From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Emanuel Berg Newsgroups: gmane.emacs.devel Subject: Re: buffer segments, uniform and automatic (was: Re: [Elisp: 8 out of 10 problems] I think the last one! 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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-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:322757 Archived-At: Consistent Elisp :) See downmost for examples what you can do with it. It supports buff-, para-, sent-, word-, and char- right now but it is easy to add whatever you want. Everything is defined as: (beg end next) ;;; -*- lexical-binding: t -*- ;; ;; this file: ;; https://dataswamp.org/~incal/emacs-init/pos.el ;; ;; ----------------------------------------------------------------------- (require 'cl-lib) (defun pos--wash-str (str) (string-trim (replace-regexp-in-string "%" "%%" (replace-regexp-in-string "[\n[:blank:]]+" " " str)))) ;; ----------------------------------------------------------------------- (defun pos--all-in-f (goto-beg end cur next) (when (cl-every #'functionp (list goto-beg end cur next)) (funcall goto-beg) (let ((end (funcall end)) (res)) (while (< (point) end) (push (funcall cur) res) (funcall next)) (nreverse res)))) (defmacro pos--all-in (seg in) (let ( (goto-beg (intern (format "goto-%s-beg" in))) (end (intern (format "%s-end" in))) (cur (intern (format "%s-cur" seg))) (next (intern (format "%s-next" seg))) ) `(pos--all-in-f (quote ,goto-beg) (quote ,end) (quote ,cur) (quote ,next)))) ;; ----------------------------------------------------------------------- (defmacro pos--def (name spn) (let ((reg (intern (format "%s-reg" name))) (beg (intern (format "%s-beg" name))) (end (intern (format "%s-end" name))) (cur (intern (format "%s-cur" name))) (len (intern (format "%s-len" name))) (bop (intern (format "%s-bop" name))) (eop (intern (format "%s-eop" name))) (goto-beg (intern (format "goto-%s-beg" name))) (goto-end (intern (format "goto-%s-end" name))) (next (intern (format "%s-next" name))) (prev (intern (format "%s-prev" name))) ) `(progn (defun ,reg () (pos--reg ,spn)) (defun ,beg () (pos--beg ,spn)) (defun ,end () (pos--end ,spn)) (defun ,cur () (pos--cur ,spn)) (defun ,len () (pos--len ,spn)) (defun ,bop () (pos--bop ,spn)) (defun ,eop () (pos--eop ,spn)) (defun ,goto-beg () (interactive) (pos--goto-beg ,spn)) (defun ,goto-end () (interactive) (pos--goto-end ,spn)) (when (= 3 (length ,spn)) (defun ,next (&optional n) (interactive "p") (pos--next ,spn n)) (defun ,prev (&optional n) (interactive "p") (pos--prev ,spn n))) ))) (defun pos--reg (spn &optional def) (pcase-let* ((`(,beg ,end ,next) spn)) (if def (list beg end next) (list beg end)))) (defun pos--beg (spn) (car (pos--reg spn))) (defun pos--end (spn) (cadr (pos--reg spn))) (defun pos--cur (spn) (pcase-let* ((`(,beg ,end) (pos--reg spn)) (cur (pos--wash-str (buffer-substring-no-properties beg end)))) cur)) (defun pos--len (spn) (- (pos--end spn) (pos--beg spn))) (defun pos--bop (spn) (= (point) (pos--beg spn))) (defun pos--eop (spn) (= (point) (pos--end spn))) (defun pos--goto-beg (spn) (goto-char (pos--beg spn))) (defun pos--goto-end (spn) (goto-char (pos--end spn))) (defun pos--next (spn &optional n) (or n (setq n 1)) (pcase-let* ((`(,_beg ,_end ,next) (pos--reg spn t))) (when (functionp next) (funcall next n)))) (defun pos--prev (spn &optional n) (or n (setq n 1)) (pcase-let* ((`(,_beg ,_end ,next) (pos--reg spn t))) (when (functionp next) (funcall next (* -1 n))))) ;; ----------------------------------------------------------------------- (defun pos--buff () (list (point-min) (point-max))) (defun pos--para () (save-mark-and-excursion (let ((beg (progn (start-of-paragraph-text) (point))) (end (progn (end-of-paragraph-text) (point)))) (list beg end #'forward-paragraph)))) (defun pos--sent () (save-mark-and-excursion (let ((end (forward-sentence)) (beg (forward-sentence -1))) (list beg end #'forward-sentence)))) (defun pos--word () (save-mark-and-excursion (let ((end (progn (forward-word) (point))) (beg (progn (forward-word -1) (point)))) (list beg end #'forward-word)))) (defun pos--char () (save-mark-and-excursion (let ((beg (point)) (end (progn (forward-char) (point)))) (list beg end #'forward-char)))) ;; ----------------------------------------------------------------------- (when nil (pos--def "buff" (pos--buff)) (pos--def "para" (pos--para)) (pos--def "sent" (pos--sent)) (pos--def "word" (pos--word)) (pos--def "char" (pos--char)) ) (when nil ;; for buff-, para-, sent-, word-, and char- (word-reg) (word-beg) (word-end) (word-cur) (word-len) (word-bop) (word-eop) ;; M-x (goto-word-beg) (goto-word-end) ;; for para-, sent-, word-, char- ;; with C-u M-x and C-u n M-x (word-next) (word-next 5) (word-prev) (word-prev 5) (pos--all-in word sent) ; all combinations ) (provide 'pos) -- underground experts united https://dataswamp.org/~incal