Gradle Code Editor Suggestions

Intellij 11 supports gradle, see their webhelp for details.

An enhanced plugin appears to be scheduled for 11.1 in Q2 2012, their wiki has a page that acts as a worklog for the developer who is implementing it.

Check out this link for tooling advice from Gradle.

I use the Groovy & Grails Tool Suite for Groovy support, it works great with the Gradle Eclipse plugin from the tooling site.

I think the only IDE that actually has rudimentary DSL autocomplete support for Gradle is SpringSource STS. You will need to install the Gradle plugin.