Merge branch 'kh/doc-commit-extra-references'

Doc update.

* kh/doc-commit-extra-references:
  doc: commit: link to git-status(1) on all format options

Author: gitster

Documentation/git-commit.adoc

@@ -146,20 +146,22 @@ See linkgit:git-rebase[1] for details.
 	linkgit:git-status[1] for details. Implies `--dry-run`.
 
 `--branch`::
-	Show the branch and tracking info even in short-format.
+	Show the branch and tracking info even in short-format. See
+	linkgit:git-status[1] for details.
 
 `--porcelain`::
 	When doing a dry-run, give the output in a porcelain-ready
 	format. See linkgit:git-status[1] for details. Implies
 	`--dry-run`.
 
 `--long`::
-	When doing a dry-run, give the output in the long-format.
-	Implies `--dry-run`.
+	When doing a dry-run, give the output in the long-format. This
+	is the default output of linkgit:git-status[1]. Implies
+	`--dry-run`.
 
 `-z`::
 `--null`::
-	When showing `short` or `porcelain` status output, print the
+	When showing `short` or `porcelain` linkgit:git-status[1] output, print the
 	filename verbatim and terminate the entries with _NUL_, instead of _LF_.
 	If no format is given, implies the `--porcelain` output format.
 	Without the `-z` option, filenames with "unusual" characters are