Add a warning notice on top of the generated grammar.txt.
diff --git a/Doc/perl/python.perl b/Doc/perl/python.perl
index ab93c7c..cf0301e 100644
--- a/Doc/perl/python.perl
+++ b/Doc/perl/python.perl
@@ -883,6 +883,12 @@
$filename = 'grammar.txt';
}
open(GRAMMAR, ">$filename") || die "\n$!\n";
+ print GRAMMAR "##################################################\n";
+ print GRAMMAR "# This file is only meant to be a guide, #\n";
+ print GRAMMAR "# and differs in small ways from the real #\n";
+ print GRAMMAR "# grammar. The exact reference is the file #\n";
+ print GRAMMAR "# Grammar/Grammar distributed with the source. #\n";
+ print GRAMMAR "##################################################\n";
print GRAMMAR strip_grammar_markup($DefinedGrammars{$lang});
close(GRAMMAR);
print "Wrote grammar file $filename\n";