Add vc-annotate-switches to manual

* doc/emacs/maintaining.texi (Old Revisions): Add description of
`vc-annotate-switches' and `vc-BACKEND-annotate-switches'.

diff --git a/doc/emacs/maintaining.texi b/doc/emacs/maintaining.texi
index 81a24d0587d4e0aa2a5d16da59eaa358a634ef79..e8eb21c380f9fc49716251b4a59b8fba312f8e26 100644 (file)
--- a/doc/emacs/maintaining.texi
+++ b/doc/emacs/maintaining.texi
@@ -897,7 +897,14 @@ is non-@code{nil}, the colors expressing the age of each line are
 applied to the background color, leaving the foreground at its default
 color.
 
-  When you give a prefix argument to this command, Emacs reads two
+@vindex vc-annotate-switches
+  You can customize the @code{annotate} options that @kbd{C-x v g}
+uses by customizing @code{vc-@var{backend}-annotate-switches} and
+@code{vc-annotate-switches}.  They function similarly to
+@code{vc-@var{backend}-diff-switches} and @code{vc-diff-switches},
+described above.
+
+  When you give a prefix argument to @kbd{C-x v g}, Emacs reads two
 arguments using the minibuffer: the revision to display and annotate
 (instead of the current file contents), and the time span in days the
 color range should cover.