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apeiros/gist:25229

Created November 15, 2008 10:39
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gistfile1.rbx
class String
def reindent(to, tabwidth=nil)
indenter = (tabwidth ? " "*tabwidth : "\t")*to
initial = self[/\A[\t ]*/]
gsub(/^(?:#{initial})?/, indenter)
end
end
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