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-;; Perl code editing commands for GNU Emacs
-;; Copyright (C) 1990 William F. Mann
-;; Adapted from C code editing commands 'c-mode.el', Copyright 1987 by the
-;; Free Software Foundation, under terms of its General Public License.
-
-;; This file may be made part of GNU Emacs at the option of the FSF, or
-;; of the perl distribution at the option of Larry Wall.
-
-;; This code is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY. No author or distributor
-;; accepts responsibility to anyone for the consequences of using it
-;; or for whether it serves any particular purpose or works at all,
-;; unless he says so in writing. Refer to the GNU Emacs General Public
-;; License for full details.
-
-;; Everyone is granted permission to copy, modify and redistribute
-;; this code, but only under the conditions described in the
-;; GNU Emacs General Public License. A copy of this license is
-;; supposed to have been given to you along with GNU Emacs so you
-;; can know your rights and responsibilities. It should be in a
-;; file named COPYING. Among other things, the copyright notice
-;; and this notice must be preserved on all copies.
-
-;; To enter perl-mode automatically, add (autoload 'perl-mode "perl-mode")
-;; to your .emacs file and change the first line of your perl script to:
-;; #!/usr/bin/perl -- # -*-Perl-*-
-;; With argments to perl:
-;; #!/usr/bin/perl -P- # -*-Perl-*-
-;; To handle files included with do 'filename.pl';, add something like
-;; (setq auto-mode-alist (append (list (cons "\\.pl$" 'perl-mode))
-;; auto-mode-alist))
-;; to your .emacs file; otherwise the .pl suffix defaults to prolog-mode.
-
-;; This code is based on the 18.53 version c-mode.el, with extensive
-;; rewriting. Most of the features of c-mode survived intact.
-
-;; I added a new feature which adds functionality to TAB; it is controlled
-;; by the variable perl-tab-to-comment. With it enabled, TAB does the
-;; first thing it can from the following list: change the indentation;
-;; move past leading white space; delete an empty comment; reindent a
-;; comment; move to end of line; create an empty comment; tell you that
-;; the line ends in a quoted string, or has a # which should be a \#.
-
-;; If your machine is slow, you may want to remove some of the bindings
-;; to electric-perl-terminator. I changed the indenting defaults to be
-;; what Larry Wall uses in perl/lib, but left in all the options.
-
-;; I also tuned a few things: comments and labels starting in column
-;; zero are left there by indent-perl-exp; perl-beginning-of-function
-;; goes back to the first open brace/paren in column zero, the open brace
-;; in 'sub ... {', or the equal sign in 'format ... ='; indent-perl-exp
-;; (meta-^q) indents from the current line through the close of the next
-;; brace/paren, so you don't need to start exactly at a brace or paren.
-
-;; It may be good style to put a set of redundant braces around your
-;; main program. This will let you reindent it with meta-^q.
-
-;; Known problems (these are all caused by limitations in the elisp
-;; parsing routine (parse-partial-sexp), which was not designed for such
-;; a rich language; writing a more suitable parser would be a big job):
-;; 1) Regular expression delimitors do not act as quotes, so special
-;; characters such as `'"#:;[](){} may need to be backslashed
-;; in regular expressions and in both parts of s/// and tr///.
-;; 2) The globbing syntax <pattern> is not recognized, so special
-;; characters in the pattern string must be backslashed.
-;; 3) The q, qq, and << quoting operators are not recognized; see below.
-;; 4) \ (backslash) always quotes the next character, so '\' is
-;; treated as the start of a string. Use "\\" as a work-around.
-;; 5) To make variables such a $' and $#array work, perl-mode treats
-;; $ just like backslash, so '$' is the same as problem 5.
-;; 6) Unfortunately, treating $ like \ makes ${var} be treated as an
-;; unmatched }. See below.
-;; 7) When ' (quote) is used as a package name separator, perl-mode
-;; doesn't understand, and thinks it is seeing a quoted string.
