config: document blame configuration

The options are currently only referenced by the git-blame man page,
also explain them in git-config, which is the canonical page to
contain all config options.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 2271809..2102f07 100644 (file)
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -943,6 +943,23 @@ apply.whitespace::
        Tells 'git apply' how to handle whitespaces, in the same way
        as the `--whitespace` option. See linkgit:git-apply[1].
 
+blame.showRoot::
+       Do not treat root commits as boundaries in linkgit:git-blame[1].
+       This option defaults to false.
+
+blame.blankBoundary::
+       Show blank commit object name for boundary commits in
+       linkgit:git-blame[1]. This option defaults to false.
+
+blame.showEmail::
+       Show the author email instead of author name in linkgit:git-blame[1].
+       This option defaults to false.
+
+blame.date::
+       Specifies the format used to output dates in linkgit:git-blame[1].
+       If unset the iso format is used. For supported values,
+       see the discussion of the `--date` option at linkgit:git-log[1].
+
 branch.autoSetupMerge::
        Tells 'git branch' and 'git checkout' to set up new branches
        so that linkgit:git-pull[1] will appropriately merge from the