Documentation / diff-options.txton commit Merge git://git.kernel.org/pub/scm/gitk/gitk (6bc4c72)
   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--summary::
  62        Output a condensed summary of extended header information
  63        such as creations, renames and mode changes.
  64
  65--patch-with-stat::
  66        Synonym for "-p --stat".
  67        {git-format-patch? This is the default.}
  68
  69-z::
  70        NUL-line termination on output.  This affects the --raw
  71        output field terminator.  Also output from commands such
  72        as "git-log" will be delimited with NUL between commits.
  73
  74--name-only::
  75        Show only names of changed files.
  76
  77--name-status::
  78        Show only names and status of changed files.
  79
  80--color::
  81        Show colored diff.
  82
  83--no-color::
  84        Turn off colored diff, even when the configuration file
  85        gives the default to color output.
  86
  87--color-words::
  88        Show colored word diff, i.e. color words which have changed.
  89
  90--no-renames::
  91        Turn off rename detection, even when the configuration
  92        file gives the default to do so.
  93
  94--check::
  95        Warn if changes introduce trailing whitespace
  96        or an indent that uses a space before a tab. Exits with
  97        non-zero status if problems are found. Not compatible with
  98        --exit-code.
  99
 100--full-index::
 101        Instead of the first handful characters, show full
 102        object name of pre- and post-image blob on the "index"
 103        line when generating a patch format output.
 104
 105--binary::
 106        In addition to --full-index, output "binary diff" that
 107        can be applied with "git apply".
 108
 109--abbrev[=<n>]::
 110        Instead of showing the full 40-byte hexadecimal object
 111        name in diff-raw format output and diff-tree header
 112        lines, show only handful hexdigits prefix.  This is
 113        independent of --full-index option above, which controls
 114        the diff-patch output format.  Non default number of
 115        digits can be specified with --abbrev=<n>.
 116
 117-B::
 118        Break complete rewrite changes into pairs of delete and create.
 119
 120-M::
 121        Detect renames.
 122
 123-C::
 124        Detect copies as well as renames.  See also `--find-copies-harder`.
 125
 126--diff-filter=[ACDMRTUXB*]::
 127        Select only files that are Added (`A`), Copied (`C`),
 128        Deleted (`D`), Modified (`M`), Renamed (`R`), have their
 129        type (mode) changed (`T`), are Unmerged (`U`), are
 130        Unknown (`X`), or have had their pairing Broken (`B`).
 131        Any combination of the filter characters may be used.
 132        When `*` (All-or-none) is added to the combination, all
 133        paths are selected if there is any file that matches
 134        other criteria in the comparison; if there is no file
 135        that matches other criteria, nothing is selected.
 136
 137--find-copies-harder::
 138        For performance reasons, by default, `-C` option finds copies only
 139        if the original file of the copy was modified in the same
 140        changeset.  This flag makes the command
 141        inspect unmodified files as candidates for the source of
 142        copy.  This is a very expensive operation for large
 143        projects, so use it with caution.  Giving more than one
 144        `-C` option has the same effect.
 145
 146-l<num>::
 147        -M and -C options require O(n^2) processing time where n
 148        is the number of potential rename/copy targets.  This
 149        option prevents rename/copy detection from running if
 150        the number of rename/copy targets exceeds the specified
 151        number.
 152
 153-S<string>::
 154        Look for differences that contain the change in <string>.
 155
 156--pickaxe-all::
 157        When -S finds a change, show all the changes in that
 158        changeset, not just the files that contain the change
 159        in <string>.
 160
 161--pickaxe-regex::
 162        Make the <string> not a plain string but an extended POSIX
 163        regex to match.
 164
 165-O<orderfile>::
 166        Output the patch in the order specified in the
 167        <orderfile>, which has one shell glob pattern per line.
 168
 169-R::
 170        Swap two inputs; that is, show differences from index or
 171        on-disk file to tree contents.
 172
 173--text::
 174        Treat all files as text.
 175
 176-a::
 177        Shorthand for "--text".
 178
 179--ignore-space-at-eol::
 180        Ignore changes in whitespace at EOL.
 181
 182--ignore-space-change::
 183        Ignore changes in amount of whitespace.  This ignores whitespace
 184        at line end, and considers all other sequences of one or
 185        more whitespace characters to be equivalent.
 186
 187-b::
 188        Shorthand for "--ignore-space-change".
 189
 190--ignore-all-space::
 191        Ignore whitespace when comparing lines.  This ignores
 192        differences even if one line has whitespace where the other
 193        line has none.
 194
 195-w::
 196        Shorthand for "--ignore-all-space".
 197
 198--exit-code::
 199        Make the program exit with codes similar to diff(1).
 200        That is, it exits with 1 if there were differences and
 201        0 means no differences.
 202
 203--quiet::
 204        Disable all output of the program. Implies --exit-code.
 205
 206--ext-diff::
 207        Allow an external diff helper to be executed. If you set an
 208        external diff driver with linkgit:gitattributes[5], you need
 209        to use this option with linkgit:git-log[1] and friends.
 210
 211--no-ext-diff::
 212        Disallow external diff drivers.
 213
 214--src-prefix=<prefix>::
 215        Show the given source prefix instead of "a/".
 216
 217--dst-prefix=<prefix>::
 218        Show the given destination prefix instead of "b/".
 219
 220--no-prefix::
 221        Do not show any source or destination prefix.
 222
 223For more detailed explanation on these common options, see also
 224link:diffcore.html[diffcore documentation].