Determine path to source code of current mode in Emacs 23 -

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i'm trying out new python mode emacs 23, i'm not sure how tell if i'm using new mode (source code located @ ~/.elisp/python.el) or bundled python.el mode.

is there way find out current (or active) mode loaded from? c-h m not seem provide information, , don't know else look.

c-hf python-mode ret tell file lives in, , can browse file following link.

you can use m-x find-function ret python-mode ret go there directly.

(i find handy have find-function bound c-hc-f)

in general, use following:

m-: (find-function major-mode) ret


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