In GNU Emacs, is there a good way to change the comment-region command in C mode from

/* This is a comment which extends  */
/* over more than one line in C. */

to

/* This is a comment which extends
   over more than one line in C. */

? I have tried

(setq comment-multi-line t)

but this does not help. There is a section on multi-line comments in the Emacs manual, but it does not mention anything.

c emacs elisp c-mode
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