Author: sorear Date: 2010-05-28 02:10:37 +0200 (Fri, 28 May 2010) New Revision: 30878
Modified: docs/Perl6/Spec/S05-regex.pod Log: [S05] clarify :ratchet behavior with input from pmichaud++ Modified: docs/Perl6/Spec/S05-regex.pod =================================================================== --- docs/Perl6/Spec/S05-regex.pod 2010-05-27 20:14:36 UTC (rev 30877) +++ docs/Perl6/Spec/S05-regex.pod 2010-05-28 00:10:37 UTC (rev 30878) @@ -536,8 +536,9 @@ The new C<:ratchet> modifier causes this regex to not backtrack by default. (Generally you do not use this modifier directly, since it's implied by C<token> and C<rule> declarations.) The effect of this modifier is -to imply a C<:> after every construct that could backtrack, including -bare C<*>, C<+>, and C<?> quantifiers, as well as alternations. +to imply a C<:> after every atom, including but not not limited to +C<*>, C<+>, and C<?> quantifiers, as well as alternations. Explicit +backtracking modifiers on quantified atoms, such as C<**>, will override this. (Note: for portions of patterns subject to longest-token analysis, a C<:> is ignored in any case, since there will be no backtracking necessary.)
