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diff --git a/configs/shared/emacs/.emacs.d/elpa/paredit-20171127.205/paredit.el b/configs/shared/emacs/.emacs.d/elpa/paredit-20171127.205/paredit.el deleted file mode 100644 index b806866608..0000000000 --- a/configs/shared/emacs/.emacs.d/elpa/paredit-20171127.205/paredit.el +++ /dev/null @@ -1,2929 +0,0 @@ -;;; paredit.el --- minor mode for editing parentheses -*- Mode: Emacs-Lisp -*- - -;; Copyright (C) 2005--2017 Taylor R. Campbell - -;; Author: Taylor R. Campbell <campbell+paredit@mumble.net> -;; Version: 25beta -;; Package-Version: 20171127.205 -;; Created: 2005-07-31 -;; Keywords: lisp - -;; NOTE: THIS IS A BETA VERSION OF PAREDIT. USE AT YOUR OWN RISK. -;; THIS FILE IS SUBJECT TO CHANGE, AND NOT SUITABLE FOR DISTRIBUTION -;; BY PACKAGE MANAGERS SUCH AS APT, PKGSRC, MACPORTS, &C. - -;; Paredit 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. -;; -;; Paredit 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 paredit. If not, see <http://www.gnu.org/licenses/>. - -;;; The currently released version of paredit is available at -;;; <https://mumble.net/~campbell/emacs/paredit.el>. -;;; -;;; The latest beta version of paredit is available at -;;; <https://mumble.net/~campbell/emacs/paredit-beta.el>. -;;; -;;; The Git repository for paredit is available at -;;; <https://mumble.net/~campbell/git/paredit.git> -;;; -;;; Release notes are available at -;;; <https://mumble.net/~campbell/emacs/paredit.release>. - -;;; Install paredit by placing `paredit.el' in `/path/to/elisp', a -;;; directory of your choice, and adding to your .emacs file: -;;; -;;; (add-to-list 'load-path "/path/to/elisp") -;;; (autoload 'enable-paredit-mode "paredit" -;;; "Turn on pseudo-structural editing of Lisp code." -;;; t) -;;; -;;; Start Paredit Mode on the fly with `M-x enable-paredit-mode RET', -;;; or always enable it in a major mode `M' (e.g., `lisp') with: -;;; -;;; (add-hook 'M-mode-hook 'enable-paredit-mode) -;;; -;;; Customize paredit using `eval-after-load': -;;; -;;; (eval-after-load 'paredit -;;; '(progn -;;; (define-key paredit-mode-map (kbd "ESC M-A-C-s-)") -;;; 'paredit-dwim))) -;;; -;;; Send questions, bug reports, comments, feature suggestions, &c., -;;; via email to the author's surname at mumble.net. -;;; -;;; Paredit should run in GNU Emacs 21 or later and XEmacs 21.5.28 or -;;; later. - -;;; The paredit minor mode, Paredit Mode, binds common character keys, -;;; such as `(', `)', `"', and `\', to commands that carefully insert -;;; S-expression structures in the buffer: -;;; -;;; ( inserts `()', leaving the point in the middle; -;;; ) moves the point over the next closing delimiter; -;;; " inserts `""' if outside a string, or inserts an escaped -;;; double-quote if in the middle of a string, or moves over the -;;; closing double-quote if at the end of a string; and -;;; \ prompts for the character to escape, to avoid inserting lone -;;; backslashes that may break structure. -;;; -;;; In comments, these keys insert themselves. If necessary, you can -;;; insert these characters literally outside comments by pressing -;;; `C-q' before these keys, in case a mistake has broken the -;;; structure. -;;; -;;; These key bindings are designed so that when typing new code in -;;; Paredit Mode, you can generally type exactly the same sequence of -;;; keys you would have typed without Paredit Mode. -;;; -;;; Paredit Mode also binds common editing keys, such as `DEL', `C-d', -;;; and `C-k', to commands that respect S-expression structures in the -;;; buffer: -;;; -;;; DEL deletes the previous character, unless it is a delimiter: DEL -;;; will move the point backward over a closing delimiter, and -;;; will delete a delimiter pair together if between an open and -;;; closing delimiter; -;;; -;;; C-d deletes the next character in much the same manner; and -;;; -;;; C-k kills all S-expressions that begin anywhere between the point -;;; and the end of the line or the closing delimiter of the -;;; enclosing list, whichever is first. -;;; -;;; If necessary, you can delete a character, kill a line, &c., -;;; irrespective of S-expression structure, by pressing `C-u' before -;;; these keys, in case a mistake has broken the structure. -;;; -;;; Finally, Paredit Mode binds some keys to complex S-expression -;;; editing operations. For example, `C-<right>' makes the enclosing -;;; list slurp up an S-expression to its right (here `|' denotes the -;;; point): -;;; -;;; (foo (bar | baz) quux) C-<right> (foo (bar | baz quux)) -;;; -;;; Some paredit commands automatically reindent code. When they do, -;;; they try to indent as locally as possible, to avoid interfering -;;; with any indentation you might have manually written. Only the -;;; advanced S-expression manipulation commands automatically reindent, -;;; and only the forms that they immediately operated upon (and their -;;; subforms). -;;; -;;; This code is written for clarity, not efficiency. It frequently -;;; walks over S-expressions redundantly. If you have problems with -;;; the time it takes to execute some of the commands, let me know. - -;;; This assumes Unix-style LF line endings. - -(defconst paredit-version 25) -(defconst paredit-beta-p t) - -(eval-and-compile - - (defun paredit-xemacs-p () - ;; No idea where I got this definition from. Edward O'Connor - ;; (hober in #emacs) suggested the current definition. - ;; (and (boundp 'running-xemacs) - ;; running-xemacs) - (featurep 'xemacs)) - - (defun paredit-gnu-emacs-p () - ;++ This could probably be improved. - (not (paredit-xemacs-p))) - - (defmacro xcond (&rest clauses) - "Exhaustive COND. -Signal an error if no clause matches." - `(cond ,@clauses - (t (error "XCOND lost.")))) - - (defalias 'paredit-warn (if (fboundp 'warn) 'warn 'message)) - - (defvar paredit-sexp-error-type - (with-temp-buffer - (insert "(") - (condition-case condition - (backward-sexp) - (error (if (eq (car condition) 'error) - (paredit-warn "%s%s%s%s%s" - "Paredit is unable to discriminate" - " S-expression parse errors from" - " other errors. " - " This may cause obscure problems. " - " Please upgrade Emacs.")) - (car condition))))) - - (defmacro paredit-handle-sexp-errors (body &rest handler) - `(condition-case () - ,body - (,paredit-sexp-error-type ,@handler))) - - (put 'paredit-handle-sexp-errors 'lisp-indent-function 1) - - (defmacro paredit-ignore-sexp-errors (&rest body) - `(paredit-handle-sexp-errors (progn ,@body) - nil)) - - (put 'paredit-ignore-sexp-errors 'lisp-indent-function 0) - - (defmacro paredit-preserving-column (&rest body) - "Evaluate BODY and restore point to former column, relative to code. -Assumes BODY will change only indentation. -If point was on code, it moves with the code. -If point was on indentation, it stays in indentation." - (let ((column (make-symbol "column")) - (indentation (make-symbol "indentation"))) - `(let ((,column (current-column)) - (,indentation (paredit-current-indentation))) - (let ((value (progn ,@body))) - (paredit-restore-column ,column ,indentation) - value)))) - - (put 'paredit-preserving-column 'lisp-indent-function 0) - - nil) - -;;;; Minor Mode Definition - -(defvar paredit-lighter " Paredit" - "Mode line lighter Paredit Mode.") - -(defvar paredit-mode-map (make-sparse-keymap) - "Keymap for the paredit minor mode.") - -(defvar paredit-override-check-parens-function - (lambda (condition) condition nil) - "Function to tell whether unbalanced text should inhibit Paredit Mode.") - -;;;###autoload -(define-minor-mode paredit-mode - "Minor mode for pseudo-structurally editing Lisp code. -With a prefix argument, enable Paredit Mode even if there are - unbalanced parentheses in the buffer. -Paredit behaves badly if parentheses are unbalanced, so exercise - caution when forcing Paredit Mode to be enabled, and consider - fixing unbalanced parentheses instead. -\\<paredit-mode-map>" - :lighter paredit-lighter - ;; Setting `paredit-mode' to false here aborts enabling Paredit Mode. - (if (and paredit-mode - (not current-prefix-arg)) - (condition-case condition - (check-parens) - (error - (if (not (funcall paredit-override-check-parens-function condition)) - (progn (setq paredit-mode nil) - (signal (car condition) (cdr condition)))))))) - -(defun paredit-override-check-parens-interactively (condition) - (y-or-n-p (format "Enable Paredit Mode despite condition %S? " condition))) - -;;;###autoload -(defun enable-paredit-mode () - "Turn on pseudo-structural editing of Lisp code." - (interactive) - (paredit-mode +1)) - -(defun disable-paredit-mode () - "Turn off pseudo-structural editing of Lisp code." - (interactive) - (paredit-mode -1)) - -(defvar paredit-backward-delete-key - (xcond ((paredit-xemacs-p) "BS") - ((paredit-gnu-emacs-p) "DEL"))) - -(defvar paredit-forward-delete-keys - (xcond ((paredit-xemacs-p) '("DEL")) - ((paredit-gnu-emacs-p) '("<delete>" "<deletechar>")))) - -;;;; Paredit Keys - -;;; Separating the definition and initialization of this variable -;;; simplifies the development of paredit, since re-evaluating DEFVAR -;;; forms doesn't actually do anything. - -(defvar paredit-commands nil - "List of paredit commands with their keys and examples.") - -;;; Each specifier is of the form: -;;; (key[s] function (example-input example-output) ...) -;;; where key[s] is either a single string suitable for passing to KBD -;;; or a list of such strings. Entries in this list may also just be -;;; strings, in which case they are headings for the next entries. - -(progn (setq paredit-commands - `( - "Basic Insertion Commands" - ("(" paredit-open-round - ("(a b |c d)" - "(a b (|) c d)") - ("(foo \"bar |baz\" quux)" - "(foo \"bar (|baz\" quux)")) - (")" paredit-close-round - ("(a b |c )" "(a b c)|") - ("; Hello,| world!" - "; Hello,)| world!")) - ("M-)" paredit-close-round-and-newline - ("(defun f (x| ))" - "(defun f (x)\n |)") - ("; (Foo.|" - "; (Foo.)|")) - ("[" paredit-open-square - ("(a b |c d)" - "(a b [|] c d)") - ("(foo \"bar |baz\" quux)" - "(foo \"bar [|baz\" quux)")) - ("]" paredit-close-square - ("(define-key keymap [frob| ] 'frobnicate)" - "(define-key keymap [frob]| 'frobnicate)") - ("; [Bar.|" - "; [Bar.]|")) - - ("\"" paredit-doublequote - ("(frob grovel |full lexical)" - "(frob grovel \"|\" full lexical)" - "(frob grovel \"\"| full lexical)") - ("(foo \"bar |baz\" quux)" - "(foo \"bar \\\"|baz\" quux)") - ("(frob grovel) ; full |lexical" - "(frob grovel) ; full \"|lexical")) - ("M-\"" paredit-meta-doublequote - ("(foo \"bar |baz\" quux)" - "(foo \"bar baz\"| quux)") - ("(foo |(bar #\\x \"baz \\\\ quux\") zot)" - ,(concat "(foo \"|(bar #\\\\x \\\"baz \\\\" - "\\\\ quux\\\")\" zot)"))) - ("\\" paredit-backslash - ("(string #|)\n ; Character to escape: x" - "(string #\\x|)") - ("\"foo|bar\"\n ; Character to escape: \"" - "\"foo\\\"|bar\"")) - (";" paredit-semicolon - ("|(frob grovel)" - ";|(frob grovel)") - ("(frob |grovel)" - "(frob ;|grovel\n )") - ("(frob |grovel (bloit\n zargh))" - "(frob ;|grovel\n (bloit\n zargh))") - ("(frob grovel) |" - "(frob grovel) ;|")) - ("M-;" paredit-comment-dwim - ("(foo |bar) ; baz" - "(foo bar) ; |baz") - ("(frob grovel)|" - "(frob grovel) ;|") - ("(zot (foo bar)\n|\n (baz quux))" - "(zot (foo bar)\n ;; |\n (baz quux))") - ("(zot (foo bar) |(baz quux))" - "(zot (foo bar)\n ;; |\n (baz quux))") - ("|(defun hello-world ...)" - ";;; |\n(defun hello-world ...)")) - - ("C-j" paredit-newline - ("(let ((n (frobbotz))) |(display (+ n 1)\nport))" - ,(concat "(let ((n (frobbotz)))" - "\n |(display (+ n 1)" - "\n port))"))) - - "Deleting & Killing" - (("C-d" ,@paredit-forward-delete-keys) - paredit-forward-delete - ("(quu|x \"zot\")" "(quu| \"zot\")") - ("(quux |\"zot\")" - "(quux \"|zot\")" - "(quux \"|ot\")") - ("(foo (|) bar)" "(foo | bar)") - ("|(foo bar)" "(|foo bar)")) - (,paredit-backward-delete-key - paredit-backward-delete - ("(\"zot\" q|uux)" "(\"zot\" |uux)") - ("(\"zot\"| quux)" - "(\"zot|\" quux)" - "(\"zo|\" quux)") - ("(foo (|) bar)" "(foo | bar)") - ("(foo bar)|" "(foo bar|)")) - ("C-k" paredit-kill - ("(foo bar)| ; Useless comment!" - "(foo bar)|") - ("(|foo bar) ; Useful comment!" - "(|) ; Useful comment!") - ("|(foo bar) ; Useless line!" - "|") - ("(foo \"|bar baz\"\n quux)" - "(foo \"|\"\n quux)")) - ("M-d" paredit-forward-kill-word - ("|(foo bar) ; baz" - "(| bar) ; baz" - "(|) ; baz" - "() ;|") - (";;;| Frobnicate\n(defun frobnicate ...)" - ";;;|\n(defun frobnicate ...)" - ";;;\n(| frobnicate ...)")) - (,(concat "M-" paredit-backward-delete-key) - paredit-backward-kill-word - ("(foo bar) ; baz\n(quux)|" - "(foo bar) ; baz\n(|)" - "(foo bar) ; |\n()" - "(foo |) ; \n()" - "(|) ; \n()")) - - "Movement & Navigation" - ("C-M-f" paredit-forward - ("(foo |(bar baz) quux)" - "(foo (bar baz)| quux)") - ("(foo (bar)|)" - "(foo (bar))|")) - ("C-M-b" paredit-backward - ("(foo (bar baz)| quux)" - "(foo |(bar baz) quux)") - ("(|(foo) bar)" - "|((foo) bar)")) - ("C-M-u" paredit-backward-up) - ("C-M-d" paredit-forward-down) - ("C-M-p" paredit-backward-down) ; Built-in, these are FORWARD- - ("C-M-n" paredit-forward-up) ; & BACKWARD-LIST, which have - ; no need given C-M-f & C-M-b. - - "Depth-Changing Commands" - ("M-(" paredit-wrap-round - ("(foo |bar baz)" - "(foo (|bar) baz)")) - ("M-s" paredit-splice-sexp - ("(foo (bar| baz) quux)" - "(foo bar| baz quux)")) - (("M-<up>" "ESC <up>") - paredit-splice-sexp-killing-backward - ("(foo (let ((x 5)) |(sqrt n)) bar)" - "(foo |(sqrt n) bar)")) - (("M-<down>" "ESC <down>") - paredit-splice-sexp-killing-forward - ("(a (b c| d e) f)" - "(a b c| f)")) - ("M-r" paredit-raise-sexp - ("(dynamic-wind in (lambda () |body) out)" - "(dynamic-wind in |body out)" - "|body")) - ("M-?" paredit-convolute-sexp - ("(let ((x 5) (y 3)) (frob |(zwonk)) (wibblethwop))" - "(frob |(let ((x 5) (y 3)) (zwonk) (wibblethwop)))")) - - "Barfage & Slurpage" - (("C-)" "C-<right>") - paredit-forward-slurp-sexp - ("(foo (bar |baz) quux zot)" - "(foo (bar |baz quux) zot)") - ("(a b ((c| d)) e f)" - "(a b ((c| d) e) f)")) - (("C-}" "C-<left>") - paredit-forward-barf-sexp - ("(foo (bar |baz quux) zot)" - "(foo (bar |baz) quux zot)")) - (("C-(" "C-M-<left>" "ESC C-<left>") - paredit-backward-slurp-sexp - ("(foo bar (baz| quux) zot)" - "(foo (bar baz| quux) zot)") - ("(a b ((c| d)) e f)" - "(a (b (c| d)) e f)")) - (("C-{" "C-M-<right>" "ESC C-<right>") - paredit-backward-barf-sexp - ("(foo (bar baz |quux) zot)" - "(foo bar (baz |quux) zot)")) - - "Miscellaneous Commands" - ("M-S" paredit-split-sexp - ("(hello| world)" - "(hello)| (world)") - ("\"Hello, |world!