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<div>Can we at least make it less aggressive? I'm working on a GTK app and it keeps inserting includes when I already have the symbols available to me through a different one. Or is that the intent?</div>
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<div>Doug.</div>
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<div>On Thu, 2019-04-11 at 10:48 +0200, Ilya Biryukov via clangd-dev wrote:</div>
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<div dir="ltr">We actually have something very similar implemented in the code ("clangd/CanonicalIncludes.h"), but we don't support the IWYU mapping file format.</div>
<div>I'm not sure how much work implementing that is, though.</div>
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<div dir="ltr" class="gmail_attr">On Wed, Apr 10, 2019 at 11:28 PM Simon Marchi via clangd-dev <<a href="mailto:clangd-dev@lists.llvm.org">clangd-dev@lists.llvm.org</a>> wrote:<br>
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On 2019-04-10 4:23 a.m., Ilya Biryukov wrote:<br>
> FWIW, having a mapping for libraries like glib seems useful even if they do get patched to add IWYU pragmas.<br>
> There always a rather large amount of older versions floating around...<br>
> <br>
> Sam McCall via clangd-dev <<a href="mailto:clangd-dev@lists.llvm.org" target="_blank">clangd-dev@lists.llvm.org</a> <mailto:<a href="mailto:clangd-dev@lists.llvm.org" target="_blank">clangd-dev@lists.llvm.org</a>>> schrieb am Mi., 10. Apr. 2019, 09:22:<br>
> <br>
> I'm a little hesitant to mention this, as it's a bit of a pandora's box, but...<br>
> If it's hard to get prominent libraries like glib patched, we could have a lookup table, and pretend we saw such directives...<br>
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IWYU seems to support the equivalent of pragmas, but specified outside the headers,<br>
and calls that "Mappings":<br>
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<a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_include-2Dwhat-2Dyou-2Duse_include-2Dwhat-2Dyou-2Duse_blob_master_docs_IWYUMappings.md&d=DwMFaQ&c=yzoHOc_ZK-sxl-kfGNSEvlJYanssXN3q-lhj0sp26wE&r=NrrbvTHWa2Nbp_kAN0Hl1o3lM1WAwSes64uBjxjNhMc&m=dwoj2SW-idMT8zcfeT5cAlFYZloA-cX-fETqsyUlHag&s=ks0BVfX9t7mFxAD-XnagWKmFq8yQYXobR5EFeI69Gj4&e=" rel="noreferrer" target="_blank">https://github.com/include-what-you-use/include-what-you-use/blob/master/docs/IWYUMappings.md</a><br>
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It would probably be possible to write such a mapping file for a specific version of the glib<br>
library. Then, it would be a matter of making clangd read and respect those, like it would<br>
respect the pragmas. But it would be the user's responsibility to configure that properly.<br>
<br>
As sugar on top, clangd could always ship with some built-in IWYU mapping files contributed<br>
by the community (is there a repository of such files for various libraries somewhere?). I<br>
am not sure though how it would identify that a certain library is in use (and which version)<br>
to load the appropriate mapping file.<br>
<br>
Simon<br>
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