58 lines
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HTML
58 lines
4 KiB
HTML
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<!-- Common Lisp HyperSpec (TM), version 7.0 generated by Kent M. Pitman on Mon, 11-Apr-2005 2:31am EDT -->
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<HTML>
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<HEAD>
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<TITLE>CLHS: Variable *READTABLE*</TITLE>
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<LINK HREF="../Data/clhs.css" REL="stylesheet" TYPE="text/css" />
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<META HTTP-EQUIV="Author" CONTENT="Kent M. Pitman">
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<META HTTP-EQUIV="Organization" CONTENT="LispWorks Ltd.">
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<LINK REL=PREV HREF="v_rd_sup.htm">
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<LINK REL=UP HREF="c_reader.htm">
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</HEAD>
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<BODY>
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<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="v_rd_sup.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Previous]" SRC="../Graphics/Prev.gif" ALIGN=Bottom></A><A REL=UP HREF="c_reader.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Up]" SRC="../Graphics/Up.gif" ALIGN=Bottom></A><A REL=NEXT HREF="e_rder_e.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Next]" SRC="../Graphics/Next.gif" ALIGN=Bottom></A></H1>
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<HR>
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<A NAME="STreadtableST"><I>Variable</I> <B>*READTABLE*</B></A> <P>
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<P><B>Value Type:</B><P>
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<P>
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a <A REL=DEFINITION HREF="26_glo_r.htm#readtable"><I>readtable</I></A>. <P>
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<P><B>Initial Value:</B><P>
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<P>
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A <A REL=DEFINITION HREF="26_glo_r.htm#readtable"><I>readtable</I></A> that conforms to the description of Common Lisp syntax in <A REL=CHILD HREF="02_.htm">Section 2 (Syntax)</A>. <P>
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<P><B>Description:</B><P>
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<P>
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The <A REL=DEFINITION HREF="26_glo_v.htm#value"><I>value</I></A> of <A REL=DEFINITION HREF="#STreadtableST"><B>*readtable*</B></A> is called the <A REL=DEFINITION HREF="26_glo_c.htm#current_readtable"><I>current readtable</I></A>. It controls the parsing behavior of the <A REL=DEFINITION HREF="26_glo_l.htm#lisp_reader"><I>Lisp reader</I></A>, and can also influence the <A REL=DEFINITION HREF="26_glo_l.htm#lisp_printer"><I>Lisp printer</I></A> (e.g., see the <A REL=DEFINITION HREF="26_glo_f.htm#function"><I>function</I></A> <A REL=DEFINITION HREF="f_rdtabl.htm#readtable-case"><B>readtable-case</B></A>). <P>
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<P><B>Examples:</B><P>
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<P>
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<PRE>
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(readtablep *readtable*) => <A REL=DEFINITION HREF="26_glo_t.htm#true">true</A>
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(setq zvar 123) => 123
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(set-syntax-from-char #\z #\' (setq table2 (copy-readtable))) => T
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zvar => 123
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(setq *readtable* table2) => #<READTABLE>
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zvar => VAR
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(setq *readtable* (copy-readtable nil)) => #<READTABLE>
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zvar => 123
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</PRE>
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</TT> <P>
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<P><B>Affected By:</B><P>
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<P>
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<A REL=DEFINITION HREF="f_cmp_fi.htm#compile-file"><B>compile-file</B></A>, <A REL=DEFINITION HREF="f_load.htm#load"><B>load</B></A> <P>
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<P><B>See Also:</B><P>
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<P>
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<A REL=DEFINITION HREF="f_cmp_fi.htm#compile-file"><B>compile-file</B></A>, <A REL=DEFINITION HREF="f_load.htm#load"><B>load</B></A>, <B>readtable</B>, <A REL=CHILD HREF="02_aaa.htm">Section 2.1.1.1 (The Current Readtable)</A> <P>
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<P><B>Notes:</B> None.
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<P>
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<HR>
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<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>
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<A REL=COPYRIGHT HREF="../Front/Help.htm#Legal"><I>Copyright 1996-2005, LispWorks Ltd. All rights reserved.</I></A><P>
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