\"" - "\"Hello, \"| \"world!\"")) - ("M-J" paredit-join-sexps - ("(hello)| (world)" - "(hello| world)") - ("\"Hello, \"| \"world!\"" - "\"Hello, |world!\"") - ("hello-\n| world" - "hello-|world")) - ("C-c C-M-l" paredit-recenter-on-sexp) - ("M-q" paredit-reindent-defun) - )) - nil) ; end of PROGN - -;;;;; Command Examples - -(eval-and-compile - (defmacro paredit-do-commands (vars string-case &rest body) - (let ((spec (nth 0 vars)) - (keys (nth 1 vars)) - (fn (nth 2 vars)) - (examples (nth 3 vars))) - `(dolist (,spec paredit-commands) - (if (stringp ,spec) - ,string-case - (let ((,keys (let ((k (car ,spec))) - (cond ((stringp k) (list k)) - ((listp k) k) - (t (error "Invalid paredit command %s." - ,spec))))) - (,fn (cadr ,spec)) - (,examples (cddr ,spec))) - ,@body))))) - - (put 'paredit-do-commands 'lisp-indent-function 2)) - -(defun paredit-define-keys () - (paredit-do-commands (spec keys fn examples) - nil ; string case - (dolist (key keys) - (define-key paredit-mode-map (read-kbd-macro key) fn)))) - -(defun paredit-function-documentation (fn) - (let ((original-doc (get fn 'paredit-original-documentation)) - (doc (documentation fn 'function-documentation))) - (or original-doc - (progn (put fn 'paredit-original-documentation doc) - doc)))) - -(defun paredit-annotate-mode-with-examples () - (let ((contents - (list (paredit-function-documentation 'paredit-mode)))) - (paredit-do-commands (spec keys fn examples) - (push (concat "\n \n" spec "\n") - contents) - (let ((name (symbol-name fn))) - (if (string-match (symbol-name 'paredit-) name) - (push (concat "\n\n\\[" name "]\t" name - (if examples - (mapconcat (lambda (example) - (concat - "\n" - (mapconcat 'identity - example - "\n --->\n") - "\n")) - examples - "") - "\n (no examples)\n")) - contents)))) - (put 'paredit-mode 'function-documentation - (apply 'concat (reverse contents)))) - ;; PUT returns the huge string we just constructed, which we don't - ;; want it to return. - nil) - -(defun paredit-annotate-functions-with-examples () - (paredit-do-commands (spec keys fn examples) - nil ; string case - (put fn 'function-documentation - (concat (paredit-function-documentation fn) - "\n\n\\<paredit-mode-map>\\[" (symbol-name fn) "]\n" - (mapconcat (lambda (example) - (concat "\n" - (mapconcat 'identity - example - "\n ->\n") - "\n")) - examples - ""))))) - -;;;;; HTML Examples - -(defun paredit-insert-html-examples () - "Insert HTML for a paredit quick reference table." - (interactive) - (let ((insert-lines - (lambda (&rest lines) (dolist (line lines) (insert line) (newline)))) - (initp nil)) - (paredit-do-commands (spec keys fn examples) - (progn (if initp - (funcall insert-lines "</table>") - (setq initp t)) - (funcall insert-lines (concat "<h3>" spec "</h3>")) - (funcall insert-lines "<table>")) - (let ((name (symbol-name fn)) - (keys - (mapconcat (lambda (key) - (concat "<tt>" (paredit-html-quote key) "</tt>")) - keys - ", "))) - (funcall insert-lines "<tr>") - (funcall insert-lines (concat " <th align=\"left\">" keys "</th>")) - (funcall insert-lines (concat " <th align=\"left\">" name "</th>")) - (funcall insert-lines "</tr>") - (funcall insert-lines - "<tr><td colspan=\"2\"><table cellpadding=\"5\"><tr>") - (dolist (example examples) - (let ((prefix "<td><table border=\"1\"><tr><td><table><tr><td><pre>") - (examples - (mapconcat 'paredit-html-quote - example - (concat "</pre></td></tr>" - "<tr><th>↓</th></tr>" - "<tr><td><pre>"))) - (suffix "</pre></td></tr></table></td></tr></table></td>")) - (funcall insert-lines (concat prefix examples suffix)))) - (funcall insert-lines "</tr></table></td></tr>"))) - (funcall insert-lines "</table>"))) - -(defun paredit-html-quote (string) - (with-temp-buffer - (dotimes (i (length string)) - (insert (let ((c (elt string i))) - (cond ((eq c ?\<) "<") - ((eq c ?\>) ">") - ((eq c ?\&) "&") - ((eq c ?\') "'") - ((eq c ?\") """) - (t c))))) - (buffer-string))) - -;;;; Delimiter Insertion - -(eval-and-compile - (defun paredit-conc-name (&rest strings) - (intern (apply 'concat strings))) - - (defmacro define-paredit-pair (open close name) - `(progn - (defun ,(paredit-conc-name "paredit-open-" name) (&optional n) - ,(concat "Insert a balanced " name " pair. -With a prefix argument N, put the closing " name " after N - S-expressions forward. -If the region is active, `transient-mark-mode' is enabled, and the - region's start and end fall in the same parenthesis depth, insert a - " name " pair around the region. -If in a string or a comment, insert a single " name ". -If in a character literal, do nothing. This prevents changing what was - in the character literal to a meaningful delimiter unintentionally.") - (interactive "P") - (cond ((or (paredit-in-string-p) - (paredit-in-comment-p)) - (insert ,open)) - ((not (paredit-in-char-p)) - (paredit-insert-pair n ,open ,close 'goto-char) - (save-excursion (backward-up-list) (indent-sexp))))) - (defun ,(paredit-conc-name "paredit-close-" name) () - ,(concat "Move past one closing delimiter and reindent. -\(Agnostic to the specific closing delimiter.) -If in a string or comment, insert a single closing " name ". -If in a character literal, do nothing. This prevents changing what was - in the character literal to a meaningful delimiter unintentionally.") - (interactive) - (paredit-move-past-close ,close)) - (defun ,(paredit-conc-name "paredit-close-" name "-and-newline") () - ,(concat "Move past one closing delimiter, add a newline," - " and reindent. -If there was a margin comment after the closing delimiter, preserve it - on the same line.") - (interactive) - (paredit-move-past-close-and-newline ,close)) - (defun ,(paredit-conc-name "paredit-wrap-" name) - (&optional argument) - ,(concat "Wrap the following S-expression. -See `paredit-wrap-sexp' for more details.") - (interactive "P") - (paredit-wrap-sexp argument ,open ,close)) - (add-to-list 'paredit-wrap-commands - ',(paredit-conc-name "paredit-wrap-" name))))) - -(defvar paredit-wrap-commands '(paredit-wrap-sexp) - "List of paredit commands that wrap S-expressions. -Used by `paredit-yank-pop'; for internal paredit use only.") - -(define-paredit-pair ?\( ?\) "round") -(define-paredit-pair ?\[ ?\] "square") -(define-paredit-pair ?\{ ?\} "curly") -(define-paredit-pair ?\< ?\> "angled") - -;;; Aliases for the old names. - -(defalias 'paredit-open-parenthesis 'paredit-open-round) -(defalias 'paredit-close-parenthesis 'paredit-close-round) -(defalias 'paredit-close-parenthesis-and-newline - 'paredit-close-round-and-newline) - -(defalias 'paredit-open-bracket 'paredit-open-square) -(defalias 'paredit-close-bracket 'paredit-close-square) -(defalias 'paredit-close-bracket-and-newline - 'paredit-close-square-and-newline) - -(defun paredit-move-past-close (close) - (paredit-move-past-close-and close - (lambda () - (paredit-blink-paren-match nil)))) - -(defun paredit-move-past-close-and-newline (close) - (paredit-move-past-close-and close - (lambda () - (let ((comment.point (paredit-find-comment-on-line))) - (newline) - (if comment.point - (save-excursion - (forward-line -1) - (end-of-line) - (indent-to (cdr comment.point)) - (insert (car comment.point))))) - (lisp-indent-line) - (paredit-ignore-sexp-errors (indent-sexp)) - (paredit-blink-paren-match t)))) - -(defun paredit-move-past-close-and (close if-moved) - (if (or (paredit-in-string-p) - (paredit-in-comment-p)) - (insert close) - (if (paredit-in-char-p) (forward-char)) - (paredit-move-past-close-and-reindent close) - (funcall if-moved))) - -(defun paredit-find-comment-on-line () - "Find a margin comment on the current line. -Return nil if there is no such comment or if there is anything but - whitespace until such a comment. -If such a comment exists, delete the comment (including all leading - whitespace) and return a cons whose car is the comment as a string - and whose cdr is the point of the comment's initial semicolon, - relative to the start of the line." - (save-excursion - (paredit-skip-whitespace t (point-at-eol)) - (and (eq ?\; (char-after)) - (not (eq ?\; (char-after (1+ (point))))) - (not (or (paredit-in-string-p) - (paredit-in-char-p))) - (let* ((start ;Move to before the semicolon. - (progn (backward-char) (point))) - (comment - (buffer-substring start (point-at-eol)))) - (paredit-skip-whitespace nil (point-at-bol)) - (delete-region (point) (point-at-eol)) - (cons comment (- start (point-at-bol))))))) - -(defun paredit-insert-pair (n open close forward) - (let* ((regionp - (and (paredit-region-active-p) - (paredit-region-safe-for-insert-p))) - (end - (and regionp - (not n) - (prog1 (region-end) (goto-char (region-beginning)))))) - (let ((spacep (paredit-space-for-delimiter-p nil open))) - (if spacep (insert " ")) - (insert open) - (save-excursion - ;; Move past the desired region. - (cond (n - (funcall forward - (paredit-scan-sexps-hack (point) - (prefix-numeric-value n)))) - (regionp - (funcall forward (+ end (if spacep 2 1))))) - ;; The string case can happen if we are inserting string - ;; delimiters. The comment case may happen by moving to the - ;; end of a buffer that has a comment with no trailing newline. - (if (and (not (paredit-in-string-p)) - (paredit-in-comment-p)) - (newline)) - (insert close) - (if (paredit-space-for-delimiter-p t close) - (insert " ")))))) - -;++ This needs a better name... - -(defun paredit-scan-sexps-hack (point n) - (save-excursion - (goto-char point) - (let ((direction (if (< 0 n) +1 -1)) - (magnitude (abs n)) - (count 0)) - (catch 'exit - (while (< count magnitude) - (let ((p - (paredit-handle-sexp-errors (scan-sexps (point) direction) - nil))) - (if (not p) (throw 'exit nil)) - (goto-char p)) - (setq count (+ count 1))))) - (point))) - -(defun paredit-region-safe-for-insert-p () - (save-excursion - (let ((beginning (region-beginning)) - (end (region-end))) - (goto-char beginning) - (let* ((beginning-state (paredit-current-parse-state)) - (end-state - (parse-partial-sexp beginning end nil nil beginning-state))) - (and (= (nth 0 beginning-state) ; 0. depth in parens - (nth 0 end-state)) - (eq (nth 3 beginning-state) ; 3. non-nil if inside a - (nth 3 end-state)) ; string - (eq (nth 4 beginning-state) ; 4. comment status, yada - (nth 4 end-state)) - (eq (nth 5 beginning-state) ; 5. t if following char - (nth 5 end-state))))))) ; quote - -(defvar paredit-space-for-delimiter-predicates nil - "List of predicates for whether to put space by delimiter at point. -Each predicate is a function that is is applied to two arguments, ENDP - and DELIMITER, and that returns a boolean saying whether to put a - space next to the delimiter -- before/after the delimiter if ENDP is - false/true, respectively. -If any predicate returns false, no space is inserted: every predicate - has veto power. -Each predicate may assume that the point is not at the beginning/end of - the buffer, and that the point is preceded/followed by a word - constituent, symbol constituent, string quote, or delimiter matching - DELIMITER, if ENDP is false/true, respectively. -Each predicate should examine only text before/after the point if ENDP is - false/true, respectively.") - -(defun paredit-space-for-delimiter-p (endp delimiter) - ;; If at the buffer limit, don't insert a space. If there is a word, - ;; symbol, other quote, or non-matching parenthesis delimiter (i.e. a - ;; close when want an open the string or an open when we want to - ;; close the string), do insert a space. - (and (not (if endp (eobp) (bobp))) - (memq (char-syntax (if endp (char-after) (char-before))) - (list ?w ?