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, 15 insertions, 15 deletions

diff --git a/man/man3/mouse.3 b/man/man3/mouse.3
index b5061fd9..6974dfa6 100644
--- a/man/man3/mouse.3
+++ b/man/man3/mouse.3
@@ -49,9 +49,9 @@ They use the message-passing
 .B Channel
 interface in the threads library
 (see
-.IR thread (3));
+.IM thread (3) );
 programs that wish a more event-driven, single-threaded approach should use
-.IR event (3).
+.IM event (3) .
 .PP
 The state of the mouse is recorded in a structure,
 .BR Mouse ,
@@ -107,7 +107,7 @@ are a
 naming the device file connected to the mouse and an
 .I Image
 (see
-.IR draw (3))
+.IM draw (3) )
 on which the mouse will be visible.
 Typically the file is
 nil,
@@ -136,7 +136,7 @@ The actual value sent may be discarded; the receipt of the message
 tells the program that it should call
 .B getwindow
 (see
-.IR graphics (3))
+.IM graphics (3) )
 to reconnect to the window.
 .PP
 .I Readmouse
@@ -152,7 +152,7 @@ or message sent on the channel.
 It calls
 .B flushimage
 (see
-.IR graphics (3))
+.IM graphics (3) )
 before blocking, so any buffered graphics requests are displayed.
 .PP
 .I Closemouse
@@ -174,14 +174,14 @@ is nil, the cursor is set to the default.
 The format of the cursor data is spelled out in
 .B <cursor.h>
 and described in
-.IR graphics (3).
+.IM graphics (3) .
 .PP
 .I Getrect
 returns the dimensions of a rectangle swept by the user, using the mouse,
 in the manner
-.IR rio (1)
+.IM rio (1)
 or
-.IR sam (1)
+.IM sam (1)
 uses to create a new window.
 The
 .I but
@@ -220,7 +220,7 @@ struct Menu
 behaves the same as its namesake
 .I emenuhit
 described in
-.IR event (3),
+.IM event (3) ,
 with two exceptions.
 First, it uses a
 .B Mousectl
@@ -230,7 +230,7 @@ it creates the menu as a true window on the
 .B Screen
 .I scr
 (see
-.IR window (3)),
+.IM window (3) ),
 permitting the menu to be displayed in parallel with other activities on the display.
 If
 .I scr
@@ -244,8 +244,8 @@ restoring the display when the menu is removed.
 .SH SOURCE
 .B \*9/src/libdraw
 .SH SEE ALSO
-.IR graphics (3),
-.IR draw (3),
-.IR event (3),
-.IR keyboard (3),
-.IR thread (3).
+.IM graphics (3) ,
+.IM draw (3) ,
+.IM event (3) ,
+.IM keyboard (3) ,
+.IM thread (3) .