* bug#71685: [PATCH] fix shr rendering in tables without tbody
@ 2024-06-20 19:15 JD Smith
0 siblings, 0 replies; only message in thread
From: JD Smith @ 2024-06-20 19:15 UTC (permalink / raw)
To: 71685
[-- Attachment #1: Type: text/plain, Size: 1080 bytes --]
It is very common for HTML tables to include a header (<thead>) and/or footer (<tfoot>) without using <tbody>. Modern browsers simply supply an implicit <tbody>..</tbody> around all the unparented rows in a table. `shr' does not handle this common case correctly. Below is an example with <thead> but not <tbody>. It prints the header, but then subsumes it again inside the derived body, printing the header again in a single cell.
The relevant function which should handle this is `shr--fix-tbody'. The included patch to this function simply avoids including `thead` and `tfoot` children in the implicit body.
(let ((shr-table-vertical-line ?|)
(shr-table-horizontal-line ?-))
(shr-insert-document
(with-temp-buffer
(insert "<table>
<thead><tr><th>A</th><th>B</th></tr></thead>
<tr><td>1</td><td>2</td></tr>
<tr><td>3</td><td>4</td></tr>
</table>")
(libxml-parse-html-region))))
---------
| --- -- |
||A |B | |
| --- -- |
||AB | |
| --- -- |
||1 |2 | |
| --- -- |
||3 |4 | |
| --- -- |
---------
[-- Attachment #2: shr_fix_tbody.patch --]
[-- Type: application/octet-stream, Size: 595 bytes --]
--- shr.el 2024-06-20 15:03:52
+++ shr_fix_tbody.el 2024-06-20 15:00:49
@@ -2053,8 +2053,9 @@
(defun shr--fix-tbody (tbody)
(nconc (list 'tbody (dom-attributes tbody))
(cl-loop for child in (dom-children tbody)
- collect (if (or (stringp child)
- (not (eq (dom-tag child) 'tr)))
+ for tag = (and (not (stringp child)) (dom-tag child))
+ unless (or (eq tag 'thead) (eq tag 'tfoot))
+ collect (if (not (eq tag 'tr))
(list 'tr nil (list 'td nil child))
child))))
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2024-06-20 19:15 bug#71685: [PATCH] fix shr rendering in tables without tbody JD Smith
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