_ ?\" - (let ((matching (matching-paren delimiter))) - (and matching (char-syntax matching))) - (and (not endp) - (eq ?\" (char-syntax delimiter)) - ?\) ))) - (catch 'exit - (dolist (predicate paredit-space-for-delimiter-predicates) - (if (not (funcall predicate endp delimiter)) - (throw 'exit nil))) - t))) - -(defun paredit-move-past-close-and-reindent (close) - (let ((open (paredit-missing-close))) - (if open - (if (eq close (matching-paren open)) - (save-excursion - (message "Missing closing delimiter: %c" close) - (insert close)) - (error "Mismatched missing closing delimiter: %c ... %c" - open close)))) - (up-list) - (if (catch 'return ; This CATCH returns T if it - (while t ; should delete leading spaces - (save-excursion ; and NIL if not. - (let ((before-paren (1- (point)))) - (back-to-indentation) - (cond ((not (eq (point) before-paren)) - ;; Can't call PAREDIT-DELETE-LEADING-WHITESPACE - ;; here -- we must return from SAVE-EXCURSION - ;; first. - (throw 'return t)) - ((save-excursion (forward-line -1) - (end-of-line) - (paredit-in-comment-p)) - ;; Moving the closing delimiter any further - ;; would put it into a comment, so we just - ;; indent the closing delimiter where it is and - ;; abort the loop, telling its continuation that - ;; no leading whitespace should be deleted. - (lisp-indent-line) - (throw 'return nil)) - (t (delete-indentation))))))) - (paredit-delete-leading-whitespace))) - -(defun paredit-missing-close () - (save-excursion - (paredit-handle-sexp-errors (backward-up-list) - (error "Not inside a list.")) - (let ((open (char-after))) - (paredit-handle-sexp-errors (progn (forward-sexp) nil) - open)))) - -(defun paredit-delete-leading-whitespace () - ;; This assumes that we're on the closing delimiter already. - (save-excursion - (backward-char) - (while (let ((syn (char-syntax (char-before)))) - (and (or (eq syn ?\ ) (eq syn ?-)) ; whitespace syntax - ;; The above line is a perfect example of why the - ;; following test is necessary. - (not (paredit-in-char-p (1- (point)))))) - (delete-char -1)))) - -(defun paredit-blink-paren-match (another-line-p) - (if (and blink-matching-paren - (or (not show-paren-mode) another-line-p)) - (paredit-ignore-sexp-errors - (save-excursion - (backward-sexp) - (forward-sexp) - ;; SHOW-PAREN-MODE inhibits any blinking, so we disable it - ;; locally here. - (let ((show-paren-mode nil)) - (blink-matching-open)))))) - -(defun paredit-doublequote (&optional n) - "Insert a pair of double-quotes. -With a prefix argument N, wrap the following N S-expressions in - double-quotes, escaping intermediate characters if necessary. -If the region is active, `transient-mark-mode' is enabled, and the - region's start and end fall in the same parenthesis depth, insert a - pair of double-quotes around the region, again escaping intermediate - characters if necessary. -Inside a comment, insert a literal double-quote. -At the end of a string, move past the closing double-quote. -In the middle of a string, insert a backslash-escaped double-quote. -If in a character literal, do nothing. This prevents accidentally - changing a what was in the character literal to become a meaningful - delimiter unintentionally." - (interactive "P") - (cond ((paredit-in-string-p) - (if (eq (point) (- (paredit-enclosing-string-end) 1)) - (forward-char) ; Just move past the closing quote. - ;; Don't split a \x into an escaped backslash and a string end. - (if (paredit-in-string-escape-p) (forward-char)) - (insert ?\\ ?\" ))) - ((paredit-in-comment-p) - (insert ?\" )) - ((not (paredit-in-char-p)) - (paredit-insert-pair n ?\" ?\" 'paredit-forward-for-quote)))) - -(defun paredit-meta-doublequote (&optional n) - "Move to the end of the string. -If not in a string, act as `paredit-doublequote'; if not prefix argument - is specified and the region is not active or `transient-mark-mode' is - disabled, the default is to wrap one S-expression, however, not zero." - (interactive "P") - (if (not (paredit-in-string-p)) - (paredit-doublequote (or n (and (not (paredit-region-active-p)) 1))) - (goto-char (paredit-enclosing-string-end)))) - -(defun paredit-meta-doublequote-and-newline (&optional n) - "Move to the end of the string, insert a newline, and indent. -If not in a string, act as `paredit-doublequote'; if not prefix argument - is specified and the region is not active or `transient-mark-mode' is - disabled, the default is to wrap one S-expression, however, not zero." - (interactive "P") - (if (not (paredit-in-string-p)) - (paredit-doublequote (or n (and (not (paredit-region-active-p)) 1))) - (progn (goto-char (paredit-enclosing-string-end)) - (newline) - (lisp-indent-line) - (paredit-ignore-sexp-errors (indent-sexp))))) - -(defun paredit-forward-for-quote (end) - (let ((state (paredit-current-parse-state))) - (while (< (point) end) - (let ((new-state (parse-partial-sexp (point) (1+ (point)) - nil nil state))) - (if (paredit-in-string-p new-state) - (if (not (paredit-in-string-escape-p)) - (setq state new-state) - ;; Escape character: turn it into an escaped escape - ;; character by appending another backslash. - (insert ?\\ ) - ;; Now the point is after both escapes, and we want to - ;; rescan from before the first one to after the second - ;; one. - (setq state - (parse-partial-sexp (- (point) 2) (point) - nil nil state)) - ;; Advance the end point, since we just inserted a new - ;; character. - (setq end (1+ end))) - ;; String: escape by inserting a backslash before the quote. - (backward-char) - (insert ?\\ ) - ;; The point is now between the escape and the quote, and we - ;; want to rescan from before the escape to after the quote. - (setq state - (parse-partial-sexp (1- (point)) (1+ (point)) - nil nil state)) - ;; Advance the end point for the same reason as above. - (setq end (1+ end))))))) - -;;;; Escape Insertion - -(defun paredit-backslash () - "Insert a backslash followed by a character to escape." - (interactive) - (cond ((paredit-in-string-p) (paredit-backslash-interactive)) - ((paredit-in-comment-p) (insert ?\\)) - ((paredit-in-char-p) (forward-char) (paredit-backslash-interactive)) - (t (paredit-backslash-interactive)))) - -(defun paredit-backslash-interactive () - (insert ?\\ ) - ;; Read a character to insert after the backslash. If anything - ;; goes wrong -- the user hits delete (entering the rubout - ;; `character'), aborts with C-g, or enters non-character input - ;; -- then delete the backslash to avoid a dangling escape. - (let ((delete-p t)) - (unwind-protect - (let ((char (read-char "Character to escape: " t))) - (if (not (eq char ?\^?)) - (progn (message "Character to escape: %c" char) - (insert char) - (setq delete-p nil)))) - (if delete-p - (progn (message "Deleting escape.") - (delete-char -1)))))) - -(defun paredit-newline () - "Insert a newline and indent it. -This is like `newline-and-indent', but it not only indents the line - that the point is on but also the S-expression following the point, - if there is one. -Move forward one character first if on an escaped character. -If in a string, just insert a literal newline. -If in a comment and if followed by invalid structure, call - `indent-new-comment-line' to keep the invalid structure in a - comment." - (interactive) - (cond ((paredit-in-string-p) - (newline)) - ((paredit-in-comment-p) - (if (paredit-region-ok-p (point) (point-at-eol)) - (progn (newline-and-indent) - (paredit-ignore-sexp-errors (indent-sexp))) - (indent-new-comment-line))) - (t - (if (paredit-in-char-p) - (forward-char)) - (newline-and-indent) - ;; Indent the following S-expression, but don't signal an - ;; error if there's only a closing delimiter after the point. - (paredit-ignore-sexp-errors (indent-sexp))))) - -(defun paredit-reindent-defun (&optional argument) - "Reindent the definition that the point is on. -If the point is in a string or a comment, fill the paragraph instead, - and with a prefix argument, justify as well." - (interactive "P") - (if (or (paredit-in-string-p) - (paredit-in-comment-p)) - (lisp-fill-paragraph argument) - (paredit-preserving-column - (save-excursion - (end-of-defun) - (beginning-of-defun) - (indent-sexp))))) - -;;;; Comment Insertion - -(defun paredit-semicolon (&optional n) - "Insert a semicolon. -With a prefix argument N, insert N semicolons. -If in a string, do just that and nothing else. -If in a character literal, move to the beginning of the character - literal before inserting the semicolon. -If the enclosing list ends on the line after the point, break the line - after the last S-expression following the point. -If a list begins on the line after the point but ends on a different - line, break the line after the last S-expression following the point - before the list." - (interactive "p") - (if (or (paredit-in-string-p) (paredit-in-comment-p)) - (insert (make-string (or n 1) ?\; )) - (if (paredit-in-char-p) - (backward-char 2)) - (let ((line-break-point (paredit-semicolon-find-line-break-point))) - (if line-break-point - (paredit-semicolon-with-line-break line-break-point (or n 1)) - (insert (make-string (or n 1) ?\; )))))) - -(defun paredit-semicolon-find-line-break-point () - (and (not (eolp)) ;Implies (not (eobp)). - (let ((eol (point-at-eol))) - (save-excursion - (catch 'exit - (while t - (let ((line-break-point (point))) - (cond ((paredit-handle-sexp-errors (progn (forward-sexp) t) - nil) - ;; Successfully advanced by an S-expression. - ;; If that S-expression started on this line - ;; and ended on another one, break here. - (cond ((not (eq eol (point-at-eol))) - (throw 'exit - (and (save-excursion - (backward-sexp) - (eq eol (point-at-eol))) - line-break-point))) - ((eobp) - (throw 'exit nil)))) - ((save-excursion - (paredit-skip-whitespace t (point-at-eol)) - (or (eolp) (eobp) (eq (char-after) ?\;))) - ;; Can't move further, but there's no closing - ;; delimiter we're about to clobber -- either - ;; it's on the next line or we're at the end of - ;; the buffer. Don't break the line. - (throw 'exit nil)) - (t - ;; Can't move because we hit a delimiter at the - ;; end of this line. Break here. - (throw 'exit line-break-point)))))))))) - -(defun paredit-semicolon-with-line-break (line-break-point n) - (let ((line-break-marker (make-marker))) - (set-marker line-break-marker line-break-point) - (set-marker-insertion-type line-break-marker t) - (insert (make-string (or n 1) ?