[PATCH] D142123: [clang-tidy] Add check to suggest use of #pragma once

[Kyle Edwards via Phabricator via cfe-commits]

KyleFromKitware added a comment.

In D142123#4066706 <https://reviews.llvm.org/D142123#4066706>, @KyleFromKitware wrote:

> The only way to avoid this is if we overhaul the existing `HeaderGuardCheck` and make its naming convention configurable by a configuration option as opposed to having to extend the C++ class to calculate the name.

Actually, this might be realistic. We could add a new registry for header guard styles. So then instead of having separate checks named `llvm-header-guard` and such, we have a single check named `header-guard` which can then select between different header guard styles (`llvm`, `pragma-once`, etc.) Projects could even create their own custom guard styles and register them in this new registry.


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https://reviews.llvm.org/D142123