[PATCH] git-grep: document --and, --or, --not, ( and )

[Matthias Lederhofer <matled@gmx.net>]

Signed-off-by: Matthias Lederhofer <matled@gmx.net>
---
The synopsis looks a bit strange, perhaps someone else has an idea for
this.
---
 Documentation/git-grep.txt |   11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/Documentation/git-grep.txt b/Documentation/git-grep.txt
index 62a8e7f..544ad24 100644
--- a/Documentation/git-grep.txt
+++ b/Documentation/git-grep.txt
@@ -16,7 +16,7 @@ SYNOPSIS
 	   [-n] [-l | --files-with-matches] [-L | --files-without-match]
 	   [-c | --count]
 	   [-A <post-context>] [-B <pre-context>] [-C <context>]
-	   [-f <file>] [-e] <pattern>
+	   [-f <file>] [-e] <pattern> [--and|--or|--not|(|)|-e <pattern>...]
 	   [<tree>...]
 	   [--] [<path>...]
 
@@ -74,7 +74,14 @@ OPTIONS
 -e::
 	The next parameter is the pattern. This option has to be
 	used for patterns starting with - and should be used in
-	scripts passing user input to grep.
+	scripts passing user input to grep.  Multiple patterns are
+	combined by 'or'.
+
+--and | --or | --not | ( | )::
+	Specify how multiple patterns are combined using boolean
+	expressions.  `--or` is the default operator.  `--and` has
+	higher precedence than `--or`.  `-e` has to be used for all
+	patterns.
 
 `<tree>...`::
 	Search blobs in the trees for specified patterns.
-- 
1.4.2.rc2.g4713