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I don't know the name of the command C-<number> <entry> to repeat the <entry>, <number> times.

For me it is more annoying than useful, several times I have accidentally introduced 88888 times an asterisk, because my finger hits the Ctrl key instead of the Shift.

Is there a way to disable this repetition command unless I directly type C-u <number> <entry>?

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The command you are looking for is digit-argument. It is bound to C-9, C-8, C-7, C-6, C-5, C-4, C-3, C-2, C-1, C-0, ESC 0..9, C-M-9, C-M-8, C-M-7, C-M-6, C-M-5, C-M-4, C-M-3, C-M-2, C-M-1, and C-M-0.

I don't recommend that you remove such bindings. But if you want to you can remove each like this:

(global-set-key (kbd "C-0") nil)
(global-set-key (kbd "C-1") nil)

etc.

  • thanks, why don't you recommend it? – onlycparra Nov 19 '18 at 3:21
  • Many Emacs commands make use of numeric arguments, either to repeat an action (e.g. C-5 C-n to move down five lines) or to alter the default behavior of the command in some way. They are used frequently enough that you'll notice the default key bindings let you enter a numeric argument with any combination of C- and M- modifiers -- that way whatever key binding you're about to hit can be provided an argument without changing modifiers. – glucas Nov 19 '18 at 4:30
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    Note that the numeric argument doesn't always mean 'repeat'. For example, C-2 C-y will yank the second-to-last kill. M-2 M-s o will show lines matching a pattern (occur) but with two lines of context around each match. Some commands have special behavior for 0 or 1 as an argument... Anyway, the point some Emacs users rely heavily on numeric arguments! – glucas Nov 19 '18 at 4:50
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    I don't recommend it because I don't recommend messing with prefix-arg key bindings. No special reason, though. If such keys get in your way, go for it. – Drew Nov 19 '18 at 4:52

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