Documentation / diff-options.txton commit Merge branch 'tc/format-attribute' (82f05d5)
   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--no-stat::
  18        Generate plain patches without any diffstats.
  19endif::git-format-patch[]
  20
  21ifndef::git-format-patch[]
  22-p::
  23-u::
  24        Generate patch (see section on generating patches).
  25        {git-diff? This is the default.}
  26endif::git-format-patch[]
  27
  28-U<n>::
  29--unified=<n>::
  30        Generate diffs with <n> lines of context instead of
  31        the usual three.
  32ifndef::git-format-patch[]
  33        Implies `-p`.
  34endif::git-format-patch[]
  35
  36ifndef::git-format-patch[]
  37--raw::
  38        Generate the raw format.
  39        {git-diff-core? This is the default.}
  40endif::git-format-patch[]
  41
  42ifndef::git-format-patch[]
  43--patch-with-raw::
  44        Synonym for `-p --raw`.
  45endif::git-format-patch[]
  46
  47--patience::
  48        Generate a diff using the "patience diff" algorithm.
  49
  50--stat[=width[,name-width]]::
  51        Generate a diffstat.  You can override the default
  52        output width for 80-column terminal by `--stat=width`.
  53        The width of the filename part can be controlled by
  54        giving another width to it separated by a comma.
  55
  56--numstat::
  57        Similar to `\--stat`, but shows number of added and
  58        deleted lines in decimal notation and pathname without
  59        abbreviation, to make it more machine friendly.  For
  60        binary files, outputs two `-` instead of saying
  61        `0 0`.
  62
  63--shortstat::
  64        Output only the last line of the `--stat` format containing total
  65        number of modified files, as well as number of added and deleted
  66        lines.
  67
  68--dirstat[=limit]::
  69        Output the distribution of relative amount of changes (number of lines added or
  70        removed) for each sub-directory. Directories with changes below
  71        a cut-off percent (3% by default) are not shown. The cut-off percent
  72        can be set with `--dirstat=limit`. Changes in a child directory is not
  73        counted for the parent directory, unless `--cumulative` is used.
  74
  75--dirstat-by-file[=limit]::
  76        Same as `--dirstat`, but counts changed files instead of lines.
  77
  78--summary::
  79        Output a condensed summary of extended header information
  80        such as creations, renames and mode changes.
  81
  82ifndef::git-format-patch[]
  83--patch-with-stat::
  84        Synonym for `-p --stat`.
  85endif::git-format-patch[]
  86
  87ifndef::git-format-patch[]
  88-z::
  89        NUL-line termination on output.  This affects the `--raw`
  90        output field terminator.  Also output from commands such
  91        as `git-log` will be delimited with NUL between commits.
  92
  93--name-only::
  94        Show only names of changed files.
  95
  96--name-status::
  97        Show only names and status of changed files. See the description
  98        of the `--diff-filter` option on what the status letters mean.
  99
 100--submodule[=<format>]::
 101        Chose the output format for submodule differences. <format> can be one of
 102        'short' and 'log'. 'short' just shows pairs of commit names, this format
 103        is used when this option is not given. 'log' is the default value for this
 104        option and lists the commits in that commit range like the 'summary'
 105        option of linkgit:git-submodule[1] does.
 106
 107--color::
 108        Show colored diff.
 109
 110--no-color::
 111        Turn off colored diff, even when the configuration file
 112        gives the default to color output.
 113
 114--color-words[=<regex>]::
 115        Show colored word diff, i.e., color words which have changed.
 116        By default, words are separated by whitespace.
 117+
 118When a <regex> is specified, every non-overlapping match of the
 119<regex> is considered a word.  Anything between these matches is
 120considered whitespace and ignored(!) for the purposes of finding
 121differences.  You may want to append `|[^[:space:]]` to your regular
 122expression to make sure that it matches all non-whitespace characters.
 123A match that contains a newline is silently truncated(!) at the
 124newline.
 125+
 126The regex can also be set via a diff driver or configuration option, see
 127linkgit:gitattributes[1] or linkgit:git-config[1].  Giving it explicitly
 128overrides any diff driver or configuration setting.  Diff drivers
 129override configuration settings.
 130endif::git-format-patch[]
 131
 132--no-renames::
 133        Turn off rename detection, even when the configuration
 134        file gives the default to do so.
 135
 136ifndef::git-format-patch[]
 137--check::
 138        Warn if changes introduce trailing whitespace
 139        or an indent that uses a space before a tab. Exits with
 140        non-zero status if problems are found. Not compatible with
 141        --exit-code.
 142endif::git-format-patch[]
 143
 144--full-index::
 145        Instead of the first handful of characters, show the full
 146        pre- and post-image blob object names on the "index"
 147        line when generating patch format output.
 148
 149--binary::
 150        In addition to `--full-index`, output a binary diff that
 151        can be applied with `git-apply`.
