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comparison emacs/hist.el @ 0:509549c55989
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| author | Henry S. Thompson <ht@inf.ed.ac.uk> |
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| date | Tue, 25 May 2021 13:57:42 -0400 |
| parents | |
| children |
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| -1:000000000000 | 0:509549c55989 |
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| 1 ;;; a tcsh-type history key facility for sub-shells | |
| 2 ;; Last edited: Wed Nov 14 09:52:12 1990 | |
| 3 | |
| 4 (provide 'hist) | |
| 5 (require 'prompt-for-word) | |
| 6 | |
| 7 (defvar hk-last-mb nil "*begin of last hk match") | |
| 8 | |
| 9 (defvar hk-last-mark nil "*beginning of last hk insertion") | |
| 10 | |
| 11 (defvar hk-search-pat nil "*regexp for hk search") | |
| 12 | |
| 13 (defvar hk-last-point 0 "*end of last hk insertion") | |
| 14 | |
| 15 (defvar hkr-last-point 0 "*end of last hk pattern search insertion") | |
| 16 | |
| 17 (defvar hkr-search-pat nil "*regexp for hk user pattern search") | |
| 18 | |
| 19 (defvar hk-last-user-pat nil "*user part of last pattern search") | |
| 20 | |
| 21 (make-local-variable 'hk-last-mb) | |
| 22 (make-local-variable 'hk-last-mark) | |
| 23 (make-local-variable 'hk-last-point) | |
| 24 (make-local-variable 'hk-search-pat) | |
| 25 (make-local-variable 'hkr-search-pat) | |
| 26 (make-local-variable 'hkr-last-point) | |
| 27 (make-local-variable 'hk-last-user-pat) | |
| 28 | |
| 29 (defvar hk-pat-table '(("*shell*" . ".*: ") | |
| 30 ("*prolog*" . "| \\?- ") | |
| 31 ("*lisp*" . ">") | |
| 32 ("*inferior-lisp*" . ">")) | |
| 33 "default crux of prompt pattern, by buffer name") | |
| 34 | |
| 35 (defun hist-key (&optional rpt) | |
| 36 "offer a previous input, a la tcsh ^P" | |
| 37 (interactive "p") | |
| 38 (if (not rpt) (setq rpt 1)) | |
| 39 (let ((here (point)) | |
| 40 (pat (or hk-search-pat | |
| 41 (setq hk-search-pat | |
| 42 (concat "^" (or (cdr (assoc (buffer-name | |
| 43 (current-buffer)) | |
| 44 hk-pat-table)) | |
| 45 "") | |
| 46 "\\(.+\\)$"))))) | |
| 47 (hk-find-b rpt here pat))) | |
| 48 | |
| 49 (defun hk-find-b (rpt here pat) | |
| 50 "search backwards for pat, no dups, rpt times" | |
| 51 (while (> rpt 0) | |
| 52 (goto-char (if (= (point) hk-last-point) | |
| 53 hk-last-mb | |
| 54 (if (eobp) | |
| 55 (progn (beginning-of-line) | |
| 56 (setq hk-last-mark nil) | |
| 57 (point)) | |
| 58 (error "nowhere??")))) | |
| 59 (let ((keep-trying t)) | |
| 60 (while keep-trying | |
| 61 (if (re-search-backward pat nil t) | |
| 62 (let ((entry (buffer-substring (match-beginning 1) | |
| 63 (match-end 1)))) | |
| 64 (setq hk-last-mb (match-beginning 0)) | |
| 65 (goto-char (or hk-last-mark here)) | |
| 66 (if (looking-at (regexp-quote entry)) | |
| 67 (goto-char hk-last-mb) | |
| 68 (setq keep-trying nil) | |
| 69 (if hk-last-mark (delete-region hk-last-mark hk-last-point)) | |
| 70 (setq hk-last-mark (point)) | |
| 71 (push-mark (point) t) | |
| 72 (insert entry) | |
| 73 (setq hk-last-point (point)))) | |
