May 2008 - cl-who-devel@common-lisp.net - mailman3.common-lisp.net

[cl-who-devel] with-html-output-to-string (str)
by Victor Kryukov 09 Aug '08

09 Aug '08

The following code produces errors on two of my systems (Linux and Mac) for both CLISP and SBCL: (require 'asdf) (asdf:oos 'asdf:load-op :cl-who) (defpackage :test (:use :cl :cl-who)) (in-package :test) (with-html-output-to-string (str) (:html (:title "test"))) It looks like a bug, macro variable capture, to me, but it may well be my misunderstanding/misuse of CL-WHO. I'd appreciate your comments, as usual. -- Yours Sincerely, Victor Kryukov

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[cl-who-devel] When tagname/attributes can be determined only at runtime (WITH-HTML-TAG)
by Chaitanya Gupta 25 May '08

25 May '08

Hi, While using CL-WHO recently, I ran into a small problem wherein some tagnames/attributes could be determined only at runtime. Not knowing any easy way to do this "out of the box" in CL-WHO, I wrote this small macro (inspired by XML-EMITTER:WITH-TAG) - (defmacro with-html-tag ((name &optional attributes) &body body) (let ((body-fn (gensym))) `(flet ((,body-fn () ,@body)) (call-with-html-tag ,name ,attributes #',body-fn)))) (defun call-with-html-tag (name attributes body-fn) (let ((tag-name (typecase name (symbol (string-downcase name)) (t name)))) (format t "<~A" tag-name) (when attributes (format t "~{~A~}" (cl-who:convert-attributes attributes))) (format t ">") (funcall body-fn) (format t "</~A>" tag-name))) Note that it writes only to *standard-output*. Usage ----- (defvar *x* :blockquote) => *X* (with-output-to-string (*standard-output*) (cl-who:with-html-output (*standard-output*) (:body (with-html-tag (*x*) (cl-who:htm (:p "foo bar")))))) => "<body><blockquote><p>foo bar</p></blockquote></body>" (with-output-to-string (*standard-output*) (cl-who:with-html-output (*standard-output*) (:body (with-html-tag (*x* '(("id" . "foo123"))) (cl-who:htm (:p "foo bar")))))) => "<body><blockquote id='foo123'><p>foo bar</p></blockquote></body>" I think this will be a useful addition to CL-WHO (although this particular implementation can be improved a bit). Or did I miss out on some other way that CL-WHO can easily handle this? Chaitanya

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[cl-who-devel] ESC inside FMT doesn't get expanded
by Leslie P. Polzer 02 May '08

02 May '08

Is this some kind of CL limitation? Leslie

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