[PATCH] blame: document --color-* options

[Bagas Sanjaya <bagasdotme@gmail.com>]

Commit cdc2d5f11f1a (builtin/blame: dim uninteresting metadata lines,
2018-04-23) and 25d5f52901f0 (builtin/blame: highlight recently changed
lines, 2018-04-23) introduce --color-lines and --color-by-age options to
git blame, respectively. While both options are mentioned in usage help,
they aren't documented in git-blame(1). Document them.

Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
---
 Documentation/blame-options.txt | 8 ++++++++
 Documentation/git-blame.txt     | 4 ++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/Documentation/blame-options.txt b/Documentation/blame-options.txt
index 117f4cf806..b15999a3c8 100644
--- a/Documentation/blame-options.txt
+++ b/Documentation/blame-options.txt
@@ -136,5 +136,13 @@ take effect.
 	option.  An empty file name, `""`, will clear the list of revs from
 	previously processed files.
 
+--color-lines::
+	Color lines that contain repeated metadata. The color used is set with
+	`color.blame.repeatedLines` config option.
+
+--color-by-age::
+	Color metadata depending on age of the line. `color.blame.highlightRecent`
+	config option controls what color is used for each range of age.
+
 -h::
 	Show help message.
diff --git a/Documentation/git-blame.txt b/Documentation/git-blame.txt
index 3bf5d5d8b4..cfdbad030b 100644
--- a/Documentation/git-blame.txt
+++ b/Documentation/git-blame.txt
@@ -11,8 +11,8 @@ SYNOPSIS
 'git blame' [-c] [-b] [-l] [--root] [-t] [-f] [-n] [-s] [-e] [-p] [-w] [--incremental]
 	    [-L <range>] [-S <revs-file>] [-M] [-C] [-C] [-C] [--since=<date>]
 	    [--ignore-rev <rev>] [--ignore-revs-file <file>]
-	    [--progress] [--abbrev=<n>] [<rev> | --contents <file> | --reverse <rev>..<rev>]
-	    [--] <file>
+	    [--color-lines] [--color-by-age] [--progress] [--abbrev=<n>]
+	    [<rev> | --contents <file> | --reverse <rev>..<rev>] [--] <file>
 
 DESCRIPTION
 -----------

base-commit: 99c99ed8259bf070cd8ae7b51a94904b7cf5c161
-- 
2.25.1