[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

A different comment syntax question

• From: David Megginson <david@m...>
• To: xml-dev@i...
• Date: Fri, 17 Jul 1998 11:59:43 -0400

Rob Cameron writes:

 > If, as I assume, the answer is that only the double hyphen case
 > is a concern, then the grammar needs to be changed.
 > 
 >    Comment ::= '<!--' (Char* - (Char* '--' Char*)) '-->'

I imagine that there would be look-ahead problems: a parser would find
'--', then see that '-' is the following character, and then report an
error.  I don't think that anything in the XML 1.0 REC currently
requires more than one character look-ahead.

As a simple work-around, I'd recommend always adding a space to the
beginning and end of your comment string before surrounding it by the
delimiters, so you'd have

  <!-- This is a comment - -->

rather than

  <!--This is a comment--->


All the best,


David

-- 
David Megginson                 david@m...
           http://www.megginson.com/

xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i...
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/
To (un)subscribe, mailto:majordomo@i... the following message;
(un)subscribe xml-dev
To subscribe to the digests, mailto:majordomo@i... the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa@i...)

• References:
  • A different comment syntax question
    • From: Rob Cameron <cameron@c...>

• Prev by Date: A different comment syntax question
• Next by Date: Re: A different comment syntax question
• Previous by thread: A different comment syntax question
• Next by thread: Re: A different comment syntax question
• Index(es):
  • Date
  • Thread