test-subprocess: fix segfault without arguments

[git.git] / Documentation / diff-config.txt

diff --git a/Documentation/diff-config.txt b/Documentation/diff-config.txt
index 2b1605f5c8f07b96f8e8c27a65717fca6046d613..6aa1be04787b998d12b873afc98d9b498c942363 100644 (file)
--- a/Documentation/diff-config.txt
+++ b/Documentation/diff-config.txt
@@ -8,6 +8,54 @@ diff.autorefreshindex::
        affects only 'git diff' Porcelain, and not lower level
        'diff' commands such as 'git diff-files'.
 
+diff.dirstat::
+       A comma separated list of `--dirstat` parameters specifying the
+       default behavior of the `--dirstat` option to linkgit:git-diff[1]`
+       and friends. The defaults can be overridden on the command line
+       (using `--dirstat=<param1,param2,...>`). The fallback defaults
+       (when not changed by `diff.dirstat`) are `changes,noncumulative,3`.
+       The following parameters are available:
++
+--
+`changes`;;
+       Compute the dirstat numbers by counting the lines that have been
+       removed from the source, or added to the destination. This ignores
+       the amount of pure code movements within a file.  In other words,
+       rearranging lines in a file is not counted as much as other changes.
+       This is the default behavior when no parameter is given.
+`lines`;;
+       Compute the dirstat numbers by doing the regular line-based diff
+       analysis, and summing the removed/added line counts. (For binary
+       files, count 64-byte chunks instead, since binary files have no
+       natural concept of lines). This is a more expensive `--dirstat`
+       behavior than the `changes` behavior, but it does count rearranged
+       lines within a file as much as other changes. The resulting output
+       is consistent with what you get from the other `--*stat` options.
+`files`;;
+       Compute the dirstat numbers by counting the number of files changed.
+       Each changed file counts equally in the dirstat analysis. This is
+       the computationally cheapest `--dirstat` behavior, since it does
+       not have to look at the file contents at all.
+`cumulative`;;
+       Count changes in a child directory for the parent directory as well.
+       Note that when using `cumulative`, the sum of the percentages
+       reported may exceed 100%. The default (non-cumulative) behavior can
+       be specified with the `noncumulative` parameter.
+<limit>;;
+       An integer parameter specifies a cut-off percent (3% by default).
+       Directories contributing less than this percentage of the changes
+       are not shown in the output.
+--
++
+Example: The following will count changed files, while ignoring
+directories with less than 10% of the total amount of changed files,
+and accumulating child directory counts in the parent directories:
+`files,10,cumulative`.
+
+diff.statGraphWidth::
+       Limit the width of the graph part in --stat output. If set, applies
+       to all commands generating --stat outuput except format-patch.
+
 diff.external::
        If this config variable is set, diff generation is not
        performed using the internal diff machinery, but using the