tmac: introduce real manual reference macro instead of overloading IR

The overloading of IR emits magic \X'...' sequences that turn into HTML manual links.
But not all such IR invocations should be manual links;
those had to be written to avoid the IR macro before.
Worse, the \X'...' ending the IR causes troff to emit only a single space after a period.

Defining a new IM macro for manual references fixes both problems.

Fixes #441.

1 files changed, 11 insertions, 11 deletions

diff --git a/man/man3/venti-conn.3 b/man/man3/venti-conn.3
index ea597de3..0c1b95d5 100644
--- a/man/man3/venti-conn.3
+++ b/man/man3/venti-conn.3
@@ -90,21 +90,21 @@ for reading and writing.
 .I Vtdial
 dials the given network address
 (see
-.IR dial (3))
+.IM dial (3) )
 and returns a corresponding connection.
 It returns nil if the connection cannot be established.
 .PP
 .I Vtversion
 exchanges version information with the remote side
 as described in
-.IR venti (7).
+.IM venti (7) .
 The negotiated version is stored in
 .IB z ->version \fR.
 .PP
 .I Vtsend
 writes a packet
 (see
-.IR venti-packet (3))
+.IM venti-packet (3) )
 on the connection
 .IR z .
 The packet
@@ -115,7 +115,7 @@ be returned by
 .I vtsend
 will add the two-byte length field
 (see
-.IR venti (7))
+.IM venti (7) )
 at the begnning.
 .I Vtsend
 frees
@@ -137,7 +137,7 @@ and
 block until the packet can be written or read from the network.
 In a threaded program
 (see
-.IR thread (3)),
+.IM thread (3) ),
 this may not be desirable.
 If the caller arranges for
 .IR vtsendproc
@@ -192,12 +192,12 @@ as they are sent or received.
 .SH SOURCE
 .B \*9/src/libventi
 .SH SEE ALSO
-.IR venti (1),
-.IR venti (3),
-.IR venti-client (3),
-.IR venti-packet (3),
-.IR venti-server (3),
-.IR venti (7)
+.IM venti (1) ,
+.IM venti (3) ,
+.IM venti-client (3) ,
+.IM venti-packet (3) ,
+.IM venti-server (3) ,
+.IM venti (7)
 .SH DIAGNOSTICS
 Routines that return pointers return nil on error.
 Routines returning integers return 0 on success, \-1 on error.