Documentation / diff-options.txton commit Merge git://git.kernel.org/pub/scm/gitk/gitk (39a76bd)
   1// Please don't remove this comment as asciidoc behaves badly when
   2// the first non-empty line is ifdef/ifndef. The symptom is that
   3// without this comment the <git-diff-core> attribute conditionally
   4// defined below ends up being defined unconditionally.
   5// Last checked with asciidoc 7.0.2.
   6
   7ifndef::git-format-patch[]
   8ifndef::git-diff[]
   9ifndef::git-log[]
  10:git-diff-core: 1
  11endif::git-log[]
  12endif::git-diff[]
  13endif::git-format-patch[]
  14
  15ifdef::git-format-patch[]
  16-p::
  17        Generate patches without diffstat.
  18endif::git-format-patch[]
  19
  20ifndef::git-format-patch[]
  21-p::
  22        Generate patch (see section on generating patches).
  23        {git-diff? This is the default.}
  24endif::git-format-patch[]
  25
  26-u::
  27        Synonym for "-p".
  28
  29-U<n>::
  30        Shorthand for "--unified=<n>".
  31
  32--unified=<n>::
  33        Generate diffs with <n> lines of context instead of
  34        the usual three. Implies "-p".
  35
  36--raw::
  37        Generate the raw format.
  38        {git-diff-core? This is the default.}
  39
  40--patch-with-raw::
  41        Synonym for "-p --raw".
  42
  43--stat[=width[,name-width]]::
  44        Generate a diffstat.  You can override the default
  45        output width for 80-column terminal by "--stat=width".
  46        The width of the filename part can be controlled by
  47        giving another width to it separated by a comma.
  48
  49--numstat::
  50        Similar to \--stat, but shows number of added and
  51        deleted lines in decimal notation and pathname without
  52        abbreviation, to make it more machine friendly.  For
  53        binary files, outputs two `-` instead of saying
  54        `0 0`.
  55
  56--shortstat::
  57        Output only the last line of the --stat format containing total
  58        number of modified files, as well as number of added and deleted
  59        lines.
  60
  61--dirstat[=limit]::
  62        Output the distribution of relative amount of changes (number of lines added or
  63        removed) for each sub-directory. Directories with changes below
  64        a cut-off percent (3% by default) are not shown. The cut-off percent
  65        can be set with "--dirstat=limit". Changes in a child directory is not
  66        counted for the parent directory, unless "--cumulative" is used.
  67
  68--dirstat-by-file[=limit]::
  69        Same as --dirstat, but counts changed files instead of lines.
  70
  71--summary::
  72        Output a condensed summary of extended header information
  73        such as creations, renames and mode changes.
  74
  75--patch-with-stat::
  76        Synonym for "-p --stat".
  77        {git-format-patch? This is the default.}
  78
  79-z::
  80        NUL-line termination on output.  This affects the --raw
  81        output field terminator.  Also output from commands such
  82        as "git-log" will be delimited with NUL between commits.
  83
  84--name-only::
  85        Show only names of changed files.
  86
  87--name-status::
  88        Show only names and status of changed files. See the description
  89        of the `--diff-filter` option on what the status letters mean.
  90
  91--color::
  92        Show colored diff.
  93
  94--no-color::
  95        Turn off colored diff, even when the configuration file
  96        gives the default to color output.
  97
  98--color-words::
  99        Show colored word diff, i.e. color words which have changed.
 100
 101--no-renames::
 102        Turn off rename detection, even when the configuration
 103        file gives the default to do so.
 104
 105--check::
 106        Warn if changes introduce trailing whitespace
 107        or an indent that uses a space before a tab. Exits with
 108        non-zero status if problems are found. Not compatible with
 109        --exit-code.
 110
 111--full-index::
 112        Instead of the first handful of characters, show the full
 113        pre- and post-image blob object names on the "index"
 114        line when generating patch format output.
 115
 116--binary::
 117        In addition to --full-index, output "binary diff" that
 118        can be applied with "git apply".
 119
 120--abbrev[=<n>]::
 121        Instead of showing the full 40-byte hexadecimal object
 122        name in diff-raw format output and diff-tree header
 123        lines, show only handful hexdigits prefix.  This is
 124        independent of --full-index option above, which controls
 125        the diff-patch output format.  Non default number of
 126        digits can be specified with --abbrev=<n>.
