Recognize a file with a shebang and no extension

Question

I know that emacs can recognize a file by the extension, a -*- mode -*- first line, and even by the shebang line, but what do I do if I want to override the shebang?

For example, a script that starts with

#!/usr/bin/env python2.7
...

won't be recognized by the shebang line alone. I also can't add in a -*-python-*- line, because then the shell tries to parse it. How do I deal with this?

Answer 1

You put the -*- mode: python -*- in the second line (special exception, added specifically for the shebang thingies).

Answer 2

You can try putting something like

(add-to-list 'interpreter-mode-alist '("python2.7" . python-mode))

in your .emacs. See “Choosing File Modes” for more info.

Answer 3

Like this:

#!/usr/bin/env python2.7

print "test"

# Local Variables:
# mode: python
# End:

This information comes from Specifying File Variables node of info.

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