\; )) - (save-excursion - (goto-char line-break-marker) - (set-marker line-break-marker nil) - (newline) - (lisp-indent-line) - ;; This step is redundant if we are inside a list, but even if we - ;; are at the top level, we want at least to indent whatever we - ;; bumped off the line. - (paredit-ignore-sexp-errors (indent-sexp)) - (paredit-indent-sexps)))) - -;;; This is all a horrible, horrible hack, primarily for GNU Emacs 21, -;;; in which there is no `comment-or-uncomment-region'. - -(autoload 'comment-forward "newcomment") -(autoload 'comment-normalize-vars "newcomment") -(autoload 'comment-region "newcomment") -(autoload 'comment-search-forward "newcomment") -(autoload 'uncomment-region "newcomment") - -(defun paredit-initialize-comment-dwim () - (require 'newcomment) - (if (not (fboundp 'comment-or-uncomment-region)) - (defalias 'comment-or-uncomment-region - (lambda (beginning end &optional argument) - (interactive "*r\nP") - (if (save-excursion (goto-char beginning) - (comment-forward (point-max)) - (<= end (point))) - (uncomment-region beginning end argument) - (comment-region beginning end argument))))) - (defalias 'paredit-initialize-comment-dwim 'comment-normalize-vars) - (comment-normalize-vars)) - -(defun paredit-comment-dwim (&optional argument) - "Call the Lisp comment command you want (Do What I Mean). -This is like `comment-dwim', but it is specialized for Lisp editing. -If transient mark mode is enabled and the mark is active, comment or - uncomment the selected region, depending on whether it was entirely - commented not not already. -If there is already a comment on the current line, with no prefix - argument, indent to that comment; with a prefix argument, kill that - comment. -Otherwise, insert a comment appropriate for the context and ensure that - any code following the comment is moved to the next line. -At the top level, where indentation is calculated to be at column 0, - insert a triple-semicolon comment; within code, where the indentation - is calculated to be non-zero, and on the line there is either no code - at all or code after the point, insert a double-semicolon comment; - and if the point is after all code on the line, insert a single- - semicolon margin comment at `comment-column'." - (interactive "*P") - (paredit-initialize-comment-dwim) - (cond ((paredit-region-active-p) - (comment-or-uncomment-region (region-beginning) - (region-end) - argument)) - ((paredit-comment-on-line-p) - (if argument - (comment-kill (if (integerp argument) argument nil)) - (comment-indent))) - (t (paredit-insert-comment)))) - -(defun paredit-comment-on-line-p () - "True if there is a comment on the line following point. -This is expected to be called only in `paredit-comment-dwim'; do not - call it elsewhere." - (save-excursion - (beginning-of-line) - (let ((comment-p nil)) - ;; Search forward for a comment beginning. If there is one, set - ;; COMMENT-P to true; if not, it will be nil. - (while (progn - (setq comment-p ;t -> no error - (comment-search-forward (point-at-eol) t)) - (and comment-p - (or (paredit-in-string-p) - (paredit-in-char-p (1- (point)))))) - (forward-char)) - comment-p))) - -(defun paredit-insert-comment () - (let ((code-after-p - (save-excursion (paredit-skip-whitespace t (point-at-eol)) - (not (eolp)))) - (code-before-p - (save-excursion (paredit-skip-whitespace nil (point-at-bol)) - (not (bolp))))) - (cond ((and (bolp) - (let ((indent - (let ((indent (calculate-lisp-indent))) - (if (consp indent) (car indent) indent)))) - (and indent (zerop indent)))) - ;; Top-level comment - (if code-after-p (save-excursion (newline))) - (insert ";;; ")) - ((or code-after-p (not code-before-p)) - ;; Code comment - (if code-before-p - (newline-and-indent) - (lisp-indent-line)) - (insert ";; ") - (if code-after-p - (save-excursion - (newline) - (lisp-indent-line) - (paredit-indent-sexps)))) - (t - ;; Margin comment - (indent-to comment-column 1) ; 1 -> force one leading space - (insert ?\; ))))) - -;;;; Character Deletion - -(defun paredit-forward-delete (&optional argument) - "Delete a character forward or move forward over a delimiter. -If on an opening S-expression delimiter, move forward into the - S-expression. -If on a closing S-expression delimiter, refuse to delete unless the - S-expression is empty, in which case delete the whole S-expression. -With a numeric prefix argument N, delete N characters forward. -With a `C-u' prefix argument, simply delete a character forward, - without regard for delimiter balancing." - (interactive "P") - (cond ((or (consp argument) (eobp)) - (delete-char +1)) - ((integerp argument) - (if (< argument 0) - (paredit-backward-delete argument) - (while (> argument 0) - (paredit-forward-delete) - (setq argument (- argument 1))))) - ((paredit-in-string-p) - (paredit-forward-delete-in-string)) - ((paredit-in-comment-p) - (paredit-forward-delete-in-comment)) - ((paredit-in-char-p) ; Escape -- delete both chars. - (delete-char -1) - (delete-char +1)) - ((eq (char-after) ?\\ ) ; ditto - (delete-char +2)) - ((let ((syn (char-syntax (char-after)))) - (or (eq syn ?\( ) - (eq syn ?\" ))) - (if (save-excursion - (paredit-handle-sexp-errors (progn (forward-sexp) t) - nil)) - (forward-char) - (message "Deleting spurious opening delimiter.") - (delete-char +1))) - ((and (not (paredit-in-char-p (1- (point)))) - (eq (char-syntax (char-after)) ?\) ) - (eq (char-before) (matching-paren (char-after)))) - (delete-char -1) ; Empty list -- delete both - (delete-char +1)) ; delimiters. - ((eq ?\; (char-after)) - (paredit-forward-delete-comment-start)) - ((eq (char-syntax (char-after)) ?\) ) - (if (paredit-handle-sexp-errors - (save-excursion (forward-char) (backward-sexp) t) - nil) - (message "End of list!") - (progn - (message "Deleting spurious closing delimiter.") - (delete-char +1)))) - ;; Just delete a single character, if it's not a closing - ;; delimiter. (The character literal case is already handled - ;; by now.) - (t (delete-char +1)))) - -(defun paredit-forward-delete-in-string () - (let ((start+end (paredit-string-start+end-points))) - (cond ((not (eq (point) (cdr start+end))) - ;; If it's not the close-quote, it's safe to delete. But - ;; first handle the case that we're in a string escape. - (cond ((paredit-in-string-escape-p) - ;; We're right after the backslash, so backward - ;; delete it before deleting the escaped character. - (delete-char -1)) - ((eq (char-after) ?\\ ) - ;; If we're not in a string escape, but we are on a - ;; backslash, it must start the escape for the next - ;; character, so delete the backslash before deleting - ;; the next character. - (delete-char +1))) - (delete-char +1)) - ((eq (1- (point)) (car start+end)) - ;; If it is the close-quote, delete only if we're also right - ;; past the open-quote (i.e. it's empty), and then delete - ;; both quotes. Otherwise we refuse to delete it. - (delete-char -1) - (delete-char +1))))) - -(defun paredit-check-forward-delete-in-comment () - ;; Point is in a comment, possibly at eol. We are about to delete - ;; some characters forward; if we are at eol, we are about to delete - ;; the line break. Refuse to do so if if moving the next line into - ;; the comment would break structure. - (if (eolp) - (let ((next-line-start (point-at-bol 2)) - (next-line-end (point-at-eol 2))) - (paredit-check-region next-line-start next-line-end)))) - -(defun paredit-forward-delete-in-comment () - (paredit-check-forward-delete-in-comment) - (delete-char +1)) - -(defun paredit-forward-delete-comment-start () - ;; Point precedes a comment start (not at eol). Refuse to delete a - ;; comment start if the comment contains unbalanced junk. - (paredit-check-region (+ (point) 1) (point-at-eol)) - (delete-char +1)) - -(defun paredit-backward-delete (&optional argument) - "Delete a character backward or move backward over a delimiter. -If on a closing S-expression delimiter, move backward into the - S-expression. -If on an opening S-expression delimiter, refuse to delete unless the - S-expression is empty, in which case delete the whole S-expression. -With a numeric prefix argument N, delete N characters backward. -With a `C-u' prefix argument, simply delete a character backward, - without regard for delimiter balancing." - (interactive "P") - (cond ((or (consp argument) (bobp)) - ;++ Should this untabify? - (delete-char -1)) - ((integerp argument) - (if (< argument 0) - (paredit-forward-delete (- 0 argument)) - (while (> argument 0) - (paredit-backward-delete) - (setq argument (- argument 1))))) - ((paredit-in-string-p) - (paredit-backward-delete-in-string)) - ((paredit-in-comment-p) - (paredit-backward-delete-in-comment)) - ((paredit-in-char-p) ; Escape -- delete both chars. - (delete-char -1) - (delete-char +1)) - ((paredit-in-char-p (1- (point))) - (delete-char -2)) ; ditto - ((let ((syn (char-syntax (char-before)))) - (or (eq syn ?\) ) - (eq syn ?\" ))) - (if (save-excursion - (paredit-handle-sexp-errors (progn (backward-sexp) t) - nil)) - (backward-char) - (message "Deleting spurious closing delimiter.") - (delete-char -1))) - ((and (eq (char-syntax (char-before)) ?\( ) - (eq (char-after) (matching-paren (char-before)))) - (delete-char -1) ; Empty list -- delete both - (delete-char +1)) ; delimiters. - ((bolp) - (paredit-backward-delete-maybe-comment-end)) - ((eq (char-syntax (char-before)) ?\( ) - (if (paredit-handle-sexp-errors - (save-excursion (backward-char) (forward-sexp) t) - nil) - (message "Beginning of list!") - (progn - (message "Deleting spurious closing delimiter.") - (delete-char -1)))) - ;; Delete it, unless it's an opening delimiter. The case of - ;; character literals is already handled by now. - (t - ;; Turn off the @#&*&!^&(%^ botch in GNU Emacs 24 that changed - ;; `backward-delete-char' and `backward-delete-char-untabify' - ;; semantically so that they delete the region in transient - ;; mark mode. - (let ((delete-active-region nil)) - (backward-delete-char-untabify +1))))) - -(defun paredit-backward-delete-in-string () - (let ((start+end (paredit-string-start+end-points))) - (cond ((not (eq (1- (point)) (car start+end))) - ;; If it's not the open-quote, it's safe to delete. - (if (paredit-in-string-escape-p) - ;; If we're on a string escape, since we're about to - ;; delete the backslash, we must first delete the - ;; escaped char. - (delete-char +1)) - (delete-char -1) - (if (paredit-in-string-escape-p) - ;; If, after deleting a character, we find ourselves in - ;; a string escape, we must have deleted the escaped - ;; character, and the backslash is behind the point, so - ;; backward delete it. - (delete-char -1))) - ((eq (point) (cdr start+end)) - ;; If it is the open-quote, delete only if we're also right - ;; past the close-quote (i.e. it's empty), and then delete - ;; both quotes. Otherwise we refuse to delete it. - (delete-char -1) - (delete-char +1))))) - -(defun paredit-backward-delete-in-comment () - ;; Point is in a comment, possibly just after the comment start. - ;; Refuse to delete a comment start if the comment contains - ;; unbalanced junk. - (if (save-excursion - (backward-char) - ;; Must call `paredit-in-string-p' before - ;; `paredit-in-comment-p'. - (not (or (paredit-in-string-p) (paredit-in-comment-p)))) - (paredit-check-region (point) (point-at-eol))) - (backward-delete-char-untabify +1)) - -(defun paredit-backward-delete-maybe-comment-end () - ;; Point is at bol, possibly just after a comment end (i.e., the - ;; previous line may have had a line comment). Refuse to delete a - ;; comment end if moving the current line into the previous line's - ;; comment would break structure. - (if (save-excursion - (backward-char) - (and (not (paredit-in-string-p)) (paredit-in-comment-p))) - (paredit-check-region (point-at-eol) (point-at-bol))) - (delete-char -1)) - -;;;; Killing - -(defun paredit-kill (&optional argument) - "Kill a line as if with `kill-line', but respecting delimiters. -In a string, act exactly as `kill-line' but do not kill past the - closing string delimiter. -On a line with no S-expressions on it starting after the point or - within a comment, act exactly as `kill-line'. -Otherwise, kill all S-expressions that start after the point. -With a `C-u' prefix argument, just do the standard `kill-line'. -With a numeric prefix argument N, do `kill-line' that many times." - (interactive "P") - (cond (argument - (kill-line (if (integerp argument) argument 1))) - ((paredit-in-string-p) - (paredit-kill-line-in-string)) - ((paredit-in-comment-p) - (paredit-kill-line-in-comment)) - ((save-excursion (paredit-skip-whitespace t (point-at-eol)) - (or (eolp) (eq (char-after) ?\; ))) - ;** Be careful about trailing backslashes. - (if (paredit-in-char-p) - (backward-char)) - (kill-line)) - (t (paredit-kill-sexps-on-line)))) - -(defun paredit-kill-line-in-string () - (if (save-excursion (paredit-skip-whitespace t (point-at-eol)) - (eolp)) - (kill-line) - (save-excursion - ;; Be careful not to split an escape sequence. - (if (paredit-in-string-escape-p) - (backward-char)) - (kill-region (point) - (min (point-at-eol) - (cdr (paredit-string-start+end-points))))))) - -(defun paredit-kill-line-in-comment () - ;; The variable `kill-whole-line' is not relevant: the point is in a - ;; comment, and hence not at the beginning of the line. - (paredit-check-forward-delete-in-comment) - (kill-line)) - -(defun paredit-kill-sexps-on-line () - (if (paredit-in-char-p) ; Move past the \ and prefix. - (backward-char 2)) ; (# in Scheme/CL, ? in elisp) - (let ((beginning (point)) - (eol (point-at-eol))) - (let ((end-of-list-p (paredit-forward-sexps-to-kill beginning eol))) - ;; If we got to the end of the list and it's on the same line, - ;; move backward past the closing delimiter before killing. (This - ;; allows something like killing the whitespace in ( ).) - (if end-of-list-p (progn (up-list) (backward-char))) - (if kill-whole-line - (paredit-kill-sexps-on-whole-line beginning) - (kill-region beginning - ;; If all of the S-expressions were on one line, - ;; i.e. we're still on that line after moving past - ;; the last one, kill the whole line, including - ;; any comments; otherwise just kill to the end of - ;; the last S-expression we found. Be sure, - ;; though, not to kill any closing parentheses. - (if (and (not end-of-list-p) - (eq (point-at-eol) eol)) - eol - (point))))))) - -;;; Please do not try to understand this code unless you have a VERY -;;; good reason to do so. I gave up trying to figure it out well -;;; enough to explain it, long ago. - -(defun paredit-forward-sexps-to-kill (beginning eol) - (let ((end-of-list-p nil) - (firstp t)) - ;; Move to the end of the last S-expression that started on this - ;; line, or to the closing delimiter if the last S-expression in - ;; this list is on the line. - (catch 'return - (while t - ;; This and the `kill-whole-line' business below fix a bug that - ;; inhibited any S-expression at the very end of the buffer - ;; (with no trailing newline) from being deleted. It's a - ;; bizarre fix that I ought to document at some point, but I am - ;; too busy at the moment to do so. - (if (and kill-whole-line (eobp)) (throw 'return nil)) - (save-excursion - (paredit-handle-sexp-errors (forward-sexp) - (up-list) - (setq end-of-list-p (eq (point-at-eol) eol)) - (throw 'return nil)) - (if (or (and (not firstp) - (not kill-whole-line) - (eobp)) - (paredit-handle-sexp-errors - (progn (backward-sexp) nil) - t) - (not (eq (point-at-eol) eol))) - (throw 'return nil))) - (forward-sexp) - (if (and firstp - (not kill-whole-line) - (eobp)) - (throw 'return nil)) - (setq firstp nil))) - end-of-list-p)) - -(defun paredit-kill-sexps-on-whole-line (beginning) - (kill-region beginning - (or (save-excursion ; Delete trailing indentation... - (paredit-skip-whitespace t) - (and (not (eq (char-after) ?