How do I turn off vhdl-mode in emacs?

Question

I am learning emacs at the moment and tried to write an easy vhdl program for testing. I can see that the vhdl-mode might be an interesting feature, but I would like to know

Answer 1

Change to some other mode, e.g.

M-x fundamental-mode RET

or

M-x indented-text-mode RET

re-enable it by entering

M-x vhdl-mode RET

Answer 2

Use the command M-x fundamental-mode, that is:

• Press (and hold) the meta key (which is usually the Alt key)
• Press x

This will take the cursor into the echo area at the bottom of the screen/frame. Type fundamental-mode and press return.

To disable VHDL mode permanently, you will have to change the file-extension mapping used by emacs to associate a file's extension with a particular major mode. You can do this by writing a custom .emacs configuration file. Look for auto-mode-alist in the emacs manual:

(setq auto-mode-alist (remove (rassoc 'vhdl-mode auto-mode-alist) auto-mode-alist))