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class String
attr_accessor :_rails_html_safe
alias html_safe? _rails_html_safe
def html_safe!
@_rails_html_safe = true
self
end
def html_safe
dup.html_safe!
end
alias original_plus +
def +(other)
result = original_plus(other)
result._rails_html_safe = html_safe? && other.html_safe?
result
end
alias original_concat <<
alias safe_concat <<
def <<(other)
@_rails_html_safe = false unless other.html_safe?
result = original_concat(other)
end
alias concat <<
end
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