Re: Generation of tags for the current project on the fly

[Dmitry Gutov]

Hi Tom,

On 1/18/18 01:02, Tom Tromey wrote:

> A while ago I wrote to this list about some work I'd done in etags.
> This was one of the features -- that is, I made "etags -u" work in etags
> mode, not just ctags mode.

ctags supports incremental updates?

> The overall thrust of the project was to combine the use of a config
> file in the source tree with auto-updating.  The former I considered
> necessary to (1) avoid dealing with Makefiles and whatnot (and, building
> tags in the source tree is much nicer when doing out-of-tree builds...),
> and (2) make it so that Emacs could run "etags -u" on save without
> needing to teach it about the correct command line arguments -- they are
> in the config file (ages ago I did this same project but stored the
> command line arguments in the TAGS file; but this patch was never
> accepted).

The config file duplicates some info in .gitignore and 
project-vc-ignores, though. Which is unfortunate.

I also doubt that 'make tags' will go away anytime soon.

Any chance your code supports something analogous to 'global 
--single-update' (except with multiple file arguments, hopefully)? 
That's what I've been trying to describe.

> I suppose I could push my branch to git if that would be convenient.
> Just let me know.

I'm sure it would be helpful, even if only to study the approach.