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char-fat-p· 80
char-fat-p char Function
Returns t if char is a fat character, otherwise nil. char must be a character
object. A character that contains non-zero bits or style information is
called a fat character. See the section "Type Specifiers and Type Hierarchy
for Characters" in Symbolics Common Lisp: Language Concepts.
(char-fat-p #\A) => NIL
(char-fat-p #\c-A) => T
(char-fat-p (make-character #\A :style '(nil :bold nil») => T
I
char-flip case char Function
If char is a lowercase alphabetic character in the standard character set,
char-flip case returns its uppercase form. If char is an uppercase alphabetic
character in the standard character set, char-flip case returns its
lowercase form. Otherwise, it returns char. If character style information
is present it is preserved.
(char-flipcase #\X) => #\x
(char-flipcase #\b) => #\1J
char-font char Function
The contract of char-font is to return the font field of the character object
specified by char. Genera characters do not have a font field so char-font
always returns zero for character objects.
Genera does not support the Common Lisp concept of fonts, but supports
the character style system instead. See the section "Character Styles" in
Symbolics Common Lisp: Language Concepts. To find out the character
style of a character, use si:char-style: See the function si:char-style, page
83.
The only reason to use char-font would be when writing a program intended
to be portable to other Common Lisp systems.
char-font-limit
Constant
The value of char-font-limit is the upper exclusive limit for the value of
values of the font bit. Genera characters do not have a font field so the
value of char-font-limit is 1. Genera does not support the Common Lisp
concept of fonts, but supports the y character style system instead. See the
section "Character Styles" in Symbolics Common Lisp: Language Concepts.
char-greaterp char &rest chars Function
This primitive compares characters for order; many of the string functions
call it. char and chars must be characters; they cannot be integers. The
result is t if char comes after chars ignoring case and style, otherwise nil.
See the section "The Character Set" in Reference Guide to Streams, Files,
and 110. Details of the ordering of characters are in that section.