Add caveat about features supported by :P5

Raku · Jun 4, 2018 · f665d61 · f665d61
1 parent b3b8dd1
commit f665d61
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/doc/Language/5to6-nutshell.pod6 b/doc/Language/5to6-nutshell.pod6
@@ -1033,6 +1033,10 @@ next if $line =~    m/[aeiou]/   ; # Perl 5
 next if $line ~~ m:P5/[aeiou]/   ; # Perl 6, using P5 modifier
 next if $line ~~ m/  <[aeiou]> / ; # Perl 6, native new syntax
 
+Please note that the Perl 5 regular expression syntax dates from many years
+ago and may lack features that have been added since the beginning of the
+Perl 6 project.
+
 =head2 Special matchers generally fall under the <> syntax
 
 There are many cases of special matching syntax that Perl 5 regexes