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

[Dmitry Gutov]

On 2/5/18 20:06, Eli Zaretskii wrote:
> > Cc: Eli Zaretskii <address@hidden>, address@hidden
> > From: Dmitry Gutov <address@hidden>
> > Date: Mon, 5 Feb 2018 02:40:59 +0300
> >
> > I wonder if 'make tags' would be able to make use of it somehow. If not,
> > I'll probably have to reimplement it in Elisp anyway. Eli, any thoughts?
>
> Not sure I understand the question.  Are you asking if "make TAGS"
> could run "etags -u"?  I think it could, but we'd need some Make
> wizardry to generate a list of files modified after TAGS was last
> written.  Currently, we just generate a list of all the relevant
> source files.

For modified files, it could check modification times, similarly to how 
it can recompile only files it needs to. I think.

But I'm asking if you have any idea for how to deal with _deleted_ 
files? I.e. files that have been deleted since 'make tags' was last run.