(guile.info.gz) SRFI-14 Standard Character Sets

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(guile.info.gz) SRFI-14 Character-Set Algebra

(guile.info.gz) SRFI-14

 
 39.12.8 Standard Character Sets
 -------------------------------
 
 In order to make the use of the character set data type and procedures
 useful, several predefined character set variables exist.
 
  -- Variable: char-set:lower-case
      All lower-case characters.
 
  -- Variable: char-set:upper-case
      All upper-case characters.
 
  -- Variable: char-set:title-case
      This is empty, because ASCII has no titlecase characters.
 
  -- Variable: char-set:letter
      All letters, e.g. the union of `char-set:lower-case' and
      `char-set:upper-case'.
 
  -- Variable: char-set:digit
      All digits.
 
  -- Variable: char-set:letter+digit
      The union of `char-set:letter' and `char-set:digit'.
 
  -- Variable: char-set:graphic
      All characters which would put ink on the paper.
 
  -- Variable: char-set:printing
      The union of `char-set:graphic' and `char-set:whitespace'.
 
  -- Variable: char-set:whitespace
      All whitespace characters.
 
  -- Variable: char-set:blank
      All horizontal whitespace characters, that is `#\space' and
      `#\tab'.
 
  -- Variable: char-set:iso-control
      The ISO control characters with the codes 0-31 and 127.
 
  -- Variable: char-set:punctuation
      The characters `!"#%&'()*,-./:;?@[\\]_{}'
 
  -- Variable: char-set:symbol
      The characters `$+<=>^`|~'.
 
  -- Variable: char-set:hex-digit
      The hexadecimal digits `0123456789abcdefABCDEF'.
 
  -- Variable: char-set:ascii
      All ASCII characters.
 
  -- Variable: char-set:empty
      The empty character set.
 
  -- Variable: char-set:full
      This character set contains all possible characters.
 

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(guile.info.gz) SRFI-14 Character-Set Algebra

(guile.info.gz) SRFI-14