\; )) - (point))) - ;; ...or just use the point past the newline, if - ;; we encounter a comment. - (point-at-eol))) - (cond ((save-excursion (paredit-skip-whitespace nil (point-at-bol)) - (bolp)) - ;; Nothing but indentation before the point, so indent it. - (lisp-indent-line)) - ((eobp) nil) ; Protect the CHAR-SYNTAX below against NIL. - ;; Insert a space to avoid invalid joining if necessary. - ((let ((syn-before (char-syntax (char-before))) - (syn-after (char-syntax (char-after)))) - (or (and (eq syn-before ?\) ) ; Separate opposing - (eq syn-after ?\( )) ; parentheses, - (and (eq syn-before ?\" ) ; string delimiter - (eq syn-after ?\" )) ; pairs, - (and (memq syn-before '(?_ ?w)) ; or word or symbol - (memq syn-after '(?_ ?w))))) ; constituents. - (insert " ")))) - -;;;;; Killing Words - -;;; This is tricky and asymmetrical because backward parsing is -;;; extraordinarily difficult or impossible, so we have to implement -;;; killing in both directions by parsing forward. - -(defun paredit-forward-kill-word () - "Kill a word forward, skipping over intervening delimiters." - (interactive) - (let ((beginning (point))) - (skip-syntax-forward " -") - (let* ((parse-state (paredit-current-parse-state)) - (state (paredit-kill-word-state parse-state 'char-after))) - (while (not (or (eobp) - (eq ?w (char-syntax (char-after))))) - (setq parse-state - (progn (forward-char 1) (paredit-current-parse-state)) -;; (parse-partial-sexp (point) (1+ (point)) -;; nil nil parse-state) - ) - (let* ((old-state state) - (new-state - (paredit-kill-word-state parse-state 'char-after))) - (cond ((not (eq old-state new-state)) - (setq parse-state - (paredit-kill-word-hack old-state - new-state - parse-state)) - (setq state - (paredit-kill-word-state parse-state - 'char-after)) - (setq beginning (point))))))) - (goto-char beginning) - (kill-word 1))) - -(defun paredit-backward-kill-word () - "Kill a word backward, skipping over any intervening delimiters." - (interactive) - (if (not (or (bobp) - (eq (char-syntax (char-before)) ?w))) - (let ((end (point))) - (backward-word 1) - (forward-word 1) - (goto-char (min end (point))) - (let* ((parse-state (paredit-current-parse-state)) - (state - (paredit-kill-word-state parse-state 'char-before))) - (while (and (< (point) end) - (progn - (setq parse-state - (parse-partial-sexp (point) (1+ (point)) - nil nil parse-state)) - (or (eq state - (paredit-kill-word-state parse-state - 'char-before)) - (progn (backward-char 1) nil))))) - (if (and (eq state 'comment) - (eq ?\# (char-after (point))) - (eq ?\| (char-before (point)))) - (backward-char 1))))) - (backward-kill-word 1)) - -;;;;;; Word-Killing Auxiliaries - -(defun paredit-kill-word-state (parse-state adjacent-char-fn) - (cond ((paredit-in-comment-p parse-state) 'comment) - ((paredit-in-string-p parse-state) 'string) - ((memq (char-syntax (funcall adjacent-char-fn)) - '(?\( ?\) )) - 'delimiter) - (t 'other))) - -;;; This optionally advances the point past any comment delimiters that -;;; should probably not be touched, based on the last state change and -;;; the characters around the point. It returns a new parse state, -;;; starting from the PARSE-STATE parameter. - -(defun paredit-kill-word-hack (old-state new-state parse-state) - (cond ((and (not (eq old-state 'comment)) - (not (eq new-state 'comment)) - (not (paredit-in-string-escape-p)) - (eq ?\# (char-before)) - (eq ?\| (char-after))) - (forward-char 1) - (paredit-current-parse-state) -;; (parse-partial-sexp (point) (1+ (point)) -;; nil nil parse-state) - ) - ((and (not (eq old-state 'comment)) - (eq new-state 'comment) - (eq ?\; (char-before))) - (skip-chars-forward ";") - (paredit-current-parse-state) -;; (parse-partial-sexp (point) (save-excursion -;; (skip-chars-forward ";")) -;; nil nil parse-state) - ) - (t parse-state))) - -(defun paredit-copy-as-kill () - "Save in the kill ring the region that `paredit-kill' would kill." - (interactive) - (cond ((paredit-in-string-p) - (paredit-copy-as-kill-in-string)) - ((paredit-in-comment-p) - (copy-region-as-kill (point) (point-at-eol))) - ((save-excursion (paredit-skip-whitespace t (point-at-eol)) - (or (eolp) (eq (char-after) ?\; ))) - ;** Be careful about trailing backslashes. - (save-excursion - (if (paredit-in-char-p) - (backward-char)) - (copy-region-as-kill (point) (point-at-eol)))) - (t (paredit-copy-sexps-as-kill)))) - -(defun paredit-copy-as-kill-in-string () - (save-excursion - (if (paredit-in-string-escape-p) - (backward-char)) - (copy-region-as-kill (point) - (min (point-at-eol) - (cdr (paredit-string-start+end-points)))))) - -(defun paredit-copy-sexps-as-kill () - (save-excursion - (if (paredit-in-char-p) - (backward-char 2)) - (let ((beginning (point)) - (eol (point-at-eol))) - (let ((end-of-list-p (paredit-forward-sexps-to-kill beginning eol))) - (if end-of-list-p (progn (up-list) (backward-char))) - (copy-region-as-kill beginning - (cond (kill-whole-line - (or (save-excursion - (paredit-skip-whitespace t) - (and (not (eq (char-after) ?\; )) - (point))) - (point-at-eol))) - ((and (not end-of-list-p) - (eq (point-at-eol) eol)) - eol) - (t - (point)))))))) - -;;;; Deleting Regions - -(defun paredit-delete-region (start end) - "Delete the text between point and mark, like `delete-region'. -If that text is unbalanced, signal an error instead. -With a prefix argument, skip the balance check." - (interactive "r") - (if (and start end (not current-prefix-arg)) - (paredit-check-region-for-delete start end)) - (setq this-command 'delete-region) - (delete-region start end)) - -(defun paredit-kill-region (start end) - "Kill the text between point and mark, like `kill-region'. -If that text is unbalanced, signal an error instead. -With a prefix argument, skip the balance check." - (interactive "r") - (if (and start end (not current-prefix-arg)) - (paredit-check-region-for-delete start end)) - (setq this-command 'kill-region) - (kill-region start end)) - -(defun paredit-check-region-for-delete (start end) - "Signal an error deleting text between START and END is unsafe." - (save-excursion - (goto-char start) - (let* ((start-state (paredit-current-parse-state)) - (end-state (parse-partial-sexp start end nil nil start-state))) - (paredit-check-region-for-delete:depth start start-state end end-state) - (paredit-check-region-for-delete:string start start-state end end-state) - (paredit-check-region-for-delete:comment start start-state end end-state) - (paredit-check-region-for-delete:char-quote start start-state - end end-state)))) - -(defun paredit-check-region-for-delete:depth (start start-state end end-state) - (let ((start-depth (nth 0 start-state)) - (end-depth (nth 0 end-state))) - (if (not (= start-depth end-depth)) - (error "Mismatched parenthesis depth: %S at start, %S at end." - start-depth - end-depth)))) - -(defun paredit-check-region-for-delete:string (start start-state end end-state) - (let ((start-string-p (nth 3 start-state)) - (end-string-p (nth 3 end-state))) - (if (not (eq start-string-p end-string-p)) - (error "Mismatched string state: start %sin string, end %sin string." - (if start-string-p "" "not ") - (if end-string-p "" "not "))))) - -(defun paredit-check-region-for-delete:comment - (start start-state end end-state) - (let ((start-comment-state (nth 4 start-state)) - (end-comment-state (nth 4 end-state))) - (if (not (or (eq start-comment-state end-comment-state) - ;; If we are moving text into or out of a line - ;; comment, make sure that the text is balanced. (The - ;; comment state may be a number, not t or nil at all, - ;; for nestable comments, which are not handled by - ;; this heuristic (or any of paredit, really).) - (and (or (and (eq start-comment-state nil) - (eq end-comment-state t)) - (and (eq start-comment-state t) - (eq end-comment-state nil))) - (save-excursion - (goto-char end) - (paredit-region-ok-p (point) (point-at-eol)))))) - (error "Mismatched comment state: %s" - (cond ((and (integerp start-comment-state) - (integerp end-comment-state)) - (format "depth %S at start, depth %S at end." - start-comment-state - end-comment-state)) - ((integerp start-comment-state) - "start in nested comment, end otherwise.") - ((integerp end-comment-state) - "end in nested comment, start otherwise.") - (start-comment-state - "start in comment, end not in comment.") - (end-comment-state - "end in comment, start not in comment.") - (t - (format "start %S, end %S." - start-comment-state - end-comment-state))))))) - -(defun paredit-check-region-for-delete:char-quote - (start start-state end end-state) - (let ((start-char-quote (nth 5 start-state)) - (end-char-quote (nth 5 end-state))) - (if (not (eq start-char-quote end-char-quote)) - (let ((phrase "character quotation")) - (error "Mismatched %s: start %sin %s, end %sin %s." - phrase - (if start-char-quote "" "not ") - phrase - (if end-char-quote "" "not ") - phrase))))) - -;;;; Point Motion - -(eval-and-compile - (defmacro defun-motion (name bvl doc &rest body) - `(defun ,name ,bvl - ,doc - ,(xcond ((paredit-xemacs-p) - '(interactive "_")) - ((paredit-gnu-emacs-p) - ;++ Not sure this is sufficient for the `^'. - (if (fboundp 'handle-shift-selection) - '(interactive "^p") - '(interactive "p")))) - ,@body))) - -(defun-motion paredit-forward (&optional arg) - "Move forward an S-expression, or up an S-expression forward. -If there are no more S-expressions in this one before the closing - delimiter, move past that closing delimiter; otherwise, move forward - past the S-expression following the point." - (let ((n (or arg 1))) - (cond ((< 0 n) (dotimes (i n) (paredit-move-forward))) - ((< n 0) (dotimes (i (- n)) (paredit-move-backward)))))) - -(defun-motion paredit-backward (&optional arg) - "Move backward an S-expression, or up an S-expression backward. -If there are no more S-expressions in this one before the opening - delimiter, move past that opening delimiter backward; otherwise, move - move backward past the S-expression preceding the point." - (let ((n (or arg 1))) - (cond ((< 0 n) (dotimes (i n) (paredit-move-backward))) - ((< n 0) (dotimes (i (- n)) (paredit-move-forward)))))) - -(defun paredit-move-forward () - (cond ((paredit-in-string-p) - (let ((end (paredit-enclosing-string-end))) - ;; `forward-sexp' and `up-list' may move into the next string - ;; in the buffer. Don't do that; move out of the current one. - (if (paredit-handle-sexp-errors - (progn (paredit-handle-sexp-errors (forward-sexp) - (up-list)) - (<= end (point))) - t) - (goto-char end)))) - ((paredit-in-char-p) - (forward-char)) - (t - (paredit-handle-sexp-errors (forward-sexp) - (up-list))))) - -(defun paredit-move-backward () - (cond ((paredit-in-string-p) - (let ((start (paredit-enclosing-string-start))) - (if (paredit-handle-sexp-errors - (progn (paredit-handle-sexp-errors (backward-sexp) - (backward-up-list)) - (<= (point) start)) - t) - (goto-char start)))) - ((paredit-in-char-p) - ;++ Corner case: a buffer of `\|x'. What to do? - (backward-char 2)) - (t - (paredit-handle-sexp-errors (backward-sexp) - (backward-up-list))))) - -;;;; Window Positioning - -(defalias 'paredit-recentre-on-sexp 'paredit-recenter-on-sexp) - -(defun paredit-recenter-on-sexp (&optional n) - "Recenter the screen on the S-expression following the point. -With a prefix argument N, encompass all N S-expressions forward." - (interactive "P") - (let* ((p (point)) - (end-point (progn (forward-sexp