Hi,
The attached patch places the latex source into alt html image tags as
described below. I think it should be safe, in that I remove all "s
from inside of the alt string.
Thanks for the implementation advice -- Eric
diff --git a/lisp/org-html.el b/lisp/org-html.el
index b8925e7..2246daf 100644
--- a/lisp/org-html.el
+++ b/lisp/org-html.el
@@ -1529,7 +1529,8 @@ lang=\"%s\" xml:lang=\"%s\">
"Create image tag with source and attributes."
(save-match-data
(if (string-match "^ltxpng/" src)
- (format "<img src=\"%s\"/>" src)
+ (format "<img src=\"%s\" alt=\"%s\"/>"
+ src (org-find-text-property-in-string 'org-latex-src src))
(let* ((caption (org-find-text-property-in-string 'org-caption src))
(attr (org-find-text-property-in-string 'org-attributes src))
(label (org-find-text-property-in-string 'org-label src)))
Modified lisp/org.el
diff --git a/lisp/org.el b/lisp/org.el
index e30c49a..480e9f1 100644
--- a/lisp/org.el
+++ b/lisp/org.el
@@ -15183,7 +15183,12 @@ Some of the options can be changed using the variable
(push ov org-latex-fragment-image-overlays)
(goto-char end))
(delete-region beg end)
- (insert link))))))))
+ (let ((link-beg (point))
+ (link-end (progn (insert link) (point))))
+ (add-text-properties
+ link-beg link-end
+ (list 'org-latex-src
+ (replace-regexp-in-string "\"" "" txt)))))))))))
;; This function borrows from Ganesh Swami's latex2png.el
(defun org-create-formula-image (string tofile options buffer)
Carsten Dominik <carsten.domi...@gmail.com> writes:
> On Mar 26, 2010, at 4:01 PM, Eric Schulte wrote:
>
>> Hi,
>>
>> HTML <img> tags allow both alternate text (rendered when the image
>> can't
>> be rendered), as well as titles which show as tooltips on hover. I
>> wonder if it would be difficult to place the text latex used in
>> generating an image into these two fields. If not then I at least
>> would
>> find it useful.
>
> It is not trivial, but not too hard either.
>
> It is not trivial because Org first produces the images and inserts
> org-style links. Later, in a second step, these links are replaced
> (formatted for HTML).
> One way to solve this is that `org-format-latex' will add this
> information
> as text properties to the link. Then later, when the HTML formatting
> is done,
> the text property could be retrieved and converted into the attributes
> you are mentioning.
>
> You have worked on org-format-latex before, I think this should be
> relatively easy for you.
>
> - Carsten
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