I’m running Eclipse – Indigo and have a project configured for EGit that uses Gradle to build. Today I noticed in the Package Explorer of eclipse, the build.gradle file now has a little red slash through its icon:

Where did the little red slash come from and what does it mean? Is it an egit thing (I don’t think so, the file doesn’t show up in git status from the command line nor does this red slashy icon appear in Preferences, Team, Git, Label Decorations)? I never noticed it before today, which leads me to believe that it hasn’t showed up until today.
EDIT: Is there any chance .gitignore is contributing to confusion in eclipse? Here’s the contents of my .gitignore
/test-output
/logs
# Gradle
.gradle
/build
# OSX
.DS_Store
# Eclipse
.classpath
.project
.tomcatplugin
.settings/
/work
/bin
# Emacs backup files
*~
\#*\#/bin
The red slash is a Groovy-Eclipse thing. It means that the gradle build file is being interpreted as a groovy file, but this groovy file is not on the build path (and this makes sense because gradle build files are not typically in source folders).
Is something not working, or are you just curious about the overlay?