n) (point))) - (start-point (progn (goto-char end-point) (backward-sexp n) (point)))) - ;; Point is at beginning of first S-expression. - (let ((p-visible nil) (start-visible nil)) - (save-excursion - (forward-line (/ (count-lines start-point end-point) 2)) - (recenter) - (setq p-visible (pos-visible-in-window-p p)) - (setq start-visible (pos-visible-in-window-p start-point))) - (cond ((not start-visible) - ;; Implies (not p-visible). Put the start at the top of - ;; the screen. - (recenter 0)) - (p-visible - ;; Go back to p if we can. - (goto-char p)))))) - -(defun paredit-recenter-on-defun () - "Recenter the screen on the definition at point." - (interactive) - (save-excursion - (beginning-of-defun) - (paredit-recenter-on-sexp))) - -(defun paredit-focus-on-defun () - "Moves display to the top of the definition at point." - (interactive) - (beginning-of-defun) - (recenter 0)) - -;;;; Generalized Upward/Downward Motion - -(defun paredit-up/down (n vertical-direction) - (let ((horizontal-direction (if (< 0 n) +1 -1))) - (while (/= n 0) - (goto-char - (paredit-next-up/down-point horizontal-direction vertical-direction)) - (setq n (- n horizontal-direction))))) - -(defun paredit-next-up/down-point (horizontal-direction vertical-direction) - (let ((state (paredit-current-parse-state)) - (scan-lists - (lambda () - (scan-lists (point) horizontal-direction vertical-direction)))) - (cond ((paredit-in-string-p state) - (let ((start+end (paredit-string-start+end-points state))) - (if (< 0 vertical-direction) - (if (< 0 horizontal-direction) - (+ 1 (cdr start+end)) - (car start+end)) - ;; We could let the user try to descend into lists - ;; within the string, but that would be asymmetric - ;; with the up case, which rises out of the whole - ;; string and not just out of a list within the - ;; string, so this case will just be an error. - (error "Can't descend further into string.")))) - ((< 0 vertical-direction) - ;; When moving up, just try to rise up out of the list. - (or (funcall scan-lists) - (buffer-end horizontal-direction))) - ((< vertical-direction 0) - ;; When moving down, look for a string closer than a list, - ;; and use that if we find it. - (let* ((list-start - (paredit-handle-sexp-errors (funcall scan-lists) nil)) - (string-start - (paredit-find-next-string-start horizontal-direction - list-start))) - (if (and string-start list-start) - (if (< 0 horizontal-direction) - (min string-start list-start) - (max string-start list-start)) - (or string-start - ;; Scan again: this is a kludgey way to report the - ;; error if there really was one. - (funcall scan-lists) - (buffer-end horizontal-direction))))) - (t - (error "Vertical direction must be nonzero in `%s'." - 'paredit-up/down))))) - -(defun paredit-find-next-string-start (horizontal-direction limit) - (let ((buffer-limit-p (if (< 0 horizontal-direction) 'eobp 'bobp)) - (next-char (if (< 0 horizontal-direction) 'char-after 'char-before)) - (pastp (if (< 0 horizontal-direction) '> '<))) - (paredit-handle-sexp-errors - (save-excursion - (catch 'exit - (while t - (if (or (funcall buffer-limit-p) - (and limit (funcall pastp (point) limit))) - (throw 'exit nil)) - (forward-sexp horizontal-direction) - (save-excursion - (backward-sexp horizontal-direction) - (if (eq ?\" (char-syntax (funcall next-char))) - (throw 'exit (+ (point) horizontal-direction))))))) - nil))) - -(defun-motion paredit-forward-down (&optional argument) - "Move forward down into a list. -With a positive argument, move forward down that many levels. -With a negative argument, move backward down that many levels." - (paredit-up/down (or argument +1) -1)) - -(defun-motion paredit-backward-up (&optional argument) - "Move backward up out of the enclosing list. -With a positive argument, move backward up that many levels. -With a negative argument, move forward up that many levels. -If in a string initially, that counts as one level." - (paredit-up/down (- 0 (or argument +1)) +1)) - -(defun-motion paredit-forward-up (&optional argument) - "Move forward up out of the enclosing list. -With a positive argument, move forward up that many levels. -With a negative argument, move backward up that many levels. -If in a string initially, that counts as one level." - (paredit-up/down (or argument +1) +1)) - -(defun-motion paredit-backward-down (&optional argument) - "Move backward down into a list. -With a positive argument, move backward down that many levels. -With a negative argument, move forward down that many levels." - (paredit-up/down (- 0 (or argument +1)) -1)) - -;;;; Depth-Changing Commands: Wrapping, Splicing, & Raising - -(defun paredit-wrap-sexp (&optional argument open close) - "Wrap the following S-expression. -If a `C-u' prefix argument is given, wrap all S-expressions following - the point until the end of the buffer or of the enclosing list. -If a numeric prefix argument N is given, wrap N S-expressions. -Automatically indent the newly wrapped S-expression. -As a special case, if the point is at the end of a list, simply insert - a parenthesis pair, rather than inserting a lone opening delimiter - and then signalling an error, in the interest of preserving - structure. -By default OPEN and CLOSE are round delimiters." - (interactive "P") - (paredit-lose-if-not-in-sexp 'paredit-wrap-sexp) - (let ((open (or open ?\( )) - (close (or close ?\) ))) - (paredit-handle-sexp-errors - ((lambda (n) (paredit-insert-pair n open close 'goto-char)) - (cond ((integerp argument) argument) - ((consp argument) (paredit-count-sexps-forward)) - ((paredit-region-active-p) nil) - (t 1))) - (insert close) - (backward-char))) - (save-excursion (backward-up-list) (indent-sexp))) - -(defun paredit-yank-pop (&optional argument) - "Replace just-yanked text with the next item in the kill ring. -If this command follows a `yank', just run `yank-pop'. -If this command follows a `paredit-wrap-sexp', or any other paredit - wrapping command (see `paredit-wrap-commands'), run `yank' and - reindent the enclosing S-expression. -If this command is repeated, run `yank-pop' and reindent the enclosing - S-expression. - -The argument is passed on to `yank' or `yank-pop'; see their - documentation for details." - (interactive "*p") - (cond ((eq last-command 'yank) - (yank-pop argument)) - ((memq last-command paredit-wrap-commands) - (yank argument) - ;; `yank' futzes with `this-command'. - (setq this-command 'paredit-yank-pop) - (save-excursion (backward-up-list) (indent-sexp))) - ((eq last-command 'paredit-yank-pop) - ;; Pretend we just did a `yank', so that we can use - ;; `yank-pop' without duplicating its definition. - (setq last-command 'yank) - (yank-pop argument) - ;; Return to our original state. - (setq last-command 'paredit-yank-pop) - (setq this-command 'paredit-yank-pop) - (save-excursion (backward-up-list) (indent-sexp))) - (t (error "Last command was not a yank or a wrap: %s" last-command)))) - -(defun paredit-splice-sexp (&optional argument) - "Splice the list that the point is on by removing its delimiters. -With a prefix argument as in `C-u', kill all S-expressions backward in - the current list before splicing all S-expressions forward into the - enclosing list. -With two prefix arguments as in `C-u C-u', kill all S-expressions - forward in the current list before splicing all S-expressions - backward into the enclosing list. -With a numerical prefix argument N, kill N S-expressions backward in - the current list before splicing the remaining S-expressions into the - enclosing list. If N is negative, kill forward. -Inside a string, unescape all backslashes, or signal an error if doing - so would invalidate the buffer's structure." - (interactive "P") - (if (paredit-in-string-p) - (paredit-splice-string argument) - (if (paredit-in-comment-p) - (error "Can't splice comment.")) - (paredit-handle-sexp-errors (paredit-enclosing-list-start) - (error "Can't splice top level.")) - (paredit-kill-surrounding-sexps-for-splice argument) - (let ((delete-start (paredit-enclosing-list-start)) - (delete-end - (let ((limit - (save-excursion - (paredit-ignore-sexp-errors (forward-sexp) (backward-sexp)) - (point)))) - (save-excursion - (backward-up-list) - (forward-char +1) - (paredit-skip-whitespace t limit) - (point))))) - (let ((end-marker (make-marker))) - (save-excursion - (up-list) - (delete-char -1) - (set-marker end-marker (point))) - (delete-region delete-start delete-end) - (paredit-splice-reindent delete-start (marker-position end-marker)))))) - -(defun paredit-splice-reindent (start end) - (paredit-preserving-column - ;; If we changed the first subform of the enclosing list, we must - ;; reindent the whole enclosing list. - (if (paredit-handle-sexp-errors - (save-excursion - (backward-up-list) - (down-list) - (paredit-ignore-sexp-errors (forward-sexp)) - (< start (point))) - nil) - (save-excursion (backward-up-list) (indent-sexp)) - (paredit-indent-region start end)))) - -(defun paredit-kill-surrounding-sexps-for-splice (argument) - (cond ((or (paredit-in-string-p) - (paredit-in-comment-p)) - (error "Invalid context for splicing S-expressions.")) - ((or (not argument) (eq argument 0)) nil) - ((or (numberp argument) (eq argument '-)) - ;; Kill S-expressions before/after the point by saving the - ;; point, moving across them, and killing the region. - (let* ((argument (if (eq argument '-) -1 argument)) - (saved (paredit-point-at-sexp-boundary (- argument)))) - (goto-char saved) - (paredit-ignore-sexp-errors (backward-sexp argument)) - (paredit-hack-kill-region saved (point)))) - ((consp argument) - (let ((v (car argument))) - (if (= v 4) ;One `C-u'. - ;; Move backward until we hit the open paren; then - ;; kill that selected region. - (let ((end (point))) - (paredit-ignore-sexp-errors - (while (not (bobp)) - (backward-sexp))) - (paredit-hack-kill-region (point) end)) - ;; Move forward until we hit the close paren; then - ;; kill that selected region. - (let ((beginning (point))) - (paredit-ignore-sexp-errors - (while (not (eobp)) - (forward-sexp))) - (paredit-hack-kill-region beginning (point)))))) - (t (error "Bizarre prefix argument `%s'." argument)))) - -(defun paredit-splice-sexp-killing-backward (&optional n) - "Splice the list the point is on by removing its delimiters, and - also kill all S-expressions before the point in the current list. -With a prefix argument N, kill only the preceding N S-expressions." - (interactive "P") - (paredit-splice-sexp (if n - (prefix-numeric-value n) - '(4)))) - -(defun paredit-splice-sexp-killing-forward (&optional n) - "Splice the list the point is on by removing its delimiters, and - also kill all S-expressions after the point in the current list. -With a prefix argument N, kill only the following N S-expressions." - (interactive "P") - (paredit-splice-sexp (if n - (- (prefix-numeric-value n)) - '(16)))) - -(defun paredit-raise-sexp (&optional argument) - "Raise the following S-expression in a tree, deleting its siblings. -With a prefix argument N, raise the following N S-expressions. If N - is negative, raise the preceding N S-expressions. -If the point is on an S-expression, such as a string or a symbol, not - between them, that S-expression is considered to follow the point." - (interactive "P") - (save-excursion - (cond ((paredit-in-string-p) - (goto-char (car (paredit-string-start+end-points)))) - ((paredit-in-char-p) - (backward-sexp)) - ((paredit-in-comment-p) - (error "No S-expression to raise in comment."))) - ;; Select the S-expressions we want to raise in a buffer substring. - (let* ((n (prefix-numeric-value argument)) - (bound (scan-sexps (point) n)) - (sexps - (if (< n 0) - (buffer-substring bound (paredit-point-at-sexp-end)) - (buffer-substring (paredit-point-at-sexp-start) bound)))) - ;; Move up to the list we're raising those S-expressions out of and - ;; delete it. - (backward-up-list) - (delete-region (point) (scan-sexps (point) 1)) - (let* ((indent-start (point)) - (indent-end (save-excursion (insert sexps) (point)))) - ;; If the expression spans multiple lines, its indentation is - ;; probably broken, so reindent it -- but don't reindent - ;; anything that we didn't touch outside the expression. - ;; - ;; XXX What if the *column* of the starting point was preserved - ;; too? Should we avoid reindenting in that case? - (if (not (eq (save-excursion (goto-char indent-start) (point-at-eol)) - (save-excursion (goto-char indent-end) (point-at-eol)))) - (indent-region indent-start indent-end nil)))))) - -;;; The effects of convolution on the surrounding whitespace are pretty -;;; random. If you have better suggestions, please let me know. - -(defun paredit-convolute-sexp (&optional n) - "Convolute S-expressions. -Save the S-expressions preceding point