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ANSI Common Lisp 23 Reader 23.2 Dictionary of Reader
23.2.12 with-standard-io-syntax |
Macro |
- Syntax:
-
with-standard-io-syntax
{form}*
{result}*
- Arguments and Values:
-
forms - an implicit progn.
results - the values returned by the forms.
- Description:
-
Within the dynamic extent of the body of forms, all reader/printer control
variables, including any 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 next figure.
- Examples:
-
(with-open-file (file pathname :direction :output)
(with-standard-io-syntax
(print data file)))
;;; ... Later, in another Lisp:
(with-open-file (file pathname :direction :input)
(with-standard-io-syntax
(setq data (read file))))
- Allegro CL Implementation Details:
-
See The standard readtable is read-only, affect on with-standard-io-syntax and modifying the readtable in init files and with -e
in implementation.htm
for a note on the binding of *readtable* in a with-standard-io-syntax call. Note
the links are to the documentation for the current Allegro CL
version. Replace /current/ in the URL with the Allegro CL version
number to see similar documentation is earlier releases.
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