Implement the roff(7) .rn (rename macro or string) request.

Renaming a user-defined macro is very simple: just copy
the definition to the new name and delete the old name.
Renaming high-level macros is a bit tricky: use a dedicated
key-value-table, with non-standard names as keys and standard
names as values.  When a macro is found that is not user-defined,
look it up in the "renamed" table and translate it back to the
standard name before passing it on to the high-level parsers.

1 files changed, 1 insertions, 0 deletions

diff --git a/roff.h b/roff.h
index 02b610b8..9800dfc9 100644
--- a/roff.h
+++ b/roff.h
@@ -309,6 +309,7 @@ enum	roff_tok {
 	ROFF_writem,
 	ROFF_xflag,
 	ROFF_cblock,
+	ROFF_RENAMED,
 	ROFF_USERDEF,
 	TOKEN_NONE,
 	MDOC_Dd,