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Re: some proposed tweaks to HTML mode

From: Eric Abrahamsen
Subject: Re: some proposed tweaks to HTML mode
Date: Fri, 22 Mar 2019 15:55:01 -0700
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

Stefan Monnier <address@hidden> writes:

>>> Indeed, `class` and `id` should be automatically added to all elements
>>> (i.e. not in the above list but directly in the sgml-attributes code).
>>> But for many elements it makes sense to not query any attributes at all
>>> since they almost never have any attributes (not even "class" nor "id").
>> I was also thinking `sgml-attributes', but I'm less sure about excluding
>> elements.
> I didn't mean to exclude elements.  I meant that if attributes are
> queried then we do want to include `class` and `id`, but if they're not
> then we shouldn't change it just on the premise that `class` or `id`
> could be added.

Yes, that makes more sense.

>> Making sure I follow you, the definition of eg `html-ordered-list' would
>> then look like:
>> (define-skeleton html-ordered-list
>>   "HTML ordered list tags."
>>   nil
>>   \n "<ol>" \n
>>   "<li>" _ (if sgml-xml-mode "</li>") \n
>>   "</ol>" > \n)
> Right.
>> Is that right? This does more or less the right thing, though it does in
>> some cases still insert a newline. In the text below, with point at the
>> vertical bar, the above definition still inserts another closing
>> newline:
>> <div>
>>   <div>|
>>   </div>
>> </div>
> I don't think it adds a closing newline any more than the current
> code does: you start with point in front of 2 newlines and you end with
> 2 newlines after </ol>.

That was some sort of thinko, or temporary blindness.

>> I found this bit of the Autotype manual confusing:
>> ‘?\n’
>>      Insert a newline and align under current line, but not if this is
>>      the last element of a skeleton and the newline would be inserted at
>>      end of line, or this is the first element and the newline would be
>>      inserted at beginning of line.  Use newline character ‘?\n’ to
>>      prevent alignment.  Use ‘"\n"’ as the first or last string element
>>      of a skeleton to insert a newline unconditionally.
>> Here, "align" has nothing to do with "indent", right?
> Right.
>> This appears to
>> describe the behavior of ?\n as newline-and-align, but then goes on to
>> say we should use ?\n to *prevent* alignment.
> Indeed, \n is the magic one while ?\n just inserts the LF char
> without any extra processing (just like "\n").

Okay, I will work up the html-mode changes as a proper bug report in the
next few days, and maybe do another doc patch for this bit of the


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