[cl-who-devel] Interpolate lisp code inside the tag body

[Sebastian Tennant]

Quoth Matus Kmit <simply.nitaai at gmail.com>:
> How does one properly embed and evaluate lisp code inside the tag body?

You can 'embed' the *value* of an attribute, but not attributes themselves.

In practice this is not a serious limitation.

> (:p (fn)) does not work.

No, but this does:

 (flet ((fn () "value"))
   (with-html-output-to-string (s)
     (:p :attribute (fn))))
 => "<p attribute='value'></p>"

Note, that to do something similar in the text node of an element, you should
use one of the exported symbols; esc, fmt or str.

 http://weitz.de/cl-who/#esc

For example:

 (flet ((fn () "Attributes and their values"))
   (with-html-output-to-string (s)
     (:h1 (str (fn)))))
 => "<h1>Attributes and their values</h1>"

Hope this helps,

Sebastian
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