 152
 153--abbrev[=<n>]::
 154        Instead of showing the full 40-byte hexadecimal object
 155        name in diff-raw format output and diff-tree header
 156        lines, show only a partial prefix.  This is
 157        independent of the `--full-index` option above, which controls
 158        the diff-patch output format.  Non default number of
 159        digits can be specified with `--abbrev=<n>`.
 160
 161-B::
 162        Break complete rewrite changes into pairs of delete and create.
 163
 164-M::
 165        Detect renames.
 166
 167-C::
 168        Detect copies as well as renames.  See also `--find-copies-harder`.
 169
 170ifndef::git-format-patch[]
 171--diff-filter=[ACDMRTUXB*]::
 172        Select only files that are Added (`A`), Copied (`C`),
 173        Deleted (`D`), Modified (`M`), Renamed (`R`), have their
 174        type (i.e. regular file, symlink, submodule, ...) changed (`T`),
 175        are Unmerged (`U`), are
 176        Unknown (`X`), or have had their pairing Broken (`B`).
 177        Any combination of the filter characters may be used.
 178        When `*` (All-or-none) is added to the combination, all
 179        paths are selected if there is any file that matches
 180        other criteria in the comparison; if there is no file
 181        that matches other criteria, nothing is selected.
 182endif::git-format-patch[]
 183
 184--find-copies-harder::
 185        For performance reasons, by default, `-C` option finds copies only
 186        if the original file of the copy was modified in the same
 187        changeset.  This flag makes the command
 188        inspect unmodified files as candidates for the source of
 189        copy.  This is a very expensive operation for large
 190        projects, so use it with caution.  Giving more than one
 191        `-C` option has the same effect.
 192
 193-l<num>::
 194        The `-M` and `-C` options require O(n^2) processing time where n
 195        is the number of potential rename/copy targets.  This
 196        option prevents rename/copy detection from running if
 197        the number of rename/copy targets exceeds the specified
 198        number.
 199
 200ifndef::git-format-patch[]
 201-S<string>::
 202        Look for differences that introduce or remove an instance of
 203        <string>. Note that this is different than the string simply
 204        appearing in diff output; see the 'pickaxe' entry in
 205        linkgit:gitdiffcore[7] for more details.
 206
 207--pickaxe-all::
 208        When `-S` finds a change, show all the changes in that
 209        changeset, not just the files that contain the change
 210        in <string>.
 211
 212--pickaxe-regex::
 213        Make the <string> not a plain string but an extended POSIX
 214        regex to match.
 215endif::git-format-patch[]
 216
 217-O<orderfile>::
 218        Output the patch in the order specified in the
 219        <orderfile>, which has one shell glob pattern per line.
 220
 221ifndef::git-format-patch[]
 222-R::
 223        Swap two inputs; that is, show differences from index or
 224        on-disk file to tree contents.
 225
 226--relative[=<path>]::
 227        When run from a subdirectory of the project, it can be
 228        told to exclude changes outside the directory and show
 229        pathnames relative to it with this option.  When you are
 230        not in a subdirectory (e.g. in a bare repository), you
 231        can name which subdirectory to make the output relative
 232        to by giving a <path> as an argument.
 233endif::git-format-patch[]
 234
 235-a::
 236--text::
 237        Treat all files as text.
 238
 239--ignore-space-at-eol::
 240        Ignore changes in whitespace at EOL.
 241
 242-b::
 243--ignore-space-change::
 244        Ignore changes in amount of whitespace.  This ignores whitespace
 245        at line end, and considers all other sequences of one or
 246        more whitespace characters to be equivalent.
 247
 248-w::
 249--ignore-all-space::
 250        Ignore whitespace when comparing lines.  This ignores
 251        differences even if one line has whitespace where the other
 252        line has none.
 253
 254--inter-hunk-context=<lines>::
 255        Show the context between diff hunks, up to the specified number
 256        of lines, thereby fusing hunks that are close to each other.
 257
 258ifndef::git-format-patch[]
 259--exit-code::
 260        Make the program exit with codes similar to diff(1).
 261        That is, it exits with 1 if there were differences and
 262        0 means no differences.
 263
 264--quiet::
 265        Disable all output of the program. Implies `--exit-code`.
 266endif::git-format-patch[]
 267
 268--ext-diff::
 269        Allow an external diff helper to be executed. If you set an
 270        external diff driver with linkgit:gitattributes[5], you need
 271        to use this option with linkgit:git-log[1] and friends.
 272
 273--no-ext-diff::
 274        Disallow external diff drivers.
 275
 276--ignore-submodules::
 277        Ignore changes to submodules in the diff generation.
 278
 279--src-prefix=<prefix>::
 280        Show the given source prefix instead of "a/".
 281
 282--dst-prefix=<prefix>::
 283        Show the given destination prefix instead of "b/".
 284
 285--no-prefix::
 286        Do not show any source or destination prefix.
 287
 288For more detailed explanation on these common options, see also
 289linkgit:gitdiffcore[7].