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List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-orgmode-bounces+larch=yhetil.org@gnu.org Sender: "Emacs-orgmode" X-Migadu-Flow: FLOW_IN X-Migadu-To: larch@yhetil.org X-Migadu-Country: US ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1663709368; h=from:from:sender:sender:reply-to:subject:date:date: message-id:message-id:to:to:cc:mime-version:mime-version: content-type:content-type:list-id:list-help:list-unsubscribe: list-subscribe:list-post:dkim-signature; bh=VozvJasTvFxW2tRSA7bXTL499Cmc5fiSZV2qy6ncna0=; b=Kr3n89TPDHQys+R3DhBQpUVMYKhFXbZolldbnOTE4OHuqvUjoCoQ3PjD/4AChIQQvp2bKB ZkrmY/um9CTh0UclXYQFbShU7YRpUNKod3bi9oQLeBMT2+J+OZLJNw+n8MiS0INtW6PQv3 x+wW8hHrIdxo+tQSt1p/hUMfYvHt1a/eaDgeMgl94wPgaKeYKJPQ5OQ2cw6Q6QqAAdoF85 01Pz/hI310IgHQjcDIFoS2vHQOvQLFmdm6wjEG8VObjF8G0CxBPIxqFfxmXW7UG9E19LpD 66ZY+ylFkJdvSIFuW39XLvo7dmssHR8WdwTWTxh3aaPGVQya7nogPModLyQ0MQ== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1663709368; a=rsa-sha256; cv=none; b=Nq++2Es7An7I9iJ1x0Fkx/0cP82ZxsOBnoffx6Lf5E7oK5HselK4RTH+p6lljvp7+P4zpF L0Sv5MJfpSyn7030pY/v5O/tQMKYFu7sxtN2ENQgQep5vTZVt43jHbJpN/C4Q4tsNuPOpx SnDjPPlS0+PyvlczKZVLlhFR738LGiriGvACmczPv2ZRStPYcQrGKMRW0SG0kgeaqVSlGa 15O3GNyGVept6ZPtsBE0TU7a3kakCwWh98skKyt7YgRFobXnF1tO2+cKIrMozIOg4Yf8ej PKwl368GG2l3c2ukqAoVVEoWewxmkb2xai7XQZWq/LZRAyGc+XCoDHyp8isaoQ== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=g5jUr85r; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (aspmx1.migadu.com: domain of "emacs-orgmode-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="emacs-orgmode-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: -5.13 Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=g5jUr85r; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (aspmx1.migadu.com: domain of "emacs-orgmode-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="emacs-orgmode-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: A80B63D944 X-Spam-Score: -5.13 X-Migadu-Scanner: scn0.migadu.com X-TUID: ehh5Z3nTNdcY To: emacs-orgmode@gnu.org Subject: Bug: org-html-example-block can produce multiple class attributes [9.4 (9.4-dist @ /usr/share/emacs/site-lisp/elpa/org-9.4/)] From: Joshua Honeycutt --text follows this line-- Emacs : GNU Emacs 27.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.24, cairo version 1.16.0) of 2021-03-27, modified by Debian Package: Org mode version 9.4 (9.4-dist @ /usr/share/emacs/site-lisp/elpa/org-9.4/) I added a class attribute to an example block as in: #+ATTR_HTML :class cmdout #+BEGIN_EXAMPLE text text text #+END_EXAMPLE I expected this to produce a html tag like: 

but the output was instead:

   

In my browser this second class assignment was ignored.

org-html-example-block could instead add the 'example' class to other
attributes which get placed in the 
 tag. I modified it to achieve
this outcome like this (from be2246a550b444560ec1718c11185ac7bfcfa646):

diff --git a/lisp/ox-html.el b/lisp/ox-html.el
index 9024701aa..7036f44cd 100644
--- a/lisp/ox-html.el
+++ b/lisp/ox-html.el
@@ -2546,8 +2546,11 @@ information."
    (let ((attributes (org-export-read-attribute :attr_html example-block)))
      (if (plist-get attributes :textarea)
         (org-html--textarea-block example-block)
-      (format "
\n%s
"
+      (format "\n%s
"
               (let* ((reference (org-html--reference example-block info))
+                    (class (plist-get attributes :class))
+                    (attributes (plist-put attributes :class
+                                   (if class (concat class " example") "example")))
                      (a (org-html--make-attribute-string
                          (if (or (not reference) (plist-member attributes :id))
                              attributes