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cop.h: Add comment
authorKarl Williamson <khw@cpan.org>
Mon, 9 Mar 2020 23:29:22 +0000 (17:29 -0600)
committerKarl Williamson <khw@cpan.org>
Wed, 11 Mar 2020 15:00:04 +0000 (09:00 -0600)
cop.h

diff --git a/cop.h b/cop.h
index 8a91620..75654b8 100644 (file)
--- a/cop.h
+++ b/cop.h
@@ -1016,6 +1016,8 @@ L<perlcall>.
 
 /* Support for switching (stack and block) contexts.
  * This ensures magic doesn't invalidate local stack and cx pointers.
+ * Which one to use (or add) is mostly, but not completely arbitrary:  See
+ * http://nntp.perl.org/group/perl.perl5.porters/257169
  */
 
 #define PERLSI_UNKNOWN         -1