Highlighting not working

[javiercuadrado]

Atom does not highlights syntax on .plantUML files. It works with .pu files

I'm using Atom 1.0.2 on windows 7

[bewam]

rename them in .pu or .puml, it will surely work.
from the packages/language-plantuml/grammars/plantuml.json:

"scopeName": "source.plantuml",
"name": "PlantUML",
"fileTypes": [
"pu", "puml"
]

If not, you can install the filetype package.