update copyrights for 2018

[public-inbox.git] / lib / PublicInbox / WwwText.pm

diff --git a/lib/PublicInbox/WwwText.pm b/lib/PublicInbox/WwwText.pm
index b8beb97c6d5983e9c319a2f7733a4e232fc7f884..e6d00ea9f00c48e27052f657a812a0e5bc3d3049 100644 (file)
--- a/lib/PublicInbox/WwwText.pm
+++ b/lib/PublicInbox/WwwText.pm
@@ -1,7 +1,6 @@
-# Copyright (C) 2016 all contributors <meta@public-inbox.org>
+# Copyright (C) 2016-2018 all contributors <meta@public-inbox.org>
 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
-#
-# serves the /$INBOX/_/* endpoints from :text/* of the git tree
+
 package PublicInbox::WwwText;
 use strict;
 use warnings;
@@ -134,7 +133,7 @@ search
     in other search engines.
 
     We also support search prefixes to limit the scope of the
-    search to certain fields using prefixes.
+    search to certain fields.
 
     Prefixes supported in this installation include:
 
@@ -142,6 +141,10 @@ EOF
                _srch_prefix($srch, $txt);
 
                $$txt .= <<EOF;
+
+    Most prefixes are probabilistic, meaning they support stemming
+    and wildcards ('*').  Ranges (such as 'd:') and boolean prefixes
+    do not support stemming or wildcards.
     The upstream Xapian query parser documentation fully explains
     the query syntax:
 
@@ -178,6 +181,10 @@ message threading
        $WIKI_URL/Atom_(standard)
        https://tools.ietf.org/html/rfc4287
 
+      Atom Threading Extensions (RFC4685) is supported:
+
+       https://tools.ietf.org/html/rfc4685
+
     Finally, the gzipped mbox for a thread is available for
     downloading and importing into your favorite mail client: