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A checkFunction to be called from check
that identifies prefixed and suffixed whitespace(s) in character,
(haven_)labelled or factor variables.
identifyWhitespace(v, nMax = 10)A character, (haven_)labelled or factor variable to check.
The maximum number of problematic values to report.
Default is 10. Set to Inf if all problematic values are to be included
in the outputted message, or to 0 for no output.
A checkResult with three entires:
$problem (a logical indicating whether any whitespaces were
fount), $message (a message describing which values were prefixed
or suffixed with whitespace) and $problemValues (the problematic
values). Note that only unique values are printed in the message, and that
they are sorted alphabetically.
# NOT RUN {
identifyWhitespace(c("a", " b", "c", "d ", "e "))
# }
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