ovsdb-doc: Omit E-R diagram from ASCII version of manpage.

The E-R diagram is illegible when rendered in ASCII, so exclude it from
that version only.  The E-R diagram is still included in other versions of
the manpage (e.g. for PostScript output).

diff --git a/ovsdb/ovsdb-doc.in b/ovsdb/ovsdb-doc.in
index 3c825d2..2577e78 100755 (executable)
--- a/ovsdb/ovsdb-doc.in
+++ b/ovsdb/ovsdb-doc.in
@@ -286,6 +286,7 @@ Table       Purpose
 
     if erFile:
         s += """
+.if !'\*[.T]'ascii' \{
 .sp 1
 .SH "TABLE RELATIONSHIPS"
 .PP
@@ -303,7 +304,7 @@ represent strong references; thin lines represent weak references.
         for line in erStream:
             s += line + '\n'
         erStream.close()
-        s += ".RE\n"
+        s += ".RE\\}\n"
 
     for node in tableNodes:
         s += tableToNroff(schema, node) + "\n"