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When editing HTML in emacs, is there a way to automatically pretty-format a blob of markup, changing something like this:
<table>
<tr>
<td>blah</td></tr></table>
...into this:
<table>
<tr>
<td>
blah
</td>
</tr>
</table>
744
You can do sgml-pretty-print and then indent-for-tab on the same region/buffer, provided you are in html-mode or nxml-mode.
sgml-pretty-print adds new lines to proper places and indent-for-tab adds nice indentation. Together they lead to properly formatted html/xml.
93
By default, when you visit a .html file in Emacs (22 or 23), it will put you in html-mode. That is probably not what you want. You probably want nxml-mode, which is seriously fancy. nxml-mode seems to only come with Emacs 23, although you can download it for earlier versions of emacs from the nXML web site. There is also a Debian and Ubuntu package named nxml-mode. You can enter nxml-mode with:
M-x nxml-mode
You can view nxml mode documentation with:
C-h i g (nxml-mode) RET
All that being said, you will probably have to use something like Tidy to re-format your xhtml example. nxml-mode will get you from
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head></head>
<body>
<table>
<tr>
<td>blah</td></tr></table>
</body>
to
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head></head>
<body>
<table>
<tr>
<td>blah</td></tr></table>
</body>
</html>
but I don't see a more general facility to do line breaks on certain xml tags as you want. Note that C-j will insert a new line with proper indentation, so you may be able to do a quick macro or hack up a defun that will do your tables.
43
http://www.delorie.com/gnu/docs/emacs/emacs_277.html
After selecting the region you want to fix. (To select the whole buffer use C-x h)
C-M-q
Reindent all the lines within one parenthetical grouping(indent-sexp).
C-M-\
Reindent all lines in the region (indent-region).
14
i wrote a function myself to do this for xml, which works well in nxml-mode. should work pretty well for html as well:
(defun jta-reformat-xml ()
"Reformats xml to make it readable (respects current selection)."
(interactive)
(save-excursion
(let ((beg (point-min))
(end (point-max)))
(if (and mark-active transient-mark-mode)
(progn
(setq beg (min (point) (mark)))
(setq end (max (point) (mark))))
(widen))
(setq end (copy-marker end t))
(goto-char beg)
(while (re-search-forward ">\\s-*<" end t)
(replace-match ">\n<" t t))
(goto-char beg)
(indent-region beg end nil))))
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