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doc: Add explanation on how to avoid escaping in SXML

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* doc/ref/sxml.texi (Reading and Writing XML): Add explanation on using
  a procedure to avoid escaping.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
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Ekaitz Zarraga 2023-10-05 22:42:44 +02:00 • committed by Ludovic Courtès
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doc/ref/sxml.texi
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@ -204,6 +204,21 @@ the current output port, unless the optional argument @var{port} is
present.
@end deffn
Output is automatically escaped as expected for a serializer.
@example
(sxml->xml `(code "<i>Some example</i>"))
@result{} <code>&lt;i&gt;Some example&lt;/i&gt;</code>
@end example
In order to avoid some string from being escaped, it must be wrapped in a
procedure that writes the string to the @code{(current-output-port)}.
@example
(sxml->xml `(code ,(lambda () (display "<i>Some example</i>"))))
@result{} <code><i>Some example</i></code>
@end example
@deffn {Scheme Procedure} sxml->string sxml
Detag an sxml tree @var{sxml} into a string. Does not perform any
formatting.