-
-;; Here are some ugly tricks to bypass some of these problems: the perl
-;; expression /`/ (that's a back-tick) usually evaluates harmlessly,
-;; but will trick perl-mode into starting a quoted string, which
-;; can be ended with another /`/. Assuming you have no embedded
-;; back-ticks, this can used to help solve problem 3:
-;;
-;; /`/; $ugly = q?"'$?; /`/;
-;;
-;; To solve problem 6, add a /{/; before each use of ${var}:
-;; /{/; while (<${glob_me}>) ...
-;;
-;; Problem 7 is even worse, but this 'fix' does work :-(
-;; $DB'stop#'
-;; [$DB'line#'
-;; ] =~ s/;9$//;
-
-
-(defvar perl-mode-abbrev-table nil
- "Abbrev table in use in perl-mode buffers.")
-(define-abbrev-table 'perl-mode-abbrev-table ())
-
-(defvar perl-mode-map ()
- "Keymap used in Perl mode.")
-(if perl-mode-map
- ()
- (setq perl-mode-map (make-sparse-keymap))
- (define-key perl-mode-map "{" 'electric-perl-terminator)
- (define-key perl-mode-map "}" 'electric-perl-terminator)
- (define-key perl-mode-map ";" 'electric-perl-terminator)
- (define-key perl-mode-map ":" 'electric-perl-terminator)
- (define-key perl-mode-map "\e\C-a" 'perl-beginning-of-function)
- (define-key perl-mode-map "\e\C-e" 'perl-end-of-function)
- (define-key perl-mode-map "\e\C-h" 'mark-perl-function)
- (define-key perl-mode-map "\e\C-q" 'indent-perl-exp)
- (define-key perl-mode-map "\177" 'backward-delete-char-untabify)
- (define-key perl-mode-map "\t" 'perl-indent-command))
-
-(autoload 'c-macro-expand "cmacexp"
- "Display the result of expanding all C macros occurring in the region.
-The expansion is entirely correct because it uses the C preprocessor."
- t)
-
-(defvar perl-mode-syntax-table nil
- "Syntax table in use in perl-mode buffers.")
-
-(if perl-mode-syntax-table
- ()
- (setq perl-mode-syntax-table (make-syntax-table (standard-syntax-table)))
- (modify-syntax-entry ?\n ">" perl-mode-syntax-table)
- (modify-syntax-entry ?# "<" perl-mode-syntax-table)
- (modify-syntax-entry ?$ "/" perl-mode-syntax-table)
- (modify-syntax-entry ?% "." perl-mode-syntax-table)
- (modify-syntax-entry ?& "." perl-mode-syntax-table)
- (modify-syntax-entry ?\' "\"" perl-mode-syntax-table)
- (modify-syntax-entry ?* "." perl-mode-syntax-table)
- (modify-syntax-entry ?+ "." perl-mode-syntax-table)
- (modify-syntax-entry ?- "." perl-mode-syntax-table)
- (modify-syntax-entry ?/ "." perl-mode-syntax-table)
- (modify-syntax-entry ?< "." perl-mode-syntax-table)
- (modify-syntax-entry ?= "." perl-mode-syntax-table)
- (modify-syntax-entry ?> "." perl-mode-syntax-table)
- (modify-syntax-entry ?\\ "\\" perl-mode-syntax-table)
- (modify-syntax-entry ?` "\"" perl-mode-syntax-table)
- (modify-syntax-entry ?| "." perl-mode-syntax-table)
-)
-
-(defconst perl-indent-level 4
- "*Indentation of Perl statements with respect to containing block.")
-(defconst perl-continued-statement-offset 4
- "*Extra indent for lines not starting new statements.")
-(defconst perl-continued-brace-offset -4
- "*Extra indent for substatements that start with open-braces.
-This is in addition to perl-continued-statement-offset.")
