Warning: This is the manual of the legacy Guile 2.0 series. You may want to read the manual of the current stable series instead.
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Any scheme value may be written to a port. Not all values may be read back in (see Scheme Read), however.
Send a representation of obj to port or to the current output port if not given.
The output is designed to be machine readable, and can be read back
with read
(see Scheme Read). Strings are printed in
double quotes, with escapes if necessary, and characters are printed in
‘#\’ notation.
Send a representation of obj to port or to the current output port if not given.
The output is designed for human readability, it differs from
write
in that strings are printed without double quotes and
escapes, and characters are printed as per write-char
, not in
‘#\’ form.
As was the case with the Scheme reader, there are a few options that affect the behavior of the Scheme printer.
Display the current settings of the read options. If setting is
omitted, only a short form of the current read options is
printed. Otherwise if setting is the symbol help
, a
complete options description is displayed.
The set of available options, and their default values, may be had by
invoking print-options
at the prompt.
scheme@(guile-user)> (print-options) (quote-keywordish-symbols reader highlight-suffix "}" highlight-prefix "{") scheme@(guile-user)> (print-options 'help) highlight-prefix { The string to print before highlighted values. highlight-suffix } The string to print after highlighted values. quote-keywordish-symbols reader How to print symbols that have a colon as their first or last character. The value '#f' does not quote the colons; '#t' quotes them; 'reader' quotes them when the reader option 'keywords' is not '#f'. escape-newlines yes Render newlines as \n when printing using `write'. r7rs-symbols no Escape symbols using R7RS |...| symbol notation.
These options may be modified with the print-set! syntax.
Modify the print options. Due to historical oddities, print-set!
is a macro that expects an unquoted option name.
Next: Fly Evaluation, Previous: Scheme Read, Up: Read/Load/Eval/Compile [Contents][Index]