Add stub for eqn.7 manual and flip it on. Also note COMPATIBILITY issue

of how we considered .TS (etc.) macros and how the preprocessors do.

1 files changed, 23 insertions, 0 deletions

diff --git a/roff.7 b/roff.7
index 0cea7f84..7e893ba9 100644
--- a/roff.7
+++ b/roff.7
@@ -344,6 +344,15 @@ then false is assumed.
 The syntax of this request is similar to
 .Sx \&if
 except that the conditional is missing.
+.Ss \&EN
+End an equation block.
+See
+.Sx \&EQ .
+.Ss \&EQ
+Begin an equation block.
+See
+.Xr eqn 7
+for a description of the equation language.
 .Ss \&hy
 Set automatic hyphenation mode.
 This line-scoped request is currently ignored.
@@ -599,6 +608,19 @@ refers to groff version 1.15.
 .Pp
 .Bl -dash -compact
 .It
+In mandoc, the
+.Sx \&EQ ,
+.Sx \&TE ,
+.Sx \&TS ,
+and
+.Sx \&T& ,
+macros are considered regular macros.
+In all other
+.Nm
+implementations, these are special macros that must be specified without
+spacing between the control character (which must be a period) and the
+macro name.
+.It
 The
 .Cm nS
 register is only compatible with OpenBSD's groff-1.15.
@@ -616,6 +638,7 @@ using the next-line syntax.
 .El
 .Sh SEE ALSO
 .Xr mandoc 1 ,
+.Xr eqn 7 ,
 .Xr man 7 ,
 .Xr mandoc_char 7 ,
 .Xr mdoc 7 ,