Documentation / diff-config.txton commit push: allow already-exists advice to be disabled (b450568)
   1diff.autorefreshindex::
   2        When using 'git diff' to compare with work tree
   3        files, do not consider stat-only change as changed.
   4        Instead, silently run `git update-index --refresh` to
   5        update the cached stat information for paths whose
   6        contents in the work tree match the contents in the
   7        index.  This option defaults to true.  Note that this
   8        affects only 'git diff' Porcelain, and not lower level
   9        'diff' commands such as 'git diff-files'.
  10
  11diff.dirstat::
  12        A comma separated list of `--dirstat` parameters specifying the
  13        default behavior of the `--dirstat` option to linkgit:git-diff[1]`
  14        and friends. The defaults can be overridden on the command line
  15        (using `--dirstat=<param1,param2,...>`). The fallback defaults
  16        (when not changed by `diff.dirstat`) are `changes,noncumulative,3`.
  17        The following parameters are available:
  18+
  19--
  20`changes`;;
  21        Compute the dirstat numbers by counting the lines that have been
  22        removed from the source, or added to the destination. This ignores
  23        the amount of pure code movements within a file.  In other words,
  24        rearranging lines in a file is not counted as much as other changes.
  25        This is the default behavior when no parameter is given.
  26`lines`;;
  27        Compute the dirstat numbers by doing the regular line-based diff
  28        analysis, and summing the removed/added line counts. (For binary
  29        files, count 64-byte chunks instead, since binary files have no
  30        natural concept of lines). This is a more expensive `--dirstat`
  31        behavior than the `changes` behavior, but it does count rearranged
  32        lines within a file as much as other changes. The resulting output
  33        is consistent with what you get from the other `--*stat` options.
  34`files`;;
  35        Compute the dirstat numbers by counting the number of files changed.
  36        Each changed file counts equally in the dirstat analysis. This is
  37        the computationally cheapest `--dirstat` behavior, since it does
  38        not have to look at the file contents at all.
  39`cumulative`;;
  40        Count changes in a child directory for the parent directory as well.
  41        Note that when using `cumulative`, the sum of the percentages
  42        reported may exceed 100%. The default (non-cumulative) behavior can
  43        be specified with the `noncumulative` parameter.
  44<limit>;;
  45        An integer parameter specifies a cut-off percent (3% by default).
  46        Directories contributing less than this percentage of the changes
  47        are not shown in the output.
  48--
  49+
  50Example: The following will count changed files, while ignoring
  51directories with less than 10% of the total amount of changed files,
  52and accumulating child directory counts in the parent directories:
  53`files,10,cumulative`.
  54
  55diff.statGraphWidth::
  56        Limit the width of the graph part in --stat output. If set, applies
  57        to all commands generating --stat output except format-patch.
  58
  59diff.context::
  60        Generate diffs with <n> lines of context instead of the default of
  61        3. This value is overridden by the -U option.
  62
  63diff.external::
  64        If this config variable is set, diff generation is not
  65        performed using the internal diff machinery, but using the
  66        given command.  Can be overridden with the `GIT_EXTERNAL_DIFF'
  67        environment variable.  The command is called with parameters
  68        as described under "git Diffs" in linkgit:git[1].  Note: if
  69        you want to use an external diff program only on a subset of
  70        your files, you might want to use linkgit:gitattributes[5] instead.
  71
  72diff.ignoreSubmodules::
  73        Sets the default value of --ignore-submodules. Note that this
  74        affects only 'git diff' Porcelain, and not lower level 'diff'
  75        commands such as 'git diff-files'. 'git checkout' also honors
  76        this setting when reporting uncommitted changes.
  77
  78diff.mnemonicprefix::
  79        If set, 'git diff' uses a prefix pair that is different from the
  80        standard "a/" and "b/" depending on what is being compared.  When
  81        this configuration is in effect, reverse diff output also swaps
  82        the order of the prefixes:
  83`git diff`;;
  84        compares the (i)ndex and the (w)ork tree;
  85`git diff HEAD`;;
  86         compares a (c)ommit and the (w)ork tree;
  87`git diff --cached`;;
  88        compares a (c)ommit and the (i)ndex;
  89`git diff HEAD:file1 file2`;;
  90        compares an (o)bject and a (w)ork tree entity;
  91`git diff --no-index a b`;;
  92        compares two non-git things (1) and (2).
  93
  94diff.noprefix::
  95        If set, 'git diff' does not show any source or destination prefix.
  96
  97diff.renameLimit::
  98        The number of files to consider when performing the copy/rename
  99        detection; equivalent to the 'git diff' option '-l'.
 100
 101diff.renames::
 102        Tells git to detect renames.  If set to any boolean value, it
 103        will enable basic rename detection.  If set to "copies" or
 104        "copy", it will detect copies, as well.
 105
 106diff.suppressBlankEmpty::
 107        A boolean to inhibit the standard behavior of printing a space
 108        before each empty output line. Defaults to false.
 109
 110diff.<driver>.command::
 111        The custom diff driver command.  See linkgit:gitattributes[5]
 112        for details.
 113
 114diff.<driver>.xfuncname::
 115        The regular expression that the diff driver should use to
 116        recognize the hunk header.  A built-in pattern may also be used.
 117        See linkgit:gitattributes[5] for details.
 118
 119diff.<driver>.binary::
 120        Set this option to true to make the diff driver treat files as
 121        binary.  See linkgit:gitattributes[5] for details.
 122
 123diff.<driver>.textconv::
 124        The command that the diff driver should call to generate the
 125        text-converted version of a file.  The result of the
 126        conversion is used to generate a human-readable diff.  See
 127        linkgit:gitattributes[5] for details.
 128
 129diff.<driver>.wordregex::
 130        The regular expression that the diff driver should use to
 131        split words in a line.  See linkgit:gitattributes[5] for
 132        details.
 133
 134diff.<driver>.cachetextconv::
 135        Set this option to true to make the diff driver cache the text
 136        conversion outputs.  See linkgit:gitattributes[5] for details.
 137
 138diff.tool::
 139        The diff tool to be used by linkgit:git-difftool[1].  This
 140        option overrides `merge.tool`, and has the same valid built-in
 141        values as `merge.tool` minus "tortoisemerge" and plus
 142        "kompare".  Any other value is treated as a custom diff tool,
 143        and there must be a corresponding `difftool.<tool>.cmd`
 144        option.