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GNU Emacs: “find-tag” – from “use” to “definition”

In case of Perl files you have to help “the mode” by creating a TAGS file beforehand through running “etags …”.

In case of JavaScript files it works out of the box and w/o etags or anything like that.

I have been using Emacs (and VI) for dozens of years now, but I did not really bother using that feature – my tactile, typing and editor capabilities are good enough to get around w/o find-tag.

But now somebody at work sort of kept nagging, how to achieve that, so eventually I looked it up. And I am glad I did. And also to find out the differences.

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