[clang] [emacs][clang-format] Add elisp API for clang-format on git diffs (PR #112792)

[Campbell Barton via cfe-commits]

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@@ -216,17 +327,72 @@ uses the function `buffer-file-name'."
             (if incomplete-format
                 (message "(clang-format: incomplete (syntax errors)%s)" stderr)
               (message "(clang-format: success%s)" stderr))))
-      (delete-file temp-file)
+      (ignore-errors (delete-file temp-file))
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ideasman42 wrote:

suggest with-demoted-errors here too, could be a function as it's used elsewhere.

https://github.com/llvm/llvm-project/pull/112792