| 74 (unwind-protect (error "no more??") | |
| 75 (goto-char (if hk-last-mark | |
| 76 hk-last-point | |
| 77 here)))))) | |
| 78 (setq rpt (1- rpt)))) | |
| 79 | |
| 80 (defun hist-key-back (&optional rpt) | |
| 81 "offer a previous input, a la tcsh ^N" | |
| 82 (interactive "p") | |
| 83 (if (not rpt) (setq rpt 1)) | |
| 84 (let ((here (point)) | |
| 85 (pat (or hk-search-pat | |
| 86 (error "no pattern")))) | |
| 87 (while (> rpt 0) | |
| 88 (goto-char (if (= (point) hk-last-point) | |
| 89 hk-last-mb | |
| 90 (error "lost context"))) | |
| 91 (let ((keep-trying t)) | |
| 92 (while keep-trying | |
| 93 (end-of-line) | |
| 94 (if (re-search-forward pat nil t) | |
| 95 (let ((entry (buffer-substring (match-beginning 1) | |
| 96 (match-end 1)))) | |
| 97 (setq hk-last-mb (match-beginning 0)) | |
| 98 (goto-char (or hk-last-mark here)) | |
| 99 (if (looking-at (regexp-quote entry)) | |
| 100 ;; allow for back to square one | |
| 101 (if (progn (end-of-line) | |
| 102 (eobp)) | |
| 103 (progn (setq keep-trying nil) | |
| 104 (if hk-last-mark | |
| 105 (delete-region hk-last-mark hk-last-point) | |
| 106 (error "shouldnt")) | |
| 107 (goto-char hk-last-mark)) | |
| 108 (goto-char hk-last-mb)) | |
| 109 (setq keep-trying nil) | |
| 110 (if hk-last-mark (delete-region hk-last-mark hk-last-point)) | |
| 111 (setq hk-last-mark (point)) | |
| 112 (push-mark (point) t) | |
| 113 (insert entry) | |
| 114 (setq hk-last-point (point)))) | |
| 115 (unwind-protect (error "no more??") | |
| 116 (goto-char (if hk-last-mark | |
| 117 hk-last-point | |
| 118 here)))))) | |
| 119 (setq rpt (1- rpt))))) | |
| 120 | |
| 121 (defun hist-key-search (&optional rpt pat) | |
| 122 "offer a previous input, searching backwards for a pattern" | |
| 123 (interactive "p") | |
| 124 (if (not rpt) (setq rpt 1)) | |
| 125 (let ((here (point)) | |
| 126 (full-pat | |
| 127 (if (= (point) hkr-last-point) | |
| 128 hkr-search-pat | |
| 129 (setq hkr-search-pat | |
| 130 (if (eobp) | |
| 131 (concat "^" | |
| 132 (or (cdr (assoc (buffer-name | |
| 133 (current-buffer)) | |
| 134 hk-pat-table)) | |
| 135 "") | |
| 136 "\\(.*" | |
| 137 (setq hk-last-user-pat | |
| 138 (or pat | |
| 139 (regexp-quote | |
| 140 (prompt-for-word | |
| 141 "Pattern: " | |
| 142 (or hk-last-user-pat "") | |
| 143 nil nil)))) | |
| 144 ".*\\)$") | |
| 145 (error "nowhere??")))))) | |
| 146 (hk-find-b rpt here full-pat) | |
| 147 (setq hkr-last-point hk-last-point))) | |
| 148 | |
| 149 (require 'shell) | |
| 150 | |
| 151 (define-key shell-mode-map "\ep" 'hist-key) | |
| 152 (define-key shell-mode-map "\en" 'hist-key-back) | |
| 153 (define-key shell-mode-map "\es" 'hist-key-search) | |
| 154 (define-key shell-mode-map "\e\C-i" 'shell-expand-file-name) | |
| 155 | |
| 156 ;;; hack in case we've been given com-int | |
| 157 (if (not (boundp 'inferior-lisp-mode-map)) | |
| 158 (require 'inf-lisp)) | |
| 159 (define-key inferior-lisp-mode-map "\ep" 'hist-key) | |
| 160 (define-key inferior-lisp-mode-map "\en" 'hist-key-back) | |
| 161 ;; note that prolog copies shell-mode-map, so no need to fix that |