[PATCH v3 1/2] Documentation/config.txt: document mailinfo.scissors

[Matthieu Moy <Matthieu.Moy@imag.fr>]

The variable was documented in git-mailinfo.txt, but not in config.txt.
The detailed documentation is still the one of --scissors in
git-mailinfo.txt, but we give enough information here to let the user
understand what it is about, and to make it easy to find it (e.g.
searching ">8" and "8<" finds it).

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
---
Hopefully, I'd have fixed all intances of my typo now :-\.

Sorry for the noise.

 Documentation/config.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/config.txt b/Documentation/config.txt
index ae6791d..15f8695 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1740,6 +1740,13 @@ log.mailmap::
 	If true, makes linkgit:git-log[1], linkgit:git-show[1], and
 	linkgit:git-whatchanged[1] assume `--use-mailmap`.
 
+mailinfo.scissors::
+	If true, makes linkgit:git-mailinfo[1] (and therefore
+	linkgit:git-am[1]) act by default as if the --scissors option
+	was provided on the command-line. When active, this features
+	removes everything from the message body before a scissors
+	line (i.e. consisting mainly of ">8", "8<" and "-").
+
 mailmap.file::
 	The location of an augmenting mailmap file. The default
 	mailmap, located in the root of the repository, is loaded
-- 
2.3.0.157.g79e124b