===================================================================
RCS file: /cvs/mandoc/man.cgi.3,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -p -r1.2 -r1.3
--- mandoc/man.cgi.3	2016/07/07 19:19:01	1.2
+++ mandoc/man.cgi.3	2017/03/15 10:17:29	1.3
@@ -1,4 +1,4 @@
-.\"	$Id: man.cgi.3,v 1.2 2016/07/07 19:19:01 schwarze Exp $
+.\"	$Id: man.cgi.3,v 1.3 2017/03/15 10:17:29 schwarze Exp $
 .\"
 .\" Copyright (c) 2016 Ingo Schwarze <schwarze@openbsd.org>
 .\"
@@ -14,7 +14,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: July 7 2016 $
+.Dd $Mdocdate: March 15 2017 $
 .Dt MAN.CGI 3
 .Os
 .Sh NAME
@@ -126,12 +126,30 @@ contains a search query in short format or when
 is empty and a
 .Ev QUERY_STRING
 is provided.
-It changes into the manpath and calls
+If possible, requests using
+.Ev QUERY_STRING
+are redirected to URIs using
+.Ev PATH_INFO
+by calling
+.Fn pg_redirect .
+Otherwise, it changes into the manpath and calls
 .Xr mansearch 3 .
 Depending on the result, it calls either
 .Fn pg_noresult
 or
 .Fn pg_searchres .
+.It Ft void Fn pg_redirect "const struct req *req" "const char *name"
+This function is special in so far as it does not print an HTML page,
+but only an HTTP 303 response with a Location: of the form:
+.Sm off
+.No http://
+.Ar host Ns /
+.Op Ar scriptname Ns /
+.Op Ar manpath Ns /
+.Op Ar arch Ns /
+.Fa name
+.Op Pf . Ar sec
+.Sm on
 .It Ft void Fn pg_noresult "const struct req *req" "const char *msg"
 This function calls
 .Fn resp_begin_html ,