doc: Don't use @table @qcode to avoid problems with Texinfo 5.2. * plot.txi: Replace "@table @qcode" with "@table @asis". Use "@item @qcode{xx}" for each table item. * file-io.cc (Ffread): Replace "@table @qcode" with "@table @asis". Use "@item @qcode{xx}" for each table item. * validateattributes.m: Replace "@table @qcode" with "@table @asis". Use "@item @qcode{xx}" for each table item.

--- a/doc/interpreter/plot.txi
+++ b/doc/interpreter/plot.txi
@@ -2631,17 +2631,17 @@
 @item linestyle
 May be one of
 
-@table @code
-@item "-"
+@table @asis
+@item @qcode{"-"}
 Solid line.  [default]
 
-@item "--"
+@item @qcode{"--"}
 Dashed line.
 
-@item ":"
+@item @qcode{":"}
 Dotted line.
 
-@item "-."
+@item @qcode{"-."}
 A dash-dot line.
 
 @item @qcode{"none"}