emacs - 'Symbol's function definition is void: nil' which symbol? -

emacs - 'Symbol's function definition is void: nil' which symbol? -

i'm getting next error when starting emacs: (as shown messages buffer):

c-font-lock-fontify-region: symbol's function definition void: nil

how track downwards causing error in function? debug-on-error true, still doesn't give more info here.

the symbol nil. not name function.

generally speaking, debug error, need set debug-on-error t , @ *backtrace* buffer. if no *backtrace* buffer appears (which case here), means caller of function signals error catches error. need chase code looking condition-case , disable it. luck :-(

looking @ c-font-lock-fontify-region definition in progmodes/cc-mode.el, see there

(funcall (default-value 'font-lock-fontify-region-function) new-beg new-end verbose)

which can cause error if (default-value 'font-lock-fontify-region-function) nil.

emacs elisp