/usr/share/emacs/site-lisp/haskell-mode/haskell-move-nested.el is in haskell-mode 13.14.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | ;;; haskell-move-nested.el --- Change the column of text nested below a line
;; Copyright (C) 2010 Chris Done
;; Author: Chris Done <chrisdone@gmail.com>
;; This file is not part of GNU Emacs.
;; This program is free software: you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;; published by the Free Software Foundation, either version 3 of
;; the License, or (at your option) any later version.
;; This program is distributed in the hope that it will be
;; useful, but WITHOUT ANY WARRANTY; without even the implied
;; warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
;; PURPOSE. See the GNU General Public License for more details.
;; You should have received a copy of the GNU General Public
;; License along with this program. If not, see
;; <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This module is intended for Haskell mode users, but is
;; independent of Haskell mode.
;; Example usage:
;; (define-key haskell-mode-map (kbd "C-,") 'haskell-move-nested-left)
;; (define-key haskell-mode-map (kbd "C-.") 'haskell-move-nested-right)
;;; Code:
;;;###autoload
(defun haskell-move-nested (cols)
"Shift the nested off-side-rule block adjacent to point by COLS columns to the right.
In Transient Mark mode, if the mark is active, operate on the contents
of the region instead.
"
(save-excursion
(if (and transient-mark-mode mark-active)
(progn
(indent-rigidly (region-beginning) (region-end) cols)
(setq deactivate-mark nil))
(let ((region (haskell-move-nested-region)))
(when region
(indent-rigidly (car region) (cdr region) cols))))))
;;;###autoload
(defun haskell-move-nested-right (cols)
"Increase indentation of the following off-side-rule block adjacent to point.
Use a numeric prefix argument to indicate amount of indentation to apply.
In Transient Mark mode, if the mark is active, operate on the contents
of the region instead."
(interactive "p")
(haskell-move-nested cols)
)
;;;###autoload
(defun haskell-move-nested-left (cols)
"Decrease indentation of the following off-side-rule block adjacent to point.
Use a numeric prefix argument to indicate amount of indentation to apply.
In Transient Mark mode, if the mark is active, operate on the contents
of the region instead."
(interactive "p")
(haskell-move-nested (- cols))
)
(defun haskell-move-nested-region ()
"Infer region off-side-rule block adjacent to point.
Used by `haskell-move-nested'.
"
(save-excursion
(let ((starting-level (current-column)))
(forward-line)
(let ((current-level (haskell-move-nested-indent-level)))
(let ((start-point (line-beginning-position))
(start-end-point (line-end-position))
(end-point nil)
(last-line 0))
(forward-line)
(while (and (not (= (line-beginning-position) last-line))
(or (> (haskell-move-nested-indent-level) starting-level)
(and (> current-level starting-level)
(>= (haskell-move-nested-indent-level) current-level))))
(setq last-line (line-beginning-position))
(setq end-point (line-end-position))
(forward-line))
(cons start-point (or end-point
start-end-point)))))))
(defun haskell-move-nested-indent-level ()
(max
0
(1- (length
(buffer-substring-no-properties
(line-beginning-position)
(or (save-excursion (goto-char (line-beginning-position))
(search-forward-regexp "[^ ]" (line-end-position) t 1))
(line-beginning-position)))))))
(defun haskell-kill-nested ()
"Kill the nested region after point."
(interactive)
(let ((start (point))
(reg (save-excursion
(search-backward-regexp "^[ ]+" (line-beginning-position) t 1)
(search-forward-regexp "[^ ]" (line-end-position) t 1)
(haskell-move-nested-region))))
(kill-region start (cdr reg))))
(defun haskell-delete-nested ()
"Kill the nested region after point."
(interactive)
(let ((start (point))
(reg (save-excursion
(search-backward-regexp "^[ ]+" (line-beginning-position) t 1)
(search-forward-regexp "[^ ]" (line-end-position) t 1)
(haskell-move-nested-region))))
(delete-region start (cdr reg))))
(provide 'haskell-move-nested)
;;; haskell-move-nested.el ends here
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