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====== Macro WITH-STANDARD-IO-SYNTAX ====== ====Syntax==== * **with-standard-io-syntax** //form//''*'' → //result//''*'' ====Arguments and Values==== * //forms// - an //[[CL:Glossary:implicit progn]]//. * //results// - the //[[CL:Glossary:values]]// returned by the //[[CL:Glossary:forms]]//. ====Description==== Within the dynamic extent of the body of //forms//, all reader/printer control variables, including any //[[CL:Glossary:implementation-defined]]// ones not specified by this standard, are bound to values that produce standard read/print behavior. The values for the variables specified by this standard are listed in the below table. ^ Variable ^ Value ^ | **[[CL:Variables:*package*]]** | The **''cl-user''** //[[CL:Glossary:package]]// | | **[[CL:Variables:*print-array*]]** | **[[CL:Constant Variables:t]]** | | **[[CL:Variables:*print-base*]]** | ''10'' | | **[[CL:Variables:*print-case*]]** | **'':upcase''** | | **[[CL:Variables:*print-circle*]]** | **[[CL:Constant Variables:nil]]** | | **[[CL:Variables:*print-escape*]]** | **[[CL:Constant Variables:t]]** | | **[[CL:Variables:*print-gensym*]]** | **[[CL:Constant Variables:t]]** | | **[[CL:Variables:*print-length*]]** | **[[CL:Constant Variables:nil]]** | | **[[CL:Variables:*print-level*]]** | **[[CL:Constant Variables:nil]]** | | **[[CL:Variables:*print-lines*]]** | **[[CL:Constant Variables:nil]]** | | **[[CL:Variables:*print-miser-width*]]** | **[[CL:Constant Variables:nil]]** | | **[[CL:Variables:*print-pprint-dispatch*]]** | The //[[CL:Glossary:standard pprint dispatch table]]// | | **[[CL:Variables:*print-pretty*]]** | **[[CL:Constant Variables:nil]]** | | **[[CL:Variables:*print-radix*]]** | **[[CL:Constant Variables:nil]]** | | **[[CL:Variables:*print-readably*]]** | **[[CL:Constant Variables:t]]** | | **[[CL:Variables:*print-right-margin*]]** | **[[CL:Constant Variables:nil]]** | | **[[CL:Variables:*read-base*]]** | ''10'' | | **[[CL:Variables:*read-default-float-format*]]** | **[[CL:Types:single-float]]** | | **[[CL:Variables:*read-eval*]]** | **[[CL:Constant Variables:t]]** | | **[[CL:Variables:*read-suppress*]]** | **[[CL:Constant Variables:nil]]** | | **[[CL:Variables:*readtable*]]** | The //[[CL:Glossary:standard readtable]]// | ====Examples==== <blockquote> ([[CL:Macros:with-open-file]] (file pathname :direction :output) (with-standard-io-syntax ([[CL:Functions:print]] data file)) nil) <r>NIL</r> ;;; ... Later, in another Lisp: ([[CL:Macros:with-open-file]] (file pathname :direction :input) (with-standard-io-syntax ([[CL:Macros:defvar]] *data* ([[CL:Functions:read]] file)))) <r>*DATA*</r> </blockquote> ====Affected By==== None. ====Exceptional Situations==== None. ====See Also==== None. ====Notes==== None.