-(defconst perl-brace-offset 0
- "*Extra indentation for braces, compared with other text in same context.")
-(defconst perl-brace-imaginary-offset 0
- "*Imagined indentation of an open brace that actually follows a statement.")
-(defconst perl-label-offset -2
- "*Offset of Perl label lines relative to usual indentation.")
-
-(defconst perl-tab-always-indent t
- "*Non-nil means TAB in Perl mode should always indent the current line,
-regardless of where in the line point is when the TAB command is used.")
-
-(defconst perl-tab-to-comment t
- "*Non-nil means that for lines which don't need indenting, TAB will
-either indent an existing comment, move to end-of-line, or if at end-of-line
-already, create a new comment.")
-
-(defconst perl-nochange ";?#\\|\f\\|\\s(\\|\\(\\w\\|\\s_\\)+:"
- "*Lines starting with this regular expression will not be auto-indented.")
-
-(defun perl-mode ()
- "Major mode for editing Perl code.
-Expression and list commands understand all Perl brackets.
-Tab indents for Perl code.
-Comments are delimited with # ... \\n.
-Paragraphs are separated by blank lines only.
-Delete converts tabs to spaces as it moves back.
-\\{perl-mode-map}
-Variables controlling indentation style:
- perl-tab-always-indent
- Non-nil means TAB in Perl mode should always indent the current line,
- regardless of where in the line point is when the TAB command is used.
- perl-tab-to-comment
- Non-nil means that for lines which don't need indenting, TAB will
- either delete an empty comment, indent an existing comment, move
- to end-of-line, or if at end-of-line already, create a new comment.
- perl-nochange
- Lines starting with this regular expression will not be auto-indented.
- perl-indent-level
- Indentation of Perl statements within surrounding block.
- The surrounding block's indentation is the indentation
- of the line on which the open-brace appears.
- perl-continued-statement-offset
- Extra indentation given to a substatement, such as the
- then-clause of an if or body of a while.
- perl-continued-brace-offset
- Extra indentation given to a brace that starts a substatement.
- This is in addition to perl-continued-statement-offset.
- perl-brace-offset
- Extra indentation for line if it starts with an open brace.
- perl-brace-imaginary-offset
- An open brace following other text is treated as if it were
- this far to the right of the start of its line.
- perl-label-offset
- Extra indentation for line that is a label.
-
-Various indentation styles: K&R BSD BLK GNU LW
- perl-indent-level 5 8 0 2 4
- perl-continued-statement-offset 5 8 4 2 4
- perl-continued-brace-offset 0 0 0 0 -4
- perl-brace-offset -5 -8 0 0 0
- perl-brace-imaginary-offset 0 0 4 0 0
- perl-label-offset -5 -8 -2 -2 -2
-
-Turning on Perl mode calls the value of the variable perl-mode-hook with no
-args, if that value is non-nil."
- (interactive)
- (kill-all-local-variables)
- (use-local-map perl-mode-map)
- (setq major-mode 'perl-mode)
- (setq mode-name "Perl")
- (setq local-abbrev-table perl-mode-abbrev-table)
- (set-syntax-table perl-mode-syntax-table)
- (make-local-variable 'paragraph-start)
- (setq paragraph-start (concat "^$\\|" page-delimiter))
- (make-local-variable 'paragraph-separate)
- (setq paragraph-separate paragraph-start)
- (make-local-variable 'paragraph-ignore-fill-prefix)
- (setq paragraph-ignore-fill-prefix t)
- (make-local-variable 'indent-line-function)
- (setq indent-line-function 'perl-indent-line)
- (make-local-variable 'require-final-newline)
- (setq require-final-newline t)
- (make-local-variable 'comment-start)
- (setq comment-start "# ")
- (make-local-variable 'comment-end)
- (setq comment-end "")
- (make-local-variable 'comment-column)
- (setq comment-column 32)
- (make-local-variable 'comment-start-skip)
- (setq comment-start-skip "\\(^\\|\\s-\\);?#+ *")
- (make-local-variable 'comment-indent-hook)
- (setq comment-indent-hook 'perl-comment-indent)
- (make-local-variable 'parse-sexp-ignore-comments)
- (setq parse-sexp-ignore-comments nil)
- (run-hooks 'perl-mode-hook))
-
-;; This is used by indent-for-comment
-;; to decide how much to indent a comment in Perl code
-;; based on its context.
