Emacs treats .scala files as .sh shell script files

hvesalai / emacs-scala-mode

The definitive scala-mode for emacs

http://ensime.org

GNU General Public License v3.0

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Emacs treats .scala files as .sh shell script files #47

Closed mcandre closed 11 years ago

mcandre commented 11 years ago

I installed scala-mode2 and added (require 'scala-mode2) to ~/.emacs, but Emacs still treats .scala files as .sh shell scripts.

hvesalai commented 11 years ago

I'm sorry to hear you are having problems. I bet it is something pretty trivial that you need to tweak.

Please check the following:

you have the correct emacs version (i.e. emacs 24, no older will do)
double check that you followed the https://github.com/hvesalai/scala-mode2/blob/master/README.md instructions. To be on the safe side, follow the steps for "Manual" installation (i.e. without package.el).
check you .emacs file that it doesn't contain anything else that could interfere. To make sure, comment out everything other than the scala-mode stuff.

To make sure you have scala-mode properly installed, open a .scala file and type in M-x scala-mode. This should turn the scala-mode on and you should see the text "(Scala)" on the status row.

If this fails, please include a link to your emacs file here. Use gist, pastebin or other similar service.

mcandre commented 11 years ago

Turns out mimetypes :( Emacs is doing the right thing, noticing my .scala files have the text/x-shellscript mimetype and opening them in shell script mode.

Mac is using the wrong mimetype, and there's no easy way to correct it.

http://superuser.com/questions/557281/how-can-i-set-a-files-mimetype-in-mac-os-x

hvesalai commented 11 years ago

I bet there are many other mac users (but I am not). Join the #scala irc channel and ask there for advice.

hvesalai commented 11 years ago

Or is Mac is anything like other unixes, then there might be a /etc/mime.types file that you can edit.

mcandre commented 11 years ago

It turns out scala-mode2 is doing everything right. My shebang line is to blame:

#!/bin/sh
exec scala "$0" "$@"
!#

Because file uses shebang lines to detect mimetypes, and Emacs uses mimetypes to assign major modes. So #!/bin/sh maps to 'text/x-shellscript' maps to Sh mode.

Do you happen to know a good shebang for Scala code that doesn't corrupt the mimetype?

hvesalai commented 11 years ago

http://stackoverflow.com/questions/15077341/whats-a-shebang-line-for-scala-that-doesnt-corrupt-mimetype