From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Yuri Khan Newsgroups: gmane.emacs.devel Subject: Re: Can watermarking Unicode text using invisible differences sneak through Emacs, or can Emacs detect it? 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List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:285853 Archived-At: On Fri, 4 Feb 2022 at 10:53, Richard Stallman wrote: > C-x 8 RET recognizes > LATIN SMALL LETTER A WITH BREVE AND TILDE > but it does not recognize > LATIN SMALL LETTER A WITH TILDE AND BREVE > > Is the failure to handle the latter a bug? Not necessarily. Unicode does not assign single-character codes to all possible letter and diacritic combinations. Instead, it has various combining diacritics that apply to the nearest preceding non-combining character. So a with tilde and breve could be encoded as a sequence or .