Git seems to be able to compute new/modified/dropped with quite tolerable
efficiency even fir large projects. Are there lessons to be learned there?

/john

On Feb 7, 2018 3:47 AM, "Dmitry Gutov" <dgutov@yandex.ru> wrote:

> On 2/7/18 06:26, Eli Zaretskii wrote:
>
> It would be nice to keep the index up-to-date automatically during all
>>> that. Many users would expect that, I think.
>>>
>>
>> Then I guess we should ask "etags -u" to do that automatically,
>> i.e. for every file name it finds in TAGS to check whether that file
>> exists, and if not, remove all its tags from the file.
>>
>
> Maybe with a new option (e.g. 'etags -u --prune'), because it'll likely
> take some time. I wonder how much the overhead is going to be.
>
>