[gnu.emacs] How to find and edit the definition of a function

vchaudha@oracle.uucp (Vikram Aaditya Chaudhary) (01/17/89)

How can I "find" the definition of a particular function, say,
find-file...?

Then, I could make a copy and customize it.

In ZMacs, there is a function called edit-definition which did
exactly this.  I suppose I could use find-tag, but then I have
no idea what tag table to use.  Is there a tag table with tags for all 
GnuEmacs functions?

Please e-mail,
Thanks,

Vikram

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