file-mode

Looks for a syntax mode of the form -*- mode: <NAME> -*- and sets the syntax highlighting to NAME.
dblezek
1.0.1 366
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file-mode package

Atom.io package to set syntax mode based on comment string (-- mode: MODE --).

Why?

Automatically sets the syntax highlighting mode when Atom can't properly guess it.

How?

Somewhere in the file, create a comment of this form:

# -*- mode: NAME -*-

When the file is opened, the syntax will be set to NAME, e.g. CoffeeScript, bash, etc... The matching is exact and case sensitive, caveat emptor.