Documentation / git-apply.txton commit git-merge: make it usable as the first class UI (17bcdad)
   1git-apply(1)
   2============
   3
   4NAME
   5----
   6git-apply - Apply patch on a git index file and a work tree
   7
   8
   9SYNOPSIS
  10--------
  11[verse]
  12'git-apply' [--stat] [--numstat] [--summary] [--check] [--index] [--apply]
  13          [--no-add] [--index-info] [--allow-binary-replacement | --binary]
  14          [-R | --reverse] [--reject] [-z] [-pNUM] [-CNUM] [--inaccurate-eof]
  15          [--whitespace=<nowarn|warn|error|error-all|strip>] [--exclude=PATH]
  16          [--cached] [--verbose] [<patch>...]
  17
  18DESCRIPTION
  19-----------
  20Reads supplied diff output and applies it on a git index file
  21and a work tree.
  22
  23OPTIONS
  24-------
  25<patch>...::
  26        The files to read patch from.  '-' can be used to read
  27        from the standard input.
  28
  29--stat::
  30        Instead of applying the patch, output diffstat for the
  31        input.  Turns off "apply".
  32
  33--numstat::
  34        Similar to \--stat, but shows number of added and
  35        deleted lines in decimal notation and pathname without
  36        abbreviation, to make it more machine friendly.  Turns
  37        off "apply".
  38
  39--summary::
  40        Instead of applying the patch, output a condensed
  41        summary of information obtained from git diff extended
  42        headers, such as creations, renames and mode changes.
  43        Turns off "apply".
  44
  45--check::
  46        Instead of applying the patch, see if the patch is
  47        applicable to the current work tree and/or the index
  48        file and detects errors.  Turns off "apply".
  49
  50--index::
  51        When --check is in effect, or when applying the patch
  52        (which is the default when none of the options that
  53        disables it is in effect), make sure the patch is
  54        applicable to what the current index file records.  If
  55        the file to be patched in the work tree is not
  56        up-to-date, it is flagged as an error.  This flag also
  57        causes the index file to be updated.
  58
  59--cached::
  60        Apply a patch without touching the working tree. Instead, take the
  61        cached data, apply the patch, and store the result in the index,
  62        without using the working tree. This implies '--index'.
  63
  64--index-info::
  65        Newer git-diff output has embedded 'index information'
  66        for each blob to help identify the original version that
  67        the patch applies to.  When this flag is given, and if
  68        the original version of the blob is available locally,
  69        outputs information about them to the standard output.
  70
  71-R, --reverse::
  72        Apply the patch in reverse.
  73
  74--reject::
  75        For atomicity, gitlink:git-apply[1] by default fails the whole patch and
  76        does not touch the working tree when some of the hunks
  77        do not apply.  This option makes it apply
  78        the parts of the patch that are applicable, and leave the
  79        rejected hunks in corresponding *.rej files.
  80
  81-z::
  82        When showing the index information, do not munge paths,
  83        but use NUL terminated machine readable format.  Without
  84        this flag, the pathnames output will have TAB, LF, and
  85        backslash characters replaced with `\t`, `\n`, and `\\`,
  86        respectively.
  87
  88-p<n>::
  89        Remove <n> leading slashes from traditional diff paths. The
  90        default is 1.
  91
  92-C<n>::
  93        Ensure at least <n> lines of surrounding context match before
  94        and after each change.  When fewer lines of surrounding
  95        context exist they all must match.  By default no context is
  96        ever ignored.
  97
  98--unidiff-zero::
  99        By default, gitlink:git-apply[1] expects that the patch being
 100        applied is a unified diff with at least one line of context.
 101        This provides good safety measures, but breaks down when
 102        applying a diff generated with --unified=0. To bypass these
 103        checks use '--unidiff-zero'.
 104+
 105Note, for the reasons stated above usage of context-free patches are
 106discouraged.
 107
 108--apply::
 109        If you use any of the options marked "Turns off
 110        'apply'" above, gitlink:git-apply[1] reads and outputs the
 111        information you asked without actually applying the
 112        patch.  Give this flag after those flags to also apply
 113        the patch.
 114
 115--no-add::
 116        When applying a patch, ignore additions made by the
 117        patch.  This can be used to extract common part between
 118        two files by first running `diff` on them and applying
 119        the result with this option, which would apply the
 120        deletion part but not addition part.
 121
 122--allow-binary-replacement, --binary::
 123        Historically we did not allow binary patch applied
 124        without an explicit permission from the user, and this
 125        flag was the way to do so.  Currently we always allow binary
 126        patch application, so this is a no-op.
 127
 128--exclude=<path-pattern>::
 129        Don't apply changes to files matching the given path pattern. This can
 130        be useful when importing patchsets, where you want to exclude certain
 131        files or directories.
 132
 133--whitespace=<option>::
 134        When applying a patch, detect a new or modified line
 135        that ends with trailing whitespaces (this includes a
 136        line that solely consists of whitespaces).  By default,
 137        the command outputs warning messages and applies the
 138        patch.
 139        When gitlink:git-apply[1] is used for statistics and not applying a
 140        patch, it defaults to `nowarn`.
 141        You can use different `<option>` to control this
 142        behavior:
 143+
 144* `nowarn` turns off the trailing whitespace warning.
 145* `warn` outputs warnings for a few such errors, but applies the
 146  patch (default).
 147* `error` outputs warnings for a few such errors, and refuses
 148  to apply the patch.
 149* `error-all` is similar to `error` but shows all errors.
 150* `strip` outputs warnings for a few such errors, strips out the
 151  trailing whitespaces and applies the patch.
 152
 153--inaccurate-eof::
 154        Under certain circumstances, some versions of diff do not correctly
 155        detect a missing new-line at the end of the file. As a result, patches
 156        created by such diff programs do not record incomplete lines
 157        correctly. This option adds support for applying such patches by
 158        working around this bug.
 159
 160--verbose::
 161        Report progress to stderr. By default, only a message about the
 162        current patch being applied will be printed. This option will cause
 163        additional information to be reported.
 164
 165Configuration
 166-------------
 167
 168apply.whitespace::
 169        When no `--whitespace` flag is given from the command
 170        line, this configuration item is used as the default.
 171
 172
 173Author
 174------
 175Written by Linus Torvalds <torvalds@osdl.org>
 176
 177Documentation
 178--------------
 179Documentation by Junio C Hamano
 180
 181GIT
 182---
 183Part of the gitlink:git[7] suite
 184