String escaping in Grails GSP

Hello, I've come across a problem, I'm trying to pass in a regular expression to a taglib as a string, and I need to include some groups in the regex, which requires the [ and ] characters.

However when I try to insert them in my gsp file, they are seen as starting a list or map and throw an error.

I tried using ' instead of " and even slashy strings, but none worked.

Heres an example of what I'm talking about:

Code:

---

<g:tag pattern="/[A-z]{2}/" />

---

The [ starts a list and I can't seem to escape it which causes an error in the IDE and disallows building/running, I put a \ infront of it and nothing.
Any suggestions?
The IDE i'm using is IntelliJ IDEA 9 Ultimate.

It seems to work fine if you don't have the '/' characters in there.

are you using an IDE or just the command line?

I've come up with a few solutions to get the IDE to stop seeing it as an error.

1: Inject it with Groovy using <%%> tags
Ala:

Code:

---

<% def pattern = /patternhere/ %>
<g:tag pattern="${pattern}"/>

---

That works fine.

2: Fake it out with an empty injection.

Code:

---

<g:tag pattern="${''}[A-z]{2}" />

---

works fine too and doesn't error for some reason.

I'm probably going with solution 2 for now, just to cut down on number of lines.
Maybe IDEA 10 fixed this issue, at least it's not a GRAILS / GROOVY bug