 127
 128-B::
 129        Break complete rewrite changes into pairs of delete and create.
 130
 131-M::
 132        Detect renames.
 133
 134-C::
 135        Detect copies as well as renames.  See also `--find-copies-harder`.
 136
 137--diff-filter=[ACDMRTUXB*]::
 138        Select only files that are Added (`A`), Copied (`C`),
 139        Deleted (`D`), Modified (`M`), Renamed (`R`), have their
 140        type (i.e. regular file, symlink, submodule, ...) changed (`T`),
 141        are Unmerged (`U`), are
 142        Unknown (`X`), or have had their pairing Broken (`B`).
 143        Any combination of the filter characters may be used.
 144        When `*` (All-or-none) is added to the combination, all
 145        paths are selected if there is any file that matches
 146        other criteria in the comparison; if there is no file
 147        that matches other criteria, nothing is selected.
 148
 149--find-copies-harder::
 150        For performance reasons, by default, `-C` option finds copies only
 151        if the original file of the copy was modified in the same
 152        changeset.  This flag makes the command
 153        inspect unmodified files as candidates for the source of
 154        copy.  This is a very expensive operation for large
 155        projects, so use it with caution.  Giving more than one
 156        `-C` option has the same effect.
 157
 158-l<num>::
 159        -M and -C options require O(n^2) processing time where n
 160        is the number of potential rename/copy targets.  This
 161        option prevents rename/copy detection from running if
 162        the number of rename/copy targets exceeds the specified
 163        number.
 164
 165-S<string>::
 166        Look for differences that contain the change in <string>.
 167
 168--pickaxe-all::
 169        When -S finds a change, show all the changes in that
 170        changeset, not just the files that contain the change
 171        in <string>.
 172
 173--pickaxe-regex::
 174        Make the <string> not a plain string but an extended POSIX
 175        regex to match.
 176
 177-O<orderfile>::
 178        Output the patch in the order specified in the
 179        <orderfile>, which has one shell glob pattern per line.
 180
 181-R::
 182        Swap two inputs; that is, show differences from index or
 183        on-disk file to tree contents.
 184
 185--relative[=<path>]::
 186        When run from a subdirectory of the project, it can be
 187        told to exclude changes outside the directory and show
 188        pathnames relative to it with this option.  When you are
 189        not in a subdirectory (e.g. in a bare repository), you
 190        can name which subdirectory to make the output relative
 191        to by giving a <path> as an argument.
 192
 193--text::
 194        Treat all files as text.
 195
 196-a::
 197        Shorthand for "--text".
 198
 199--ignore-space-at-eol::
 200        Ignore changes in whitespace at EOL.
 201
 202--ignore-space-change::
 203        Ignore changes in amount of whitespace.  This ignores whitespace
 204        at line end, and considers all other sequences of one or
 205        more whitespace characters to be equivalent.
 206
 207-b::
 208        Shorthand for "--ignore-space-change".
 209
 210--ignore-all-space::
 211        Ignore whitespace when comparing lines.  This ignores
 212        differences even if one line has whitespace where the other
 213        line has none.
 214
 215-w::
 216        Shorthand for "--ignore-all-space".
 217
 218--exit-code::
 219        Make the program exit with codes similar to diff(1).
 220        That is, it exits with 1 if there were differences and
 221        0 means no differences.
 222
 223--quiet::
 224        Disable all output of the program. Implies --exit-code.
 225
 226--ext-diff::
 227        Allow an external diff helper to be executed. If you set an
 228        external diff driver with linkgit:gitattributes[5], you need
 229        to use this option with linkgit:git-log[1] and friends.
 230
 231--no-ext-diff::
 232        Disallow external diff drivers.
 233
 234--ignore-submodules::
 235        Ignore changes to submodules in the diff generation.
 236
 237--src-prefix=<prefix>::
 238        Show the given source prefix instead of "a/".
 239
 240--dst-prefix=<prefix>::
 241        Show the given destination prefix instead of "b/".
 242
 243--no-prefix::
 244        Do not show any source or destination prefix.
 245
 246For more detailed explanation on these common options, see also
 247linkgit:gitdiffcore[7].