[PATCH v4 2/3] log: document --no-use-mailmap option

[Ariadne Conill <ariadne@dereferenced.org>]

When mailmap is enabled by default or by configuration, it may be
useful to override the default behaviour.  Previously, it was
possible to enable the mailmap feature when it was disabled by
default or in the configuration, but it was not possible to disable
the mailmap feature when it was enabled by default or by the
configuration.

The previously undocumented --no-use-mailmap option equalizes this
by allowing the user to explicitly enable or disable the mailmap
feature according to their requirements.

Signed-off-by: Ariadne Conill <ariadne@dereferenced.org>
---
 Documentation/config/log.txt | 4 ++--
 Documentation/git-log.txt    | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/Documentation/config/log.txt b/Documentation/config/log.txt
index 78d9e4453a..8a01eed46b 100644
--- a/Documentation/config/log.txt
+++ b/Documentation/config/log.txt
@@ -39,5 +39,5 @@ log.showSignature::
 	linkgit:git-whatchanged[1] assume `--show-signature`.
 
 log.mailmap::
-	If true, makes linkgit:git-log[1], linkgit:git-show[1], and
-	linkgit:git-whatchanged[1] assume `--use-mailmap`.
+	If false, makes linkgit:git-log[1], linkgit:git-show[1], and
+	linkgit:git-whatchanged[1] assume `--no-use-mailmap`.
diff --git a/Documentation/git-log.txt b/Documentation/git-log.txt
index b02e922dc3..b406bc4c48 100644
--- a/Documentation/git-log.txt
+++ b/Documentation/git-log.txt
@@ -49,7 +49,7 @@ OPTIONS
 	Print out the ref name given on the command line by which each
 	commit was reached.
 
---use-mailmap::
+--[no-]use-mailmap::
 	Use mailmap file to map author and committer names and email
 	addresses to canonical real names and email addresses. See
 	linkgit:git-shortlog[1].
-- 
2.17.1