and delete them. -Splice the S-expressions following point. -Wrap the enclosing list in a new list prefixed by the saved text. -With a prefix argument N, move up N lists before wrapping." - (interactive "p") - (paredit-lose-if-not-in-sexp 'paredit-convolute-sexp) - ;; Make sure we can move up before destroying anything. - (save-excursion (backward-up-list n) (backward-up-list)) - (let (open close) ;++ Is this a good idea? - (let ((prefix - (let ((end (point))) - (paredit-ignore-sexp-errors - (while (not (bobp)) (backward-sexp))) - (prog1 (buffer-substring (point) end) - (backward-up-list) - (save-excursion (forward-sexp) - (setq close (char-before)) - (delete-char -1)) - (setq open (char-after)) - (delete-region (point) end) - ;; I'm not sure this makes sense... - (if (not (eolp)) (just-one-space)))))) - (backward-up-list n) - (paredit-insert-pair 1 open close 'goto-char) - (insert prefix) - ;; I'm not sure this makes sense either... - (if (not (eolp)) (just-one-space)) - (save-excursion - (backward-up-list) - (paredit-ignore-sexp-errors (indent-sexp)))))) - -(defun paredit-splice-string (argument) - (let ((original-point (point)) - (start+end (paredit-string-start+end-points))) - (let ((start (car start+end)) - (end (cdr start+end))) - ;; START and END both lie before the respective quote - ;; characters, which we want to delete; thus we increment START - ;; by one to extract the string, and we increment END by one to - ;; delete the string. - (let* ((escaped-string - (cond ((not (consp argument)) - (buffer-substring (1+ start) end)) - ((= 4 (car argument)) - (buffer-substring original-point end)) - (t - (buffer-substring (1+ start) original-point)))) - (unescaped-string - (paredit-unescape-string escaped-string))) - (if (not unescaped-string) - (error "Unspliceable string.") - (save-excursion - (goto-char start) - (delete-region start (1+ end)) - (insert unescaped-string)) - (if (not (and (consp argument) - (= 4 (car argument)))) - (goto-char (- original-point 1)))))))) - -(defun paredit-unescape-string (string) - (with-temp-buffer - (insert string) - (goto-char (point-min)) - (while (and (not (eobp)) - ;; nil -> no bound; t -> no errors. - (search-forward "\\" nil t)) - (delete-char -1) - (forward-char)) - (paredit-handle-sexp-errors - (progn (scan-sexps (point-min) (point-max)) - (buffer-string)) - nil))) - -;;;; Slurpage & Barfage - -(defun paredit-forward-slurp-sexp (&optional argument) - "Add the S-expression following the current list into that list - by moving the closing delimiter. -Automatically reindent the newly slurped S-expression with respect to - its new enclosing form. -If in a string, move the opening double-quote forward by one - S-expression and escape any intervening characters as necessary, - without altering any indentation or formatting." - (interactive "P") - (save-excursion - (cond ((paredit-in-comment-p) - (error "Invalid context for slurping S-expressions.")) - ((numberp argument) - (if (< argument 0) - (paredit-forward-barf-sexp (- 0 argument)) - (while (< 0 argument) - (paredit-forward-slurp-sexp) - (setq argument (- argument 1))))) - ((paredit-in-string-p) - ;; If there is anything to slurp into the string, take that. - ;; Otherwise, try to slurp into the enclosing list. - (if (save-excursion - (goto-char (paredit-enclosing-string-end)) - (paredit-handle-sexp-errors (progn (forward-sexp) nil) - t)) - (progn - (goto-char (paredit-enclosing-string-end)) - (paredit-forward-slurp-into-list argument)) - (paredit-forward-slurp-into-string argument))) - (t - (paredit-forward-slurp-into-list argument))))) - -(defun paredit-forward-slurp-into-list (&optional argument) - (let ((nestedp nil)) - (save-excursion - (up-list) ; Up to the end of the list to - (let ((close (char-before))) ; save and delete the closing - (delete-char -1) ; delimiter. - (let ((start (point))) - (catch 'return ; Go to the end of the desired - (while t ; S-expression, going up a - (paredit-handle-sexp-errors ; list if it's not in this, - (progn (forward-sexp) - (if argument - (paredit-ignore-sexp-errors - (while (not (eobp)) - (forward-sexp)))) - (throw 'return nil)) - (setq nestedp t) - (up-list) - (setq close ; adjusting for mixed - (prog1 (char-before) ; delimiters as necessary, - (delete-char -1) - (insert close)))))) - (insert close) ; to insert that delimiter. - (indent-region start (point) nil)))) - (if (and (not nestedp) - (eq (save-excursion (paredit-skip-whitespace nil) (point)) - (save-excursion (backward-up-list) (forward-char) (point))) - (eq (save-excursion (forward-sexp) (backward-sexp) (point)) - (save-excursion (paredit-skip-whitespace t) (point)))) - (delete-region (save-excursion (paredit-skip-whitespace nil) (point)) - (save-excursion (paredit-skip-whitespace t) (point)))))) - -(defun paredit-forward-slurp-into-string (&optional argument) - (let ((start (paredit-enclosing-string-start)) - (end (paredit-enclosing-string-end))) - (goto-char end) - ;; Signal any errors that we might get first, before mucking with - ;; the buffer's contents. - (save-excursion (forward-sexp)) - (let ((close (char-before))) - ;; Skip intervening whitespace if we're slurping into an empty - ;; string. XXX What about nonempty strings? - (if (and (= (+ start 2) end) - (eq (save-excursion (paredit-skip-whitespace t) (point)) - (save-excursion (forward-sexp) (backward-sexp) (point)))) - (delete-region (- (point) 1) - (save-excursion (paredit-skip-whitespace t) (point))) - (delete-char -1)) - (paredit-forward-for-quote - (save-excursion - (forward-sexp) - (if argument - (while (paredit-handle-sexp-errors (progn (forward-sexp) t) nil))) - (point))) - (insert close)))) - -(defun paredit-forward-barf-sexp (&optional argument) - "Remove the last S-expression in the current list from that list - by moving the closing delimiter. -Automatically reindent the newly barfed S-expression with respect to - its new enclosing form." - (interactive "P") - (paredit-lose-if-not-in-sexp 'paredit-forward-barf-sexp) - (if (and (numberp argument) (< argument 0)) - (paredit-forward-slurp-sexp (- 0 argument)) - (let ((start (point)) (end nil)) - (save-excursion - (up-list) ; Up to the end of the list to - (let ((close (char-before))) ; save and delete the closing - (delete-char -1) ; delimiter. - (setq end (point)) - (paredit-ignore-sexp-errors ; Go back to where we want to - (if (or (not argument) ; insert the delimiter. - (numberp argument)) - (backward-sexp argument) - (while (paredit-handle-sexp-errors - (save-excursion (backward-sexp) (<= start (point))) - nil) - (backward-sexp)))) - (paredit-skip-whitespace nil) ; Skip leading whitespace. - (cond ((bobp) - ;++ We'll have deleted the close, but there's no open. - ;++ Is that OK? - (error "Barfing all subexpressions with no open-paren?")) - ((paredit-in-comment-p) ; Don't put the close-paren in - (newline))) ; a comment. - (insert close)) - ;; Reindent all of the newly barfed S-expressions. Start at the - ;; start of the first barfed S-expression, not at the close we - ;; just inserted. - (forward-sexp) - (backward-sexp) - (if (or (not argument) (numberp argument)) - (paredit-forward-and-indent argument) - (indent-region (point) end)))))) - -(defun paredit-backward-slurp-sexp (&optional argument) - "Add the S-expression preceding the current list into that list - by moving the closing delimiter. -Automatically reindent the whole form into which new S-expression was - slurped. -If in a string, move the opening double-quote backward by one - S-expression and escape any intervening characters as necessary, - without altering any indentation or formatting." - (interactive "P") - (save-excursion - (cond ((paredit-in-comment-p) - (error "Invalid context for slurping S-expressions.")) - ((numberp argument) - (if (< argument 0) - (paredit-backward-barf-sexp (- 0 argument)) - (while (< 0 argument) - (paredit-backward-slurp-sexp) - (setq argument (- argument 1))))) - ((paredit-in-string-p) - ;; If there is anything to slurp into the string, take that. - ;; Otherwise, try to slurp into the enclosing list. - (if (save-excursion - (goto-char (paredit-enclosing-string-start)) - (paredit-handle-sexp-errors (progn (backward-sexp) nil) - t)) - (progn - (goto-char (paredit-enclosing-string-start)) - (paredit-backward-slurp-into-list argument)) - (paredit-backward-slurp-into-string argument))) - (t - (paredit-backward-slurp-into-list argument))))) - -(defun paredit-backward-slurp-into-list (&optional argument) - (let ((nestedp nil)) - (save-excursion - (backward-up-list) - (let ((open (char-after))) - (delete-char +1) - (catch 'return - (while t - (paredit-handle-sexp-errors - (progn (backward-sexp) - (if argument - (paredit-ignore-sexp-errors - (while (not (bobp)) - (backward-sexp)))) - (throw 'return nil)) - (setq nestedp t) - (backward-up-list) - (setq open - (prog1 (char-after) - (save-excursion (insert open) (delete-char +1))))))) - (insert open)) - ;; Reindent the line at the beginning of wherever we inserted the - ;; opening delimiter, and then indent the whole S-expression. - (backward-up-list) - (lisp-indent-line) - (indent-sexp)) - ;; If we slurped into an empty list, don't leave dangling space: - ;; (foo |). - (if (and (not nestedp) - (eq (save-excursion (paredit-skip-whitespace nil) (point)) - (save-excursion (backward-sexp) (forward-sexp) (point))) - (eq (save-excursion (up-list) (backward-char) (point)) - (save-excursion (paredit-skip-whitespace t) (point)))) - (delete-region (save-excursion (paredit-skip-whitespace nil) (point)) - (save-excursion (paredit-skip-whitespace t) (point)))))) - -(defun paredit-backward-slurp-into-string (&optional argument) - (let ((start (paredit-enclosing-string-start)) - (end (paredit-enclosing-string-end))) - (goto-char start) - ;; Signal any errors that we might get first, before mucking with - ;; the buffer's contents. - (save-excursion (backward-sexp)) - (let ((open (char-after)) - (target (point))) - ;; Skip intervening whitespace if we're slurping into an empty - ;; string. XXX What about nonempty strings? - (if (and (= (+ start 2) end) - (eq (save-excursion (paredit-skip-whitespace nil) (point)) - (save-excursion (backward-sexp) (forward-sexp) (point)))) - (delete-region (save-excursion (paredit-skip-whitespace nil) (point)) - (+ (point) 1)) - (delete-char +1)) - (backward-sexp) - (if argument - (paredit-ignore-sexp-errors - (while (not (bobp)) - (backward-sexp)))) - (insert open) - (paredit-forward-for-quote target)))) - -(defun paredit-backward-barf-sexp (&optional argument) - "Remove the first S-expression in the current list from that list - by moving the closing delimiter. -Automatically reindent the barfed S-expression and the form from which - it was barfed." - (interactive "P") - (paredit-lose-if-not-in-sexp 'paredit-backward-barf-sexp) - (if (and (numberp argument) (< argument 0)) - (paredit-backward-slurp-sexp (- 0 argument)) - (let ((end (make-marker))) - (set-marker end (point)) - (save-excursion - (backward-up-list) - (let ((open (char-after))) - (delete-char +1) - (paredit-ignore-sexp-errors - (paredit-forward-and-indent - (if (or (not argument) (numberp argument)) - argument - (let ((n 0)) - (save-excursion - (while (paredit-handle-sexp-errors - (save-excursion - (forward-sexp) - (<= (point) end)) - nil) - (forward-sexp) - (setq n (+ n 1)))) - n)))) - (while (progn (paredit-skip-whitespace t) (eq (char-after) ?\; )) - (forward-line 1)) - (if (eobp) - ;++ We'll have deleted the close, but there's no open. - ;++ Is that OK? - (error "Barfing all subexpressions with no close-paren?")) - ;** Don't use `insert' here. Consider, e.g., barfing from - ;** (foo|) - ;** and how `save-excursion' works. - (insert-before-markers open)) - (backward-up-list) - (lisp-indent-line) - (indent-sexp))))) - -;;;; Splitting & Joining - -(defun paredit-split-sexp () - "Split the list or string the point is on into two." - (interactive) - (cond ((paredit-in-string-p) - (insert "\"") - (save-excursion (insert " \""))) - ((or (paredit-in-comment-p) - (paredit-in-char-p)) - (error "Invalid context for splitting S-expression.")) - (t - (let ((open (save-excursion (backward-up-list) (char-after))) - (close (save-excursion (up-list) (char-before)))) - (delete-horizontal-space) - (insert close) - (save-excursion - (insert ?\ ) - (insert open) - (backward-char) - (indent-sexp)))))) - -(defun paredit-join-sexps () - "Join the S-expressions adjacent on either side of the point. -Both must be lists, strings, or atoms; error if there is a mismatch." - (interactive) - (cond ((paredit-in-comment-p) (error "Can't join S-expressions in comment.")) - ((paredit-in-string-p) (error "Nothing to join in a string.")) - ((paredit-in-char-p) (error "Can't join characters."))) - (let ((left-point (paredit-point-at-sexp-end)) - (right-point (paredit-point-at-sexp-start))) - (let ((left-char (char-before left-point)) - (right-char (char-after right-point))) - (let ((left-syntax (char-syntax left-char)) - (right-syntax (char-syntax right-char))) - (cond ((< right-point left-point) - (error "Can't join a datum with itself.")) - ((and (eq left-syntax ?