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, 4 insertions, 4 deletions

diff --git a/man/man1/soelim.1 b/man/man1/soelim.1
index 6378d414..6b8f4652 100755
--- a/man/man1/soelim.1
+++ b/man/man1/soelim.1
@@ -11,19 +11,19 @@ soelim \- preprocess so inclusion commands in troff input
 .I Soelim
 reads the specified files or the standard input and performs
 the textual inclusion implied by
-.IR troff (1)
+.IM troff (1)
 directives of the form
 .TP
 .B "\&.so some_file
 .PP
 when they appear at the beginning of input lines.  This is useful when
 using programs such as
-.IR tbl (1)
+.IM tbl (1)
 that do not normally do this, allowing
 placement of individual tables or other text objects in separate files
 to be run as a part of a large document.
 .SH SOURCE
 .B \*9/bin/soelim
 .SH "SEE ALSO"
-.IR deroff (1),
-.IR troff (1)
+.IM deroff (1) ,
+.IM troff (1)