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

[Dmitry Gutov]

On 1/17/18 18:40, Eli Zaretskii wrote:

> > The information is inside the TAGS file, isn't it?
>
> Not really: the signature of each file at the moment of scan is
> missing, and maybe also other things.

Meaning it's not known at etags runtime? That's true.

> > And I think it should be fairly easy (in terms of the algorithm, at
> > least) to implement incremental update for one-to-few files: you scan
> > through the file, remove the corresponding entries, and then scan the
> > files (ones that still exist) and add those entries at the end.
>
> This should be relatively easy.  Is that what you meant by
> "incremental"?

Incremental is the goal, and this is just one approach. Not sure whether 
it will help with 'make tags', like I said.

Maybe if Makefile somehow tracked the file that need to be reindexed? 
Using their mtimes, for instance.

Make tracks which files need to be recompiled, right? This could reuse 
the same mechanism, if possible.