logging - Emacs: log the time required for typing commands -


i'm emacs novice. i'm in middle of learning basic commands navigation, editing etc.

some key-combinations take me longer complete...they require either more keys pressed or higher degree of finger-position acrobatics :). i'm wondering if knows if there existing emacs plugin that:

  1. recognises when user has begun typing command (e.g. 'c-' or 'm-' something) , records time @ instant, then
  2. waits until user has finished typing command (i.e. point @ command recognised, before command executed) , records time too, then
  3. appends simple logging info configurable file (e.g. writes 'command description', 'keys', 'entry duration') particular occurrence.

why? perhaps it's overkill, save me time in future if able analyse such log file , determine commands have high usage frequency long completion time. such commands bound keys simpler humble fingers reach, example :).

it nice learning exercise me write myself, i'd prefer save time if solution exists.

here, take lisp code:

(global-set-key (kbd "c-t") 'timed-key-seq)  (defvar timed-keys-hash (make-hash-table :test 'equal))  (defun timed-key-seq ()   (interactive)   (let* ((t-beg (current-time))          (key (read-key-sequence "command:"))          (t-end (current-time))          (t-diff (time-subtract t-end t-beg))          (data (gethash key timed-keys-hash)))     (if data         (destructuring-bind (times . time) data           (puthash key (cons (1+ times) (time-add time t-diff))                    timed-keys-hash))       (puthash key (cons 1 t-diff) timed-keys-hash))     (call-interactively (key-binding key))))  (defun anb-report ()   (interactive)   (let (entries)     (maphash (lambda (key data)                (push                 (format "%s:\t%sx = %s ms\n"                      key (car data)                      (format-time-string "%3n" (cdr data)))                 entries))            timed-keys-hash)     (message (apply #'concat entries))))

the disadvantage need bind timed-key-seq something, i'd suggest c-t. , prefix commands c-t. maybe can suggest defadvice make sure function called each time without having prefix it.

use anb-report generate report. show how many times called each combination , how many milliseconds took together.


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