Merge branch 'rt/commit-cleanup-config'

Add a configuration variable to set default clean-up mode other
than "strip".

* rt/commit-cleanup-config:
  commit: make default of "cleanup" option configurable

Documentation/config.txt

@@ -923,6 +923,15 @@ column.tag::
 	Specify whether to output tag listing in `git tag` in columns.
 	See `column.ui` for details.
 
+commit.cleanup::
+	This setting overrides the default of the `--cleanup` option in
+	`git commit`. See linkgit:git-commit[1] for details. Changing the
+	default can be useful when you always want to keep lines that begin
+	with comment character `#` in your log message, in which case you
+	would do `git config commit.cleanup whitespace` (note that you will
+	have to remove the help lines that begin with `#` in the commit log
+	template yourself, if you do this).
+
 commit.status::
 	A boolean to enable/disable inclusion of status information in the
 	commit message template when using an editor to prepare the commit

Documentation/git-commit.txt

@@ -179,7 +179,9 @@ OPTIONS
 	only if the message is to be edited. Otherwise only whitespace
 	removed. The 'verbatim' mode does not change message at all,
 	'whitespace' removes just leading/trailing whitespace lines
-	and 'strip' removes both whitespace and commentary.
+	and 'strip' removes both whitespace and commentary. The default
+	can be changed by the 'commit.cleanup' configuration variable
+	(see linkgit:git-config[1]).
 
 -e::
 --edit::