32 lines
5.2 KiB
HTML
32 lines
5.2 KiB
HTML
<!-- Common Lisp HyperSpec (TM), version 7.0 generated by Kent M. Pitman on Mon, 11-Apr-2005 2:31am EDT -->
|
|
<HTML>
|
|
<HEAD>
|
|
<TITLE>CLHS: Section 13.1.3</TITLE>
|
|
<LINK HREF="../Data/clhs.css" REL="stylesheet" TYPE="text/css" />
|
|
<META HTTP-EQUIV="Author" CONTENT="Kent M. Pitman">
|
|
<META HTTP-EQUIV="Organization" CONTENT="LispWorks Ltd.">
|
|
<LINK REL=TOP HREF="../Front/index.htm">
|
|
<LINK REL=COPYRIGHT HREF="../Front/Help.htm#Legal">
|
|
<LINK REL=DISCLAIMER HREF="../Front/Help.htm#Disclaimer">
|
|
<LINK REL=PREV HREF="13_abb.htm">
|
|
<LINK REL=UP HREF="13_a.htm">
|
|
<LINK REL=NEXT HREF="13_ad.htm">
|
|
</HEAD>
|
|
<BODY>
|
|
<H1><A REV=MADE HREF="http://www.lispworks.com/"><IMG WIDTH=80 HEIGHT=65 ALT="[LISPWORKS]" SRC="../Graphics/LWSmall.gif" ALIGN=Bottom></A><A REL=TOP HREF="../Front/index.htm"><IMG WIDTH=237 HEIGHT=65 ALT="[Common Lisp HyperSpec (TM)]" SRC="../Graphics/CLHS_Sm.gif" ALIGN=Bottom></A> <A REL=PREV HREF="13_abb.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Previous]" SRC="../Graphics/Prev.gif" ALIGN=Bottom></A><A REL=UP HREF="13_a.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Up]" SRC="../Graphics/Up.gif" ALIGN=Bottom></A><A REL=NEXT HREF="13_ad.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Next]" SRC="../Graphics/Next.gif" ALIGN=Bottom></A></H1>
|
|
|
|
<HR>
|
|
|
|
<H2>
|
|
13.1.3 Character Attributes</H2> <P>
|
|
<A REL=DEFINITION HREF="26_glo_c.htm#character"><I>Characters</I></A> have only one <A REL=DEFINITION HREF="26_glo_s.htm#standardized"><I>standardized</I></A> <A REL=DEFINITION HREF="26_glo_a.htm#attribute"><I>attribute</I></A>: a <A REL=DEFINITION HREF="26_glo_c.htm#code"><I>code</I></A>. A <A REL=DEFINITION HREF="26_glo_c.htm#character"><I>character</I></A>'s <A REL=DEFINITION HREF="26_glo_c.htm#code"><I>code</I></A> is a non-negative <A REL=DEFINITION HREF="26_glo_i.htm#integer"><I>integer</I></A>. This <A REL=DEFINITION HREF="26_glo_c.htm#code"><I>code</I></A> is composed from a character <A REL=DEFINITION HREF="26_glo_s.htm#script"><I>script</I></A> and a character label in an <A REL=DEFINITION HREF="26_glo_i.htm#implementation-dependent"><I>implementation-dependent</I></A> way. See the <A REL=DEFINITION HREF="26_glo_f.htm#function"><I>functions</I></A> <A REL=DEFINITION HREF="f_char_c.htm#char-code"><B>char-code</B></A> and <A REL=DEFINITION HREF="f_code_c.htm#code-char"><B>code-char</B></A>. <P>
|
|
<P>
|
|
Additional, <A REL=DEFINITION HREF="26_glo_i.htm#implementation-defined"><I>implementation-defined</I></A> <A REL=DEFINITION HREF="26_glo_a.htm#attribute"><I>attributes</I></A> of <A REL=DEFINITION HREF="26_glo_c.htm#character"><I>characters</I></A> are also permitted so that, for example, two <A REL=DEFINITION HREF="26_glo_c.htm#character"><I>characters</I></A> with the same <A REL=DEFINITION HREF="26_glo_c.htm#code"><I>code</I></A> may differ in some other, <A REL=DEFINITION HREF="26_glo_i.htm#implementation-defined"><I>implementation-defined</I></A> way. <P>
|
|
For any <A REL=DEFINITION HREF="26_glo_i.htm#implementation-defined"><I>implementation-defined</I></A> <A REL=DEFINITION HREF="26_glo_a.htm#attribute"><I>attribute</I></A> there is a distinguished value called the <A REL=DEFINITION HREF="26_glo_n.htm#null"><I>null</I></A> value for that <A REL=DEFINITION HREF="26_glo_a.htm#attribute"><I>attribute</I></A>. A <A REL=DEFINITION HREF="26_glo_c.htm#character"><I>character</I></A> for which each <A REL=DEFINITION HREF="26_glo_i.htm#implementation-defined"><I>implementation-defined</I></A> <A REL=DEFINITION HREF="26_glo_a.htm#attribute"><I>attribute</I></A> has the null value for that <A REL=DEFINITION HREF="26_glo_a.htm#attribute"><I>attribute</I></A> is called a <A REL=DEFINITION HREF="26_glo_s.htm#simple"><I>simple</I></A> <A REL=DEFINITION HREF="26_glo_c.htm#character"><I>character</I></A>. If the <A REL=DEFINITION HREF="26_glo_i.htm#implementation"><I>implementation</I></A> has no <A REL=DEFINITION HREF="26_glo_i.htm#implementation-defined"><I>implementation-defined</I></A> <A REL=DEFINITION HREF="26_glo_a.htm#attribute"><I>attributes</I></A>, then all <A REL=DEFINITION HREF="26_glo_c.htm#character"><I>characters</I></A> are <A REL=DEFINITION HREF="26_glo_s.htm#simple"><I>simple</I></A> <A REL=DEFINITION HREF="26_glo_c.htm#character"><I>characters</I></A>. <P>
|
|
<P><HR>The following <A REL=META HREF="../Front/X3J13Iss.htm">X3J13 cleanup issue</A>, <I>not part of the specification</I>, applies to this section:<P><UL><LI> <A REL=CHILD HREF="../Issues/iss027.htm">CHARACTER-PROPOSAL:2-1-1</A><P></UL><HR>
|
|
|
|
<A REL=NAVIGATOR HREF="../Front/StartPts.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Starting Points]" SRC="../Graphics/StartPts.gif" ALIGN=Bottom></A><A REL=TOC HREF="../Front/Contents.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Contents]" SRC="../Graphics/Contents.gif" ALIGN=Bottom></A><A REL=INDEX HREF="../Front/X_Master.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Index]" SRC="../Graphics/Index.gif" ALIGN=Bottom></A><A REL=INDEX HREF="../Front/X_Symbol.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Symbols]" SRC="../Graphics/Symbols.gif" ALIGN=Bottom></A><A REL=GLOSSARY HREF="../Body/26_a.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Glossary]" SRC="../Graphics/Glossary.gif" ALIGN=Bottom></A><A HREF="../Front/X3J13Iss.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Issues]" SRC="../Graphics/Issues.gif" ALIGN=Bottom></A><BR>
|
|
|
|
<A REL=COPYRIGHT HREF="../Front/Help.htm#Legal"><I>Copyright 1996-2005, LispWorks Ltd. All rights reserved.</I></A><P>
|
|
</BODY>
|
|
</HTML>
|