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.

11 files changed, 27 insertions, 27 deletions

diff --git a/man/man9/0intro.9p b/man/man9/0intro.9p
index 397486f8..f432cf51 100644
--- a/man/man9/0intro.9p
+++ b/man/man9/0intro.9p
@@ -21,7 +21,7 @@ such a machine is called, somewhat confusingly, a
 Another possibility for a server is to synthesize
 files on demand, perhaps based on information on data structures
 maintained in memory; the
-.IR plumber (4)
+.IM plumber (4)
 server is an example of such a server.
 .PP
 A
@@ -63,7 +63,7 @@ bytes of data.
 Text strings are represented this way,
 with the text itself stored as a UTF-8
 encoded sequence of Unicode characters (see
-.IR utf (7)).
+.IM utf (7) ).
 Text strings in 9P messages are not
 .SM NUL\c
 -terminated:
@@ -114,7 +114,7 @@ Plan 9 names may contain any printable character (that is, any character
 outside hexadecimal 00-1F and 80-9F)
 except slash.)
 Messages are transported in byte form to allow for machine independence;
-.IR fcall (3)
+.IM fcall (3)
 describes routines that convert to and from this form into a machine-dependent
 C structure.
 .SH MESSAGES
@@ -348,7 +348,7 @@ a ``current file'' on the server.
 Fids are somewhat like file descriptors in a user process,
 but they are not restricted to files open for I/O:
 directories being examined, files being accessed by
-.IR stat (3)
+.IM stat (3)
 calls, and so on \(em all files being manipulated by the operating
 system \(em are identified by fids.
 Fids are chosen by the client.
@@ -461,7 +461,7 @@ to have their input or output attached to fids on 9P servers.
 See
 .IR openfd (9p)
 and
-.IR 9pclient (3)
+.IM 9pclient (3)
 for details.
 .PP
 The
@@ -475,7 +475,7 @@ access permissions (read, write and execute for owner, group and public),
 access and modification times, and
 owner and group identifications
 (see
-.IR stat (3)).
+.IM stat (3) ).
 The owner and group identifications are textual names.
 The
 .B wstat
@@ -523,12 +523,12 @@ into 9P messages.
 .SS Unix
 On Unix, 9P services are posted as Unix domain sockets in a
 well-known directory (see
-.IR getns (3)
+.IM getns (3)
 and
-.IR 9pserve (4)).
+.IM 9pserve (4) ).
 Clients connect to these servers using a 9P client library
 (see
-.IR 9pclient (3)).
+.IM 9pclient (3) ).
 .SH DIRECTORIES
 Directories are created by
 .B create
diff --git a/man/man9/attach.9p b/man/man9/attach.9p
index ddcf7476..3a5104d5 100644
--- a/man/man9/attach.9p
+++ b/man/man9/attach.9p
@@ -122,7 +122,7 @@ and
 and
 .I fsauth
 (see
-.IR 9pclient (3))
+.IM 9pclient (3) )
 generate
 .B attach
 and
@@ -163,6 +163,6 @@ transactions.
 .\" .B mount
 .\" system call on an uninitialized connection.
 .SH SEE ALSO
-.IR 9pclient (3),
+.IM 9pclient (3) ,
 .IR version (9P),
 Plan 9's \fIauthsrv\fR(6)
diff --git a/man/man9/clunk.9p b/man/man9/clunk.9p
index ef3ecdc4..3277c4b0 100644
--- a/man/man9/clunk.9p
+++ b/man/man9/clunk.9p
@@ -41,7 +41,7 @@ generated by
 and
 .I fsunmount
 (see
-.IR 9pclient (3))
+.IM 9pclient (3) )
 and indirectly by other actions such as failed
 .I fsopen
 calls.
diff --git a/man/man9/flush.9p b/man/man9/flush.9p
index 9d3ea267..d0987cac 100644
--- a/man/man9/flush.9p
+++ b/man/man9/flush.9p
@@ -99,11 +99,11 @@ flushing a
 and flushing an invalid tag.
 .SH ENTRY POINTS
 The
-.IR 9pclient (3)
+.IM 9pclient (3)
 library does not generate
 .B flush
 transactions..
