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, 7 insertions, 6 deletions

diff --git a/man/man1/snarfer.1 b/man/man1/snarfer.1
index 54200b4b..db8ce198 100644
--- a/man/man1/snarfer.1
+++ b/man/man1/snarfer.1
@@ -13,30 +13,31 @@ Each time a program changes the snarf buffer contents,
 .I snarfer
 copies the new contents and then takes over control
 of the buffer.
-Because the snarf buffer contents are managed by 
+Because the snarf buffer contents are managed by
 .I snarfer
 instead of by individual programs, the contents remain
 available even after the program that wrote them exits.
 .PP
-The 
+The
 .B -v
 option, intended for debugging, causes
 .I snarfer
 to print the new snarf buffer contents each time it changes.
 .PP
-On Mac OS X, 
+On Mac OS X,
 running
 .I snarfer
 keeps the X11 snarf buffer in sync with the Carbon snarf buffer,
 working around a bug in the OS X X11 server.
 See
-.IR getsnarf (3)
+.IM getsnarf (3)
 for more details.
 .SH SOURCE
 .B \*9/src/cmd/snarfer
 .SH SEE ALSO
-Unix's \fIxclipboard\fR(1),
-.IR getsnarf (3)
+Unix's
+.IR xclipboard (1),
+.IM getsnarf (3)
 .SH BUGS
 Both
 .I xclipboard