add the "safe" modifier to skip auto_escape#74

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lessmind wants to merge 3 commits intofeulf:masterfrom

lessmind:master

Commits on May 28, 2013

add "safe" modifier to skip htmlescape
lessmind
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Commits on May 29, 2013

Only check safe modifier when necessary
lessmind
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Commits on Jun 20, 2013

let the statement if does not initialize a value, e.g. {$a = 1} more specific
lessmind
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