --unidiff-zero::
 137         By default, 'git apply' expects that the patch being
 138         applied is a unified diff with at least one line of context.
 139         This provides good safety measures, but breaks down when
 140         applying a diff generated with `--unified=0`. To bypass these
 141         checks use `--unidiff-zero`.
 142 +
 143 Note, for the reasons stated above usage of context-free patches is
 144 discouraged.
 145
 146 --apply::
 147         If you use any of the options marked "Turns off
 148         'apply'" above, 'git apply' reads and outputs the
 149         requested information without actually applying the
 150         patch.  Give this flag after those flags to also apply
 151         the patch.
 152
 153 --no-add::
 154         When applying a patch, ignore additions made by the
 155         patch.  This can be used to extract the common part between
 156         two files by first running 'diff' on them and applying
 157         the result with this option, which would apply the
 158         deletion part but not the addition part.
 159
 160 --allow-binary-replacement::
 161 --binary::
 162         Historically we did not allow binary patch applied
 163         without an explicit permission from the user, and this
 164         flag was the way to do so.  Currently we always allow binary
 165         patch application, so this is a no-op.
 166
 167 --exclude=<path-pattern>::
 168         Don't apply changes to files matching the given path pattern. This can
 169         be useful when importing patchsets, where you want to exclude certain
 170         files or directories.
 171
 172 --include=<path-pattern>::
 173         Apply changes to files matching the given path pattern. This can
 174         be useful when importing patchsets, where you want to include certain
 175         files or directories.
 176 +
 177 When `--exclude` and `--include` patterns are used, they are examined in the
 178 order they appear on the command line, and the first match determines if a
 179 patch to each path is used.  A patch to a path that does not match any
 180 include/exclude pattern is used by default if there is no include pattern
 181 on the command line, and ignored if there is any include pattern.
 182
 183 --ignore-space-change::
 184 --ignore-whitespace::
 185         When applying a patch, ignore changes in whitespace in context
 186         lines if necessary.
 187         Context lines will preserve their whitespace, and they will not
 188         undergo whitespace fixing regardless of the value of the
 189         `--whitespace` option. New lines will still be fixed, though.
 190
 191 --whitespace=<action>::
 192         When applying a patch, detect a new or modified line that has
 193         whitespace errors.  What are considered whitespace errors is
 194         controlled by `core.whitespace` configuration.  By default,
 195         trailing whitespaces (including lines that solely consist of
 196         whitespaces) and a space character that is immediately followed
 197         by a tab character inside the initial indent of the line are
 198         considered whitespace errors.
 199 +
 200 By default, the command outputs warning messages but applies the patch.
 201 When `git-apply` is used for statistics and not applying a
 202 patch, it defaults to `nowarn`.
 203 +
 204 You can use different `<action>` values to control this
 205 behavior:
 206 +
 207 * `nowarn` turns off the trailing whitespace warning.
 208 * `warn` outputs warnings for a few such errors, but applies the
 209   patch as-is (default).
 210 * `fix` outputs warnings for a few such errors, and applies the
 211   patch after fixing them (`strip` is a synonym -- the tool
 212   used to consider only trailing whitespace characters as errors, and the
 213   fix involved 'stripping' them, but modern Gits do more).
 214 * `error` outputs warnings for a few such errors, and refuses
 215   to apply the patch.
 216 * `error-all` is similar to `error` but shows all errors.
 217
 218 --inaccurate-eof::
 219         Under certain circumstances, some versions of 'diff' do not correctly
 220         detect a missing new-line at the end of the file. As a result, patches
 221         created by such 'diff' programs do not record incomplete lines
 222         correctly. This option adds support for applying such patches by
 223         working around this bug.
 224
 225 -v::
 226 --verbose::
 227         Report progress to stderr. By default, only a message about the
 228         current patch being applied will be printed. This option will cause
 229         additional information to be reported.
 230
 231 -q::
 232 --quiet::
 233         Suppress stderr output. Messages about patch status and progress
 234         will not be printed.
 235
 236 --recount::
 237         Do not trust the line counts in the hunk headers, but infer them
 238         by inspecting the patch (e.g. after editing the patch without
 239         adjusting the hunk headers appropriately).
 240
 241 --directory=<root>::
 242         Prepend <root> to all filenames.  If a "-p" argument was also passed,
 243         it is applied before prepending the new root.
 244 +
 245 For example, a patch that talks about updating `a/git-gui.sh` to `b/git-gui.sh`
 246 can be applied to the file in the working tree `modules/git-gui/git-gui.sh` by
 247 running `git apply --directory=modules/git-gui`.
 248
 249 --unsafe-paths::
 250         By default, a patch that affects outside the working area
 251         (either a Git controlled working tree, or the current working
 252         directory when "git apply" is used as a replacement of GNU
 253         patch) is rejected as a mistake (or a mischief).
 254 +
 255 When `git apply` is used as a "better GNU patch", the user can pass
 256 the `--unsafe-paths` option to override this safety check.  This option
 257 has no effect when `--index` or `--cached` is in use.
 258
 259 --allow-empty::
 260         Don't return error for patches containing no diff. This includes
 261         empty patches and patches with commit text only.
 262
 263 CONFIGURATION
 264 -------------
 265
 266 include::includes/cmd-config-section-all.txt[]
 267
 268 include::config/apply.txt[]
 269
 270 SUBMODULES
 271 ----------
 272 If the patch contains any changes to submodules then 'git apply'
 273 treats these changes as follows.
 274
 275 If `--index` is specified (explicitly or implicitly), then the submodule
 276 commits must match the index exactly for the patch to apply.  If any
 277 of the submodules are checked-out, then these check-outs are completely
 278 ignored, i.e., they are not required to be up to date or clean and they
 279 are not updated.
 280
 281 If `--index` is not specified, then the submodule commits in the patch
 282 are ignored and only the absence or presence of the corresponding
 283 subdirectory is checked and (if possible) updated.
 284
 285 SEE ALSO
 286 --------
 287 linkgit:git-am[1].
 288
 289 GIT
 290 ---
 291 Part of the linkgit:git[1] suite