Is this the right mailing list?
The clang-format emacs package asks clang-format to return replacement
rules, which are specified using byte offsets, not character offsets,
and emacs always works with character offsets, not byte offsets.
So if you have some multi-byte utf8 characters in a file, the emacs
function clang-format-region will apply the rules incorrectly because
byte offsets would not be equal to character offsets.
In the function clang-format-region, the input parameters start and
end are char offsets, so they should be converted to byte offsets:
112a122,124
(setq start (position-bytes start)
end (position-bytes end))
and in clang-format--replace, offset and length should be converted to
char offsets, for example, like so:
93a95,101
(defun clang-format--position-from-bytes (offset)
(when offset
(save-excursion
(goto-char offset)
(while (> (position-bytes (point)) offset) (forward-char -1))
(point))))
95,98c103,107
< (goto-char offset)
< (delete-char length)
< (when text
< (insert text)))