isSpace -package:wraxml

Returns True for any Unicode space character, and the control characters \t, \n, \r, \f, \v.

Fast predicate for matching ASCII space characters. Note: This predicate only gives correct answers for the ASCII encoding. For instance, it does not recognise U+00A0 (non-breaking space) as a space character, even though it is a valid ISO-8859-15 byte. For a Unicode-aware and only slightly slower predicate, use isSpace

Fast Word8 predicate for matching ASCII space characters

isSpace w = w == 32 || w - 9 <= 4

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

Selects white-space characters in the Latin-1 range

Selects words corresponding to white-space characters in the Latin-1 range

Fast Word8 predicate for matching ASCII space characters.

Is this white-space? Only works for the Latin1 subset, otherwise returns sFalse.

Test if a character is the SPACE or the TAB character.

Test if a byte is the encoding of the SPACE or the TAB character.

Type class for types which can be safely cast to SpaceDrawer, for instance with toSpaceDrawer.

Determines whether a character is a space, tab, or line separator (newline, carriage return, etc.). Given some UTF-8 text, obtain a character value with utf8GetChar. (Note: don't use this to do word breaking; you have to use Pango or equivalent to get word breaking right, the algorithm is fairly complex.)