emacs: allow to set RETAIN-STATE for `notmuch-show-refresh-view' interactively

The notmuch-show view refresh function (`notmuch-show-refresh-view',
bound to "=") accepts an optional RETAIN-STATE argument.  The patch
allows to set this argument interactively by using "C-u =".

diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index 43408d987e90ea1d40712ff4b9653066ce0c18c0..aa9cceedd0e5c9dbcb96e1505d54f23cf80e409e 100644 (file)
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -1124,7 +1124,7 @@ This includes:
 Refreshes the current view, observing changes in display
 preferences. If RETAIN-STATE is non-nil then the state of the
 buffer is stored and re-applied after the refresh."
-  (interactive)
+  (interactive "P")
   (let ((inhibit-read-only t)
        state)
     (if retain-state