[pmwiki-users] pattern matching:

[The Editor]

Now that I'm getting the hang of expressions, I have a simple
question.  Why does Pm generally use double escapes \\ rather than
single escapes \.

Here's an example he sent me awhile back.  I think I understand the rest of it:

> > >     preg_replace('/\\{([-.:\\w]+)\\}/e', "Function('$1')", $text)

Just curious, and trying get a bitter better at this kind of thing.

Cheers,
Dan