RE: [xml-dev] XPath expression which checks that all commas areescaped

["Costello, Roger L." <costello@mitre.org>]

Michael Kay wrote:

> I suspect that there must only be one
> backslash before the comma: if there
> are two ("\\,") then the comma is not
> escaped because the "\\" represents
> a real backslash.

Wow! 

I had not thought about that. 

> not(matches(replace(., '\\\\', ''), '^,|[^\\],'))

Awesome!

/Roger