Fix for attribute *=, ^=, and $= in cases where special attributes.

[bjmiller@…]

In FF 1.5, selecting attribute @name where the name attribute is not present results in a "z has no properties" error, because z, which should be "" when the attribute is not present, has a value of null.

[anonymous]

This has solved the problem:

Change jQuery.expr."@" from

"@": {
	"=": "z==m[4]",
	"!=": "z!=m[4]",
	"^=": "!z.indexOf(m[4])",
	"$=": "z.substr(z.length - m[4].length,m[4].length)==m[4]",
	"*=": "z.indexOf(m[4])>=0",
	"": "z"
},

to

"@": {
	"=": "z==m[4]",
	"!=": "z!=m[4]",
	"^=": "z && !z.indexOf(m[4])",
	"$=": "z && z.substr(z.length - m[4].length,m[4].length)==m[4]",
	"*=": "z && z.indexOf(m[4])>=0",
	"": "z"
},

We're just testing for null before we try to call the indexOf() or substr() methods that we expect from strings.

[joern]

Fixed in SVN.