[clang] [clang-tools-extra] [clang-tidy] Added new check to detect redundant inline keyword (PR #73069)

[Félix-Antoine Constantin via cfe-commits]

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+.. title:: clang-tidy - readability-redundant-inline-specifier
+
+readability-redundant-inline-specifier
+======================================
+
+Checks for instances of the ``inline`` keyword in code where it is redundant
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felix642 wrote:

Right, I was looking at the wrong file hence why I was confused.

https://github.com/llvm/llvm-project/pull/73069