\) ) - (eq right-syntax ?\( ) - (eq left-char (matching-paren right-char)) - (eq right-char (matching-paren left-char))) - (paredit-join-lists-internal left-point right-point) - (paredit-preserving-column - (save-excursion - (backward-up-list) - (indent-sexp)))) - ((and (eq left-syntax ?\" ) - (eq right-syntax ?\" )) - ;; Delete any intermediate formatting. - (delete-region (1- left-point) (1+ right-point))) - ((and (memq left-syntax '(?w ?_)) ; Word or symbol - (memq right-syntax '(?w ?_))) - (delete-region left-point right-point)) - (t (error "Mismatched S-expressions to join."))))))) - -(defun paredit-join-lists-internal (left-point right-point) - (save-excursion - ;; Leave intermediate formatting alone. - (goto-char right-point) - (delete-char +1) - (goto-char left-point) - (delete-char -1) - ;; Kludge: Add an extra space in several conditions. - (if (or - ;; (foo)| ;x\n(bar) => (foo | ;x\nbar), not (foo| ;x\nbar). - (and (not (eolp)) - (save-excursion - (paredit-skip-whitespace t (point-at-eol)) - (eq (char-after) ?\;))) - ;; (foo)|(bar) => (foo| bar), not (foo|bar). - (and (= left-point right-point) - (not (or (eq ?\ (char-syntax (char-before))) - (eq ?\ (char-syntax (char-after))))))) - (insert ?\ )))) - -;++ How ought paredit-join to handle comments intervening symbols or strings? -;++ Idea: -;++ -;++ "foo" | ;bar -;++ "baz" ;quux -;++ -;++ => -;++ -;++ "foo|baz" ;bar -;++ ;quux -;++ -;++ The point should stay where it is relative to the comments, and the -;++ the comments' columns should all be preserved, perhaps. Hmmmm... -;++ What about this? -;++ -;++ "foo" ;bar -;++ | ;baz -;++ "quux" ;zot - -;++ Should rename: -;++ paredit-point-at-sexp-start -> paredit-start-of-sexp-after-point -;++ paredit-point-at-sexp-end -> paredit-end-of-sexp-before-point - -;;;; Variations on the Lurid Theme - -;;; I haven't the imagination to concoct clever names for these. - -(defun paredit-add-to-previous-list () - "Add the S-expression following point to the list preceding point." - (interactive) - (paredit-lose-if-not-in-sexp 'paredit-add-to-previous-list) - (save-excursion - (down-list -1) ;++ backward-down-list... - (paredit-forward-slurp-sexp))) - -(defun paredit-add-to-next-list () - "Add the S-expression preceding point to the list following point. -If no S-expression precedes point, move up the tree until one does." - (interactive) - (paredit-lose-if-not-in-sexp 'paredit-add-to-next-list) - (save-excursion - (down-list) - (paredit-backward-slurp-sexp))) - -(defun paredit-join-with-previous-list () - "Join the list the point is on with the previous list in the buffer." - (interactive) - (paredit-lose-if-not-in-sexp 'paredit-join-with-previous-list) - (save-excursion - (while (paredit-handle-sexp-errors (save-excursion (backward-sexp) nil) - (backward-up-list) - t)) - (paredit-join-sexps))) - -(defun paredit-join-with-next-list () - "Join the list the point is on with the next list in the buffer." - (interactive) - (paredit-lose-if-not-in-sexp 'paredit-join-with-next-list) - (save-excursion - (while (paredit-handle-sexp-errors (save-excursion (forward-sexp) nil) - (up-list) - t)) - (paredit-join-sexps))) - -;;;; Utilities - -(defun paredit-in-string-escape-p () - "True if the point is on a character escape of a string. -This is true only if the character is preceded by an odd number of - backslashes. -This assumes that `paredit-in-string-p' has already returned true." - (let ((oddp nil)) - (save-excursion - (while (eq (char-before) ?\\ ) - (setq oddp (not oddp)) - (backward-char))) - oddp)) - -(defun paredit-in-char-p (&optional position) - "True if point is on a character escape outside a string." - (save-excursion - (goto-char (or position (point))) - (paredit-in-string-escape-p))) - -(defun paredit-skip-whitespace (trailing-p &optional limit) - "Skip past any whitespace, or until the point LIMIT is reached. -If TRAILING-P is nil, skip leading whitespace; otherwise, skip trailing - whitespace." - (funcall (if trailing-p 'skip-chars-forward 'skip-chars-backward) - " \t\n " ; This should skip using the syntax table, but LF - limit)) ; is a comment end, not newline, in Lisp mode. - -(defalias 'paredit-region-active-p - (xcond ((paredit-xemacs-p) 'region-active-p) - ((paredit-gnu-emacs-p) - (lambda () - (and mark-active transient-mark-mode))))) - -(defun paredit-hack-kill-region (start end) - "Kill the region between START and END. -Do not append to any current kill, and - do not let the next kill append to this one." - (interactive "r") ;Eh, why not? - ;; KILL-REGION sets THIS-COMMAND to tell the next kill that the last - ;; command was a kill. It also checks LAST-COMMAND to see whether it - ;; should append. If we bind these locally, any modifications to - ;; THIS-COMMAND will be masked, and it will not see LAST-COMMAND to - ;; indicate that it should append. - (let ((this-command nil) - (last-command nil)) - (kill-region start end))) - -;;;;; Reindentation utilities - -;++ Should `paredit-indent-sexps' and `paredit-forward-and-indent' use -;++ `paredit-indent-region' rather than `indent-region'? - -(defun paredit-indent-sexps () - "If in a list, indent all following S-expressions in the list." - (let* ((start (point)) - (end (paredit-handle-sexp-errors (progn (up-list) (point)) nil))) - (if end - (indent-region start end nil)))) - -(defun paredit-forward-and-indent (&optional n) - "Move forward by N S-expressions, indenting them with `indent-region'." - (let ((start (point))) - (forward-sexp n) - (indent-region start (point) nil))) - -(defun paredit-indent-region (start end) - "Indent the region from START to END. -Don't reindent the line starting at START, however." - (if (not (<= start end)) - (error "Incorrectly related points: %S, %S" start end)) - (save-excursion - (goto-char start) - (let ((bol (point-at-bol))) - ;; Skip all S-expressions that end on the starting line, but - ;; don't go past `end'. - (if (and (save-excursion (goto-char end) (not (eq bol (point-at-bol)))) - (paredit-handle-sexp-errors - (catch 'exit - (while t - (save-excursion - (forward-sexp) - (if (not (eq bol (point-at-bol))) - (throw 'exit t)) - (if (not (< (point) end)) - (throw 'exit nil))) - (forward-sexp))) - nil)) - (progn - ;; Point is still on the same line, but precedes an - ;; S-expression that ends on a different line. - (if (not (eq bol (point-at-bol))) - (error "Internal error -- we moved forward a line!")) - (goto-char (+ 1 (point-at-eol))) - (if (not (<= (point) end)) - (error "Internal error -- we frobnitzed the garfnut!")) - (indent-region (point) end nil)))))) - -;;;;; S-expression Parsing Utilities - -;++ These routines redundantly traverse S-expressions a great deal. -;++ If performance issues arise, this whole section will probably have -;++ to be refactored to preserve the state longer, like paredit.scm -;++ does, rather than to traverse the definition N times for every key -;++ stroke as it presently does. - -(defun paredit-current-parse-state () - "Return parse state of point from beginning of defun." - (let ((point (point))) - (beginning-of-defun) - ;; Calling PARSE-PARTIAL-SEXP will advance the point to its second - ;; argument (unless parsing stops due to an error, but we assume it - ;; won't in paredit-mode). - (parse-partial-sexp (point) point))) - -(defun paredit-in-string-p (&optional state) - "True if the parse state is within a double-quote-delimited string. -If no parse state is supplied, compute one from the beginning of the - defun to the point." - ;; 3. non-nil if inside a string (the terminator character, really) - (and (nth 3 (or state (paredit-current-parse-state))) - t)) - -(defun paredit-string-start+end-points (&optional state) - "Return a cons of the points of open and close quotes of the string. -The string is determined from the parse state STATE, or the parse state - from the beginning of the defun to the point. -This assumes that `paredit-in-string-p' has already returned true, i.e. - that the point is already within a string." - (save-excursion - ;; 8. character address of start of comment or string; nil if not - ;; in one - (let ((start (nth 8 (or state (paredit-current-parse-state))))) - (goto-char start) - (forward-sexp 1) - (cons start (1- (point)))))) - -(defun paredit-enclosing-string-start () - (car (paredit-string-start+end-points))) - -(defun paredit-enclosing-string-end () - (+ 1 (cdr (paredit-string-start+end-points)))) - -(defun paredit-enclosing-list-start () - (save-excursion - (backward-up-list) - (point))) - -(defun paredit-enclosing-list-end () - (save-excursion - (up-list) - (point))) - -(defun paredit-in-comment-p (&optional state) - "True if parse state STATE is within a comment. -If no parse state is supplied, compute one from the beginning of the - defun to the point." - ;; 4. nil if outside a comment, t if inside a non-nestable comment, - ;; else an integer (the current comment nesting) - (and (nth 4 (or state (paredit-current-parse-state))) - t)) - -(defun paredit-prefix-numeric-value (argument) - ;++ Kludgerific. - (cond ((integerp argument) argument) - ((eq argument '-) -1) - ((consp argument) - (cond ((equal argument '(4)) (paredit-count-sexps-forward)) ;C-u - ((equal argument '(16)) (paredit-count-sexps-backward)) ;C-u C-u - (t (error "Invalid prefix argument: %S" argument)))) - ((paredit-region-active-p) - (save-excursion - (save-restriction - (narrow-to-region (region-beginning) (region-end)) - (cond ((= (point) (point-min)) (paredit-count-sexps-forward)) - ((= (point) (point-max)) (paredit-count-sexps-backward)) - (t - (error "Point %S is not start or end of region: %S..%S" - (point) (region-beginning) (region-end))))))) - (t 1))) - -(defun paredit-count-sexps-forward () - (save-excursion - (let ((n 0) (p nil)) ;hurk - (paredit-ignore-sexp-errors - (while (setq p (scan-sexps (point) +1)) - (goto-char p) - (setq n (+ n 1)))) - n))) - -(defun paredit-count-sexps-backward () - (save-excursion - (let ((n 0) (p nil)) ;hurk - (paredit-ignore-sexp-errors - (while (setq p (scan-sexps (point) -1)) - (goto-char p) - (setq n (+ n 1)))) - n))) - -(defun paredit-point-at-sexp-boundary (n) - (cond ((< n 0) (paredit-point-at-sexp-start)) - ((= n 0) (point)) - ((> n 0) (paredit-point-at-sexp-end)))) - -(defun paredit-point-at-sexp-start () - (save-excursion - (forward-sexp) - (backward-sexp) - (point))) - -(defun paredit-point-at-sexp-end () - (save-excursion - (backward-sexp) - (forward-sexp) - (point))) - -(defun paredit-lose-if-not-in-sexp (command) - (if (or (paredit-in-string-p) - (paredit-in-comment-p) - (paredit-in-char-p)) - (error "Invalid context for command `%s'." command))) - -(defun paredit-check-region (start end) - "Signal an error if text between `start' and `end' is unbalanced." - ;; `narrow-to-region' will move the point, so avoid calling it if we - ;; don't need to. We don't want to use `save-excursion' because we - ;; want the point to move if `check-parens' reports an error. - (if (not (paredit-region-ok-p start end)) - (save-restriction - (narrow-to-region start end) - (check-parens)))) - -(defun paredit-region-ok-p (start end) - "Return true iff the region between `start' and `end' is balanced. -This is independent of context -- it doesn't check what state the - text at `start' is in." - (save-excursion - (paredit-handle-sexp-errors - (progn - (save-restriction - (narrow-to-region start end) - (scan-sexps (point-min) (point-max))) - t) - nil))) - -(defun paredit-current-indentation () - (save-excursion - (back-to-indentation) - (current-column))) - -(defun paredit-restore-column (column indentation) - ;; Preserve the point's position either in the indentation or in the - ;; code: if on code, move with the code; if in indentation, leave it - ;; in the indentation, either where it was (if still on indentation) - ;; or at the end of the indentation (if the code moved far enough - ;; left). - (let ((indentation* (paredit-current-indentation))) - (goto-char - (+ (point-at-bol) - (cond ((not (< column indentation)) - (+ column (- indentation* indentation))) - ((<= indentation* column) indentation*) - (t column)))))) - -;;;; Initialization - -(paredit-define-keys) -(paredit-annotate-mode-with-examples) -(paredit-annotate-functions-with-examples) - -(provide 'paredit) - -;;; Local Variables: -;;; outline-regexp: " \n;;;;+" -;;; End: - -;;; paredit.el ends here |