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Jean: buc.el ready (actually, now when I understand it again, it isn't a
From: |
Emanuel Berg |
Subject: |
Jean: buc.el ready (actually, now when I understand it again, it isn't a bad idea at all!) |
Date: |
Tue, 08 Jun 2021 10:12:04 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Jean, or anyone else, take a look. Is the pack ready? [code
also yanked last in mail]
https://dataswamp.org/~incal/emacs-init/buc.el
I went thru it and it is actually a very good an simple idea,
I don't know why I suddenly didn't understand it's purpose and
thought it complicated...
I'm unsure tho if the documentation probably doesn't make
anything clearer to a lot of people, right?
Perhaps should add an example run...
What do you think?
Is it OK now as an Elisp package?
;;; buc.el --- move between buffers based on category -*- lexical-binding: t
;;;
;;; Commentary:
;;;
;;; Author: Emanuel Berg (incal) <moasenwood@zoho.eu>
;;; Created: 2021-05-23
;;; Keywords: docs, files
;;; License: GPL3+
;;; Package-Requires: ((cl-lib "1.0"))
;;; URL: https://dataswamp.org/~incal/emacs-init/buc.el
;;; Version: 2.0.0
;;;
;;; Move between similar buffers. So far I have only found one
;;; use case for this, namely accessing man pages. Try
;;; `man-buc' below.
;;;
;;; The general idea behind the interface is to present
;;; alternatives based on your recent answers to the same
;;; questions. The alternatives are sorted to present you with
;;; the most relevant one first. You pick an alternative by
;;; hitting a single key. If your desired choice isn't among
;;; the alternatives, start typing, that will bypass the
;;; interface and the default interface will be used as
;;; a fallback. (But technically it isn't a fallback, rather
;;; the interfaces are cooperating covering different parts of
;;; one problem, and buc was programmed with this situation
;;; in mind.)
;;;
;;; If you'd count the number of keypresses you'd see the
;;; advantage with this package. When the buc interface is
;;; used, the count is much lower; when it isn't used, the
;;; count still isn't higher than what you'd use anyway.
;;; Again, try `man-buc' to see how it works first hand.
;;;
;;; Or take a look at this screenshot:
;;;
;;; https://dataswamp.org/~incal/dumps/buc.png
;;;
;;; The principle behind the interface is similar to that of
;;; a computer hardware cache: proximity in space and time,
;;; with updates on every single access.
;;;
;;; The interface is an hybrid between the GUI and CLI style,
;;; the GUI "icons" here being words! Some say icons are more
;;; intuitive. That's were we agree to disagree, that perhaps
;;; holds for infants (and illiterates) but not to adults
;;; who've literally spent a substantial part of their life
;;; reading and writing. Because we believe intuition is an
;;; acquired skill just like everything else.
;;;
;;; Code:
(require 'cl-lib)
(defun buffer-names ()
"Get the names of all open buffers, as strings."
(mapcar #'buffer-name (buffer-list)) )
(defvar nav-keys nil "The keys used to select buffers.")
(defvar nav-keys-str nil "Descriptions of the buffer-select keys.")
(setq nav-keys '(?\r ?\s ?\t ?\d ?\C-j ?\C-k ?\C-l ?\C-u ?\C-o ?\C-p))
(setq nav-keys-str (split-string (key-description nav-keys)))
(defun extract-strings (strings match)
"From STRINGS, get a list with the parts that MATCH."
(remove nil
(mapcar
(lambda (s) (when (string-match match s) (match-string 1 s)))
strings) ))
(defun get-ps (names)
"Make the prompt-string, with NAMES."
(let ((k -1)
(s " [") )
(dolist (e names (concat s "] "))
(setq s (format "%s %s:%s "
s (nth (cl-incf k) nav-keys-str) e) ))))
(defun navigate-buffer-category (prefix &optional bad-key &rest args)
"Display all buffers that start with PREFIX.
If none of the offered buffers are chosen by the user's keystroke,
evaluate (BAD-KEY ARGS)."
(let ((pages (extract-strings
(buffer-names)
(format "%s%s" prefix "\\(.*\\)\\*") )))
(if pages
(let*((ps (get-ps pages))
(key (read-key ps))
(page-index (cl-position key nav-keys))
(page (when page-index (nth page-index pages))) )
(if (= key 7) (message "quit")
(if page (switch-to-buffer (format "%s%s*" prefix page))
(when bad-key (apply bad-key `(,@args ,key))) )))
(if bad-key (apply bad-key args)
(error "Empty category and no fallback function") ))))
(defun switch-to-type (ps fun &optional key)
"Ask for a string with the prompt-string PS.
Use the string as input to FUN.
If KEY, it'll be the first KEY of the string, auto-inserted."
(apply fun
`(,(read-string ps (when key (char-to-string key)) nil)) ))
(defun man-buc ()
"Show man pages. If you type, you get the common prompt."
(interactive)
(navigate-buffer-category "*Man "
#'switch-to-type
"[buc] man page: "
'man) )
(provide 'buc)
;;; buc.el ends here
--
underground experts united
https://dataswamp.org/~incal
- Jean: buc.el ready (actually, now when I understand it again, it isn't a bad idea at all!),
Emanuel Berg <=