diff --stat: enable limiting of the graph part

A new option --stat-graph-width=<width> can be used to limit the width
of the graph part even is more space is available. Up to <width>
columns will be used for the graph.

If commits changing a lot of lines are displayed in a wide terminal
window (200 or more columns), and the +- graph uses the full width,
the output can be hard to comfortably scan with a horizontal movement
of human eyes. Messages wrapped to about 80 columns would be
interspersed with very long +- lines. It makes sense to limit the
width of the graph part to a fixed value (e.g. 70 columns), even if
more columns are available.

Signed-off-by: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index 6b9408fdd..d34efd521 100644
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -59,6 +59,8 @@ endif::git-format-patch[]
 	or 80 columns if not connected to a terminal, and can be
 	overriden by `<width>`. The width of the filename part can be
 	limited by giving another width `<name-width>` after a comma.
+	The width of the graph part can be limited by using
+	`--stat-graph-width=<width>`.
 	By giving a third parameter `<count>`, you can limit the
 	output to the first `<count>` lines, followed by `...` if
 	there are more.