-(defun perl-comment-indent ()
- (if (and (bolp) (not (eolp)))
- 0 ;Existing comment at bol stays there.
- (save-excursion
- (skip-chars-backward " \t")
- (max (1+ (current-column)) ;Else indent at comment column
- comment-column)))) ; except leave at least one space.
-
-(defun electric-perl-terminator (arg)
- "Insert character. If at end-of-line, and not in a comment or a quote,
-correct the line's indentation."
- (interactive "P")
- (let ((insertpos (point)))
- (and (not arg) ; decide whether to indent
- (eolp)
- (save-excursion
- (beginning-of-line)
- (and (not ; eliminate comments quickly
- (re-search-forward comment-start-skip insertpos t))
- (or (/= last-command-char ?:)
- ;; Colon is special only after a label ....
- (looking-at "\\s-*\\(\\w\\|\\s_\\)+$"))
- (let ((pps (parse-partial-sexp
- (perl-beginning-of-function) insertpos)))
- (not (or (nth 3 pps) (nth 4 pps) (nth 5 pps))))))
- (progn ; must insert, indent, delete
- (insert-char last-command-char 1)
- (perl-indent-line)
- (delete-char -1))))
- (self-insert-command (prefix-numeric-value arg)))
-
-;; not used anymore, but may be useful someday:
-;;(defun perl-inside-parens-p ()
-;; (condition-case ()
-;; (save-excursion
-;; (save-restriction
-;; (narrow-to-region (point)
-;; (perl-beginning-of-function))
-;; (goto-char (point-max))
-;; (= (char-after (or (scan-lists (point) -1 1) (point-min))) ?\()))
-;; (error nil)))
-
-(defun perl-indent-command (&optional arg)
- "Indent current line as Perl code, or optionally, insert a tab character.
-
-With an argument, indent the current line, regardless of other options.
-
-If perl-tab-always-indent is nil and point is not in the indentation
-area at the beginning of the line, simply insert a tab.
-
-Otherwise, indent the current line. If point was within the indentation
-area it is moved to the end of the indentation area. If the line was
-already indented properly and point was not within the indentation area,
-and if perl-tab-to-comment is non-nil (the default), then do the first
-possible action from the following list:
-
- 1) delete an empty comment
- 2) move forward to start of comment, indenting if necessary
- 3) move forward to end of line
- 4) create an empty comment
- 5) move backward to start of comment, indenting if necessary."
- (interactive "P")
- (if arg ; If arg, just indent this line
- (perl-indent-line "\f")
- (if (and (not perl-tab-always-indent)
- (<= (current-column) (current-indentation)))
- (insert-tab)
- (let (bof lsexp delta (oldpnt (point)))
- (beginning-of-line)
- (setq lsexp (point))
- (setq bof (perl-beginning-of-function))
- (goto-char oldpnt)
- (setq delta (perl-indent-line "\f\\|;?#" bof))
- (and perl-tab-to-comment
- (= oldpnt (point)) ; done if point moved
- (if (listp delta) ; if line starts in a quoted string
- (setq lsexp (or (nth 2 delta) bof))
- (= delta 0)) ; done if indenting occurred
- (let (eol state)
- (end-of-line)
- (setq eol (point))
- (if (= (char-after bof) ?=)
- (if (= oldpnt eol)
- (message "In a format statement"))
- (setq state (parse-partial-sexp lsexp eol))
- (if (nth 3 state)
- (if (= oldpnt eol) ; already at eol in a string
- (message "In a string which starts with a %c."
