File psl-1983/help/strings.hlp artifact c2d29f9f32 part of check-in 2f3b3fd537


A Common Lisp compatible package of string and character functions in
PSL is available by LOADing STRINGS.  The following functions are
defined, from Chapters 13 and 14 of the Common Lisp manual.  CHAR and
STRING are not defined because of other functions with the same name.

;;;; STANDARD-CHARP - non-control character
;;;; GRAPHICP - printable character
;;;; STRING-CHARP - a character that can be an element of a string
;;;; ALPHAP - an alphabetic character
;;;; UPPERCASEP - an uppercase letter
;;;; LOWERCASEP - a lowercase letter
;;;; BOTHCASEP - same as ALPHAP
;;;; DIGITP - a digit character (optional radix not supported)
;;;; ALPHANUMERICP - a digit or an alphabetic
;;;; CHAR= - strict character comparison
;;;; CHAR-EQUAL - similar character objects
;;;; CHAR< - strict character comparison
;;;; CHAR> - strict character comparison
;;;; CHAR-LESSP - ignore case and bits for CHAR<
;;;; CHAR-GREATERP - ignore case and bits for CHAR>
;;;; CHAR-CODE - character to integer conversion
;;;; CHAR-BITS - bits attribute of a character
;;;; CHAR-FONT - font attribute of a character
;;;; CODE-CHAR - integer to character conversion, optional bits, font ignored
;;;; CHARACTER - character plus bits and font, which are ignored
;;;; CHAR-UPCASE - raise a character
;;;; CHAR-DOWNCASE - lower a character
;;;; DIGIT-CHAR - convert character to digit (optional radix, bits, font NYI)
;;;; CHAR-INT - convert character to integer
;;;; INT-CHAR - convert integer to character
;;;; CHAR - fetch a character in a string
;;;; RPLACHAR - store a character in a string
;;;; STRING= - compare two strings (substring options not implemented)
;;;; STRING-EQUAL - compare two strings, ignoring case, bits and font
;;;; STRING< - lexicographic comparison of strings
;;;; STRING> - lexicographic comparison of strings
;;;; STRING<= - lexicographic comparison of strings
;;;; STRING>= - lexicographic comparison of strings
;;;; STRING<> - lexicographic comparison of strings
;;;; STRING-LESSP - lexicographic comparison of strings
;;;; STRING-GREATERP - lexicographic comparison of strings
;;;; STRING-NOT-GREATERP - lexicographic comparison of strings
;;;; STRING-NOT-LESSP - lexicographic comparison of strings
;;;; STRING-NOT-EQUAL - lexicographic comparison of strings
;;;; MAKE-STRING - construct a string
;;;; STRING-TRIM - remove leading and trailing characters from a string
;;;; STRING-LEFT-TRIM - remove leading characters from string
;;;; STRING-RIGHT-TRIM - remove trailing characters from string
;;;; STRING-UPCASE - copy and raise all alphabetic characters in string
;;;; NSTRING-UPCASE - destructively raise all alphabetic characters in string
;;;; STRING-DOWNCASE - copy and lower all alphabetic characters in string
;;;; NSTRING-DOWNCASE - destructively raise all alphabetic characters in string
;;;; STRING-CAPITALIZE - copy and raise first letter of all words in string
;;;; NSTRING-CAPITALIZE - destructively raise first letter of all words
;;;; STRING - coercion to a string
;;;; STRING-TO-LIST - unpack string characters into a list
;;;; STRING-TO-VECTOR - unpack string characters into a vector
;;;; SUBSTRING - subsequence restricted to strings
;;;; STRING-LENGTH - last index of a string, plus one



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