bug#2008: etags - file-of-tag-function setting has no effect

[Lars Magne Ingebrigtsen]

Trey Jackson <bigfaceworm@gmail.com>, Trey Jackson
<bigfaceworm@gmail.com> writes:

> I tried setting file-of-tag-function, but it appears not to have any effect
> (it's never called) because the 'etags-recognize-tags-table function makes
> the variable buffer local to the TAGS file/buffer, and then sets it to
> 'etags-file-of-tag.  So my setting has no effect (unless I specifically set
> it in TAGS buffers *after* the tags file is loaded).
>
> Is this intentional?

Looking at the code, it looks intentional.  There are a whole bunch of
these variables that are local to each buffer, so they are probably
intended to allow per-file customisations.

> The workaround I used is to set the variable after the TAGS file is 
> recognized:
>
> (defadvice tags-table-mode (after tags-table-mode-after-commands activate)
>   "do some stuff after tags-table-mode has been run"
>   (setq file-of-tag-function 'tj-etags-file-of-tag))

I think that's probably the right way to do this.

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