52 lines
2.7 KiB
EmacsLisp
52 lines
2.7 KiB
EmacsLisp
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(if (equal (cons 1 1)
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(ignore-errors
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(subr-arity (symbol-function 'execute-extended-command))))
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(progn (message "Patching execute-extended-command")
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(defun execute-extended-command (prefixarg &optional command-name)
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;; Based on Fexecute_extended_command in keyboard.c of Emacs.
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;; Aaron S. Hawley <aaron.s.hawley(at)gmail.com> 2009-08-24
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"Read a command name, then read the arguments and call the command.
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Interactively, to pass a prefix argument to the command you are
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invoking, give a prefix argument to `execute-extended-command'.
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Noninteractively, the argument PREFIXARG is the prefix argument to
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give to the command you invoke."
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(interactive (list current-prefix-arg (read-extended-command)))
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;; Emacs<24 calling-convention was with a single `prefixarg' argument.
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(if (null command-name)
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(setq command-name (let ((current-prefix-arg prefixarg)) ; for prompt
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(read-extended-command))))
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(let* ((function (and (stringp command-name) (intern-soft command-name)))
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(binding (and suggest-key-bindings
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(not executing-kbd-macro)
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(where-is-internal function overriding-local-map t))))
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(unless (commandp function)
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(error "`%s' is not a valid command name" command-name))
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(setq this-command function)
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;; Normally `real-this-command' should never be changed, but here we really
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;; want to pretend that M-x <cmd> RET is nothing more than a "key
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;; binding" for <cmd>, so the command the user really wanted to run is
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;; `function' and not `execute-extended-command'. The difference is
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;; visible in cases such as M-x <cmd> RET and then C-x z (bug#11506).
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(setq real-this-command function)
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(let ((prefix-arg prefixarg))
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(command-execute function 'record))
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;; If enabled, show which key runs this command.
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(when binding
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;; But first wait, and skip the message if there is input.
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(let* ((waited
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;; If this command displayed something in the echo area;
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;; wait a few seconds, then display our suggestion message.
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(sit-for (cond
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((zerop (length (current-message))) 0)
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((numberp suggest-key-bindings) suggest-key-bindings)
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(t 2)))))
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(when (and waited (not (consp unread-command-events)))
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(with-temp-message
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(format "You can run the command `%s' with %s"
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function (key-description binding))
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(sit-for (if (numberp suggest-key-bindings)
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suggest-key-bindings
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2))))))))) (message "Not patching execute-extended-command"))
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(provide 'patches)
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