-.IR 9pserve (4)
+.IM 9pserve (4)
 generates
 .B flush
 transactions to cancel transactions pending when a client hangs up.
diff --git a/man/man9/open.9p b/man/man9/open.9p
index b8ed973a..1f74eb07 100644
--- a/man/man9/open.9p
+++ b/man/man9/open.9p
@@ -160,7 +160,7 @@ in this case, the
 .I fscreate
 call
 (see
-.IR 9pclient (3))
+.IM 9pclient (3) )
 uses
 .B open
 with truncation.
@@ -209,7 +209,7 @@ again.
 and
 .I fscreate
 (see
-.IR 9pclient (3))
+.IM 9pclient (3) )
 both generate
 .B open
 messages; only
diff --git a/man/man9/openfd.9p b/man/man9/openfd.9p
index 89aa254f..56fb392a 100644
--- a/man/man9/openfd.9p
+++ b/man/man9/openfd.9p
@@ -43,18 +43,18 @@ it cannot be
 .PP
 .I Openfd
 is implemented by
-.IR 9pserve (4).
+.IM 9pserve (4) .
 9P servers that post their services using
-.IR 9pserve (4)
+.IM 9pserve (4)
 (or indirectly via
-.IR post9pservice (3))
+.IM post9pservice (3) )
 will never see a
 .B Topenfd
 message.
 .SH ENTRY POINTS
 .I Fsopenfd
 (see
-.IR 9pclient (3))
+.IM 9pclient (3) )
 generates an
 .B openfd
 message.
diff --git a/man/man9/read.9p b/man/man9/read.9p
index a68f153e..515f85c3 100644
--- a/man/man9/read.9p
+++ b/man/man9/read.9p
@@ -114,7 +114,7 @@ to be transferred atomically.
 and
 .I fswrite
 (see
-.IR 9pclient (3))
+.IM 9pclient (3) )
 generate the corresponding messages.
 Because they take an offset parameter, the
 .I fspread
diff --git a/man/man9/remove.9p b/man/man9/remove.9p
index a9a844a1..79a646a1 100644
--- a/man/man9/remove.9p
+++ b/man/man9/remove.9p
@@ -45,7 +45,7 @@ so other fids typically remain usable.
 .SH ENTRY POINTS
 .I Fsremove
 (see
-.IR 9pclient (3))
+.IM 9pclient (3) )
 generates
 .B remove
 messages.
diff --git a/man/man9/stat.9p b/man/man9/stat.9p
index ab68133d..b92f2d69 100644
--- a/man/man9/stat.9p
+++ b/man/man9/stat.9p
@@ -88,7 +88,7 @@ The
 and
 .I convD2M
 routines (see
-.IR fcall (3))
+.IM fcall (3) )
 convert between directory entries and a C structure called a
 .BR Dir .
 .PP
@@ -263,7 +263,7 @@ messages are generated by
 and
 .IR fsdirstat
 (see
-.IR 9pclient (3)).
+.IM 9pclient (3) ).
 .PP
 .B Wstat
 messages are generated by
diff --git a/man/man9/version.9p b/man/man9/version.9p
index c4961217..99f30239 100644
--- a/man/man9/version.9p
+++ b/man/man9/version.9p
@@ -91,7 +91,7 @@ requests is called a
 .SH ENTRY POINTS
 .I Fsversion
 (see
-.IR 9pclient (3))
+.IM 9pclient (3) )
 generates
 .B version
 messages;
diff --git a/man/man9/walk.9p b/man/man9/walk.9p
index 49777f21..b48b947b 100644
--- a/man/man9/walk.9p
+++ b/man/man9/walk.9p
@@ -149,13 +149,13 @@ may be packed in a single message.
 This constant is called
 .B MAXWELEM
 in
-.IR fcall (3).
+.IM fcall (3) .
 Despite this restriction, the system imposes no limit on the number of elements in a file name,
 only the number that may be transmitted in a single message.
 .SH ENTRY POINTS
 .I Fswalk
 (see
-.IR 9pclient (3))
+.IM 9pclient (3) )
 generates walk messages.
 One or more walk messages may be generated by
 any call that evaluates file names: