notmuch: Document the new special-case syntax of "*".

This functionality came through a recent addition to the library.

1 files changed, 3 insertions, 0 deletions

diff --git a/notmuch.1 b/notmuch.1
index 0e6a2ed..96fd242 100644
--- a/notmuch.1
+++ b/notmuch.1
@@ -387,6 +387,9 @@ which will match all messages that contain all of the given
 terms/phrases in the body, the subject, or any of the sender or
 recipient headers.
 
+As a special case, a search string consisting of exactly a single
+asterisk ("*") will match all messages.
+
 In addition to free text, the following prefixes can be used to force
 terms to match against specific portions of an email, (where
 <brackets> indicate user-supplied values):