Selects Unicode space characters (general category
Space),
and the control characters
\t,
\n,
\r,
\f,
\v.
Note: isSpace is
not equivalent to
isWhiteSpace.
isWhiteSpace selects the same characters
from
isSpace plus the following:
- U+0085 NEXT LINE (NEL)
- U+2028 LINE SEPARATOR
- U+2029 PARAGRAPH SEPARATOR
isSpace c == Data.Char.isSpace c