- (nth 3 state)))
- (if (not (nth 4 state))
- (if (= oldpnt eol) ; no comment, create one?
- (indent-for-comment))
- (beginning-of-line)
- (if (re-search-forward comment-start-skip eol 'move)
- (if (eolp)
- (progn ; kill existing comment
- (goto-char (match-beginning 0))
- (skip-chars-backward " \t")
- (kill-region (point) eol))
- (if (or (< oldpnt (point)) (= oldpnt eol))
- (indent-for-comment) ; indent existing comment
- (end-of-line)))
- (if (/= oldpnt eol)
- (end-of-line)
- (message "Use backslash to quote # characters.")
- (ding t))))))))))))
-
-(defun perl-indent-line (&optional nochange parse-start)
- "Indent current line as Perl code. Return the amount the indentation
-changed by, or (parse-state) if line starts in a quoted string."
- (let ((case-fold-search nil)
- (pos (- (point-max) (point)))
- (bof (or parse-start (save-excursion (perl-beginning-of-function))))
- beg indent shift-amt)
- (beginning-of-line)
- (setq beg (point))
- (setq shift-amt
- (cond ((= (char-after bof) ?=) 0)
- ((listp (setq indent (calculate-perl-indent bof))) indent)
- ((looking-at (or nochange perl-nochange)) 0)
- (t
- (skip-chars-forward " \t\f")
- (cond ((looking-at "\\(\\w\\|\\s_\\)+:")
- (setq indent (max 1 (+ indent perl-label-offset))))
- ((= (following-char) ?})
- (setq indent (- indent perl-indent-level)))
- ((= (following-char) ?{)
- (setq indent (+ indent perl-brace-offset))))
- (- indent (current-column)))))
- (skip-chars-forward " \t\f")
- (if (and (numberp shift-amt) (/= 0 shift-amt))
- (progn (delete-region beg (point))
- (indent-to indent)))
- ;; If initial point was within line's indentation,
- ;; position after the indentation. Else stay at same point in text.
- (if (> (- (point-max) pos) (point))
- (goto-char (- (point-max) pos)))
- shift-amt))
-
-(defun calculate-perl-indent (&optional parse-start)
- "Return appropriate indentation for current line as Perl code.
-In usual case returns an integer: the column to indent to.
-Returns (parse-state) if line starts inside a string."
- (save-excursion
- (beginning-of-line)
- (let ((indent-point (point))
- (case-fold-search nil)
- (colon-line-end 0)
- state containing-sexp)
- (if parse-start ;used to avoid searching
- (goto-char parse-start)
- (perl-beginning-of-function))
- (while (< (point) indent-point) ;repeat until right sexp
- (setq parse-start (point))
- (setq state (parse-partial-sexp (point) indent-point 0))
-; state = (depth_in_parens innermost_containing_list last_complete_sexp
-; string_terminator_or_nil inside_commentp following_quotep
-; minimum_paren-depth_this_scan)
-; Parsing stops if depth in parentheses becomes equal to third arg.
- (setq containing-sexp (nth 1 state)))
- (cond ((nth 3 state) state) ; In a quoted string?
- ((null containing-sexp) ; Line is at top level.
- (skip-chars-forward " \t\f")
- (if (= (following-char) ?{)
- 0 ; move to beginning of line if it starts a function body
- ;; indent a little if this is a continuation line
- (perl-backward-to-noncomment)
- (if (or (bobp)
- (memq (preceding-char) '(?\; ?\})))
- 0 perl-continued-statement-offset)))
- ((/= (char-after containing-sexp) ?{)
- ;; line is expression, not statement:
- ;; indent to just after the surrounding open.
- (goto-char (1+ containing-sexp))
- (current-column))
- (t
- ;; Statement level. Is it a continuation or a new statