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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:264107 Archived-At: On Fri, 5 Feb 2021 at 17:06, Robert Pluim wrote: > what's the rationale for the capital letter after C-x rule? It=CA=BCs not > like I=CA=BCm likely to type a capital by mistake (and eg edebug already > doesn=CA=BCt follow this rule, since it binds 'C-x X ' commands). A practical reason could be Caps Lock. When it=E2=80=99s on, Ctrl+X still produces C-x, but the following letter key produces a capital character. Having C-x X different from C-x x would introduce a modal error where all bindings suddenly change depending on Caps Lock. (This is another manifestation of the wrongness of binding sequences of _characters_ rather than _keys_. But that=E2=80=99s what we are stuck wi= th because of backward compatibility with terminals and terminal emulators.)