Hi Bram,
On Thursday, July 7, 2016 at 10:24:49 PM UTC+3, Bram Moolenaar wrote:
> There has been a request that when adding items to the quickfix list, no
> buffer is created to hold the file name.
>
> The reason is that when there are many different file names this causes
> the buffer list to get very long, which then causes various operations
> to become slow. Including finding the buffer for a file name.
>
> Instead of using a buffer, where the file name is stored, and then using
> the buffer number, the file name itself could be remembered.
>
> Since there are so many quickfix commands, adding a flag to every one of
> them would be creating quite a mess. We could add an option, but
> that has the danger of forgetting to reset the option after the
> operation. And it requires three more statements (save current value,
> set the option, restore th option). So I was thinking of using a command
> modifier:
>
> :usefname caddexpr {expr}
>
> How about that?
>
Sounds good. Maybe we could also have an option only for search commands like
:grep since this mode is most useful there? (Actually, this was one of the
reasons which convinced me that quickfix is not the right tool to use for
searches. See https://github.com/ramele/agrep).
>
> Storing the file name instead of a buffer number has a few
> disadvantages:
> - When inserting or deleting lines in the file the position of the
> quickfix items is not adjusted.
> - Using more memory to store a copy of the file name.
> - Changing directory can make the file name invalid. We could store the
> full path, but creating that also adds overhead. Hmm, perhaps we
> could store the full path the moment the directory is changed.
Can't we just save the original working directory used when the quickfix list
was created and use it when jumping to files stored with a relative path?
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