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Here are some tips for using `.':
(foo|bar)+
and NOT this (foo|bar+)
.
The first pattern matches the words `foo' or `bar' any number of
times, e.g., it matches the text `barfoofoobarfoo'. The
second pattern matches a single instance of foo
or a single instance of
bar
followed by one or more `r's, e.g., it matches the text barrrr
.
(.|\n)
Beware that the regex (.|\n)+
will match your entire input!