rails/rails — pull request #11317 by ma2gedev (2013-07-05 16:20:54+00:00)
Title: Added an `enforce_utf8` hash option for `form_tag` method

Control to output a hidden input tag with name `utf8` without monkey
patching

Before:

form_tag
# => '

....

'

After:

form_tag
# => '

....

'

form_tag({}, { :enforce_utf8 => false })
# => '

....

'