[clangd-dev] Disabling automatic insertion of include

[Ilya Biryukov via clangd-dev]

We actually have something very similar implemented in the code
("clangd/CanonicalIncludes.h"), but we don't support the IWYU mapping file
format.
I'm not sure how much work implementing that is, though.

On Wed, Apr 10, 2019 at 11:28 PM Simon Marchi via clangd-dev <
clangd-dev at lists.llvm.org> wrote:

> On 2019-04-10 4:23 a.m., Ilya Biryukov wrote:
> > FWIW, having a mapping for libraries like glib seems useful even if they
> do get patched to add IWYU pragmas.
> > There always a rather large amount of older versions floating around...
> >
> > Sam McCall via clangd-dev <clangd-dev at lists.llvm.org <mailto:
> clangd-dev at lists.llvm.org>> schrieb am Mi., 10. Apr. 2019, 09:22:
> >
> >     I'm a little hesitant to mention this, as it's a bit of a pandora's
> box, but...
> >     If it's hard to get prominent libraries like glib patched, we could
> have a lookup table, and pretend we saw such directives...
>
> IWYU seems to support the equivalent of pragmas, but specified outside the
> headers,
> and calls that "Mappings":
>
>
> https://github.com/include-what-you-use/include-what-you-use/blob/master/docs/IWYUMappings.md
>
> It would probably be possible to write such a mapping file for a specific
> version of the glib
> library.  Then, it would be a matter of making clangd read and respect
> those, like it would
> respect the pragmas.  But it would be the user's responsibility to
> configure that properly.
>
> As sugar on top, clangd could always ship with some built-in IWYU mapping
> files contributed
> by the community (is there a repository of such files for various
> libraries somewhere?).  I
> am not sure though how it would identify that a certain library is in use
> (and which version)
> to load the appropriate mapping file.
>
> Simon
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-- 
Regards,
Ilya Biryukov
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