Handling invalid HTML

[Jonathan Yavner]

Juri Linkov writes:
> 1. The valid string delimiter for HTML attribute values is the
> quotation character.  However, some HTML files on the Web use
> apostrophes, e.g.
>    <meta http-equiv='Content-Type' content='text/html; charset=UTF-8'>
> The program that generates such non-standard meta headers is
> identified as 'Microsoft DHTML Editing Control' (no surprise).

http://www.w3.org/TR/html4/intro/sgmltut.html#h-3.2.2
    "By default, SGML requires that all attribute values be delimited
    using either double quotation marks (ASCII decimal 34) or single
    quotation marks (ASCII decimal 39). ... In certain cases, authors
    may specify the value of an attribute without any quotation marks."

In XHTML the no-marks case was eliminated, but the use of 'apostrophes' 
is still valid.  There are many complaints one can make about 
Microsoft, but this isn't one of them.

--Jonathan