• From: Amelia A Lewis <amyzing@t...>
• To: Michael Kay <mike@s...>
• Date: Wed, 19 Jan 2022 19:48:33 -0500

On Thu, 20 Jan 2022 00:08:00 +0000, Michael Kay wrote:
>> What does the WSP (WSP = whitespace) signify? Does it signify:
>> 
>> (a) Space between the first attribute and a second attribute? E.g. 
>> WSP attribute-name '=' "value"
>> (b) Space just prior to the end angle bracket? I.e., WSP '>'
> 
> It doesn't signify anything. The parser just has to skip it. That's 
> hardly difficult.

Seriously. No look-ahead required, either. The parser's past the 
start-tag start indicator ('<' and the start-tag identifier (a qname). 
If the next thing (discarding whitespace) isn't '>' or '/' (followed by 
'>'), then it must be another qname, hold onto it, keep discarding 
whitespace, expecting '=' now, then either ' or " (and make a note of 
which it is, because its the value-start indicator and the 
value-complete indicator and the other one is then just another 
character in the value space if it appears), and the value is the 
content between value-start and value-end, and you're done, with a 
briefly-save attribute-or-namespace name, and a value, and that's that 
production, repeat it until you get to '>' and no look-ahed

• References:
  • XML start tags are wicked complicated
    • From: Roger L Costello <costello@m...>
  • Re: XML start tags are wicked complicated
    • From: Michael Kay <mike@s...>