From: SpringFlowers AutumnMoon <summercoolness@...>
Date: 2007-09-22T19:02:40+09:00
Subject: %w| a b c|   %w_a b c_   %w<a b c> all work

%w|a b c|

%w_a b c_

%w<a b c>

all work
is there an official doc or book that says so?

seems like the first character that after "%w" can be used as a
delimiter.
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