emacs: is before-save-hook a local variable?

Question

how would I figure this out?

I added delete-trailing-whitespace to the before-save-hook in my c-mode-common-hook, but it loo

Answer 1

Never wanted to do this before, but this should work:

(set (make-local-variable 'before-save-hook) '((lambda() (rg-msg "foobie")))) 

In general C-h v will prompt for a variable name and display a description telling you whether the var is buffer-local.

before-save-hook is a variable defined in `files.el'. Its value is nil

This variable is potentially risky when used as a file local variable.

Documentation: Normal hook that is run before a buffer is saved to its file.

You can customize this variable.

vs.

next-error-function is a variable defined in `simple.el'. Its value is nil

Automatically becomes buffer-local when set in any fashion. This variable is potentially risky when used as a file local variable.

Documentation: Function to use to find the next error in the current buffer. The function is called with 2 parameters:

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