new message_for_blank_answer setting #496
Merged
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I was asked to trigger a answer feedback message on blank input boxes is some cases (ex. where
DNE
is needed, but a student may leave the box blank). I could not get that to work usingAnswerHints
as theblank_postfilter
runs beforeAnswerHints
.A workaround was to remove all post filters and the install a modified version of the
blank_postfilter
which sets a message.I am proposing adding a new setting
message_for_blank_answer
which can be used to provide a specific message for a blank (empty or all white-space) input box, which is a much simpler approach and easily reused.After this PR the
cmp()
call can includemessage_for_blank_answer => "Do not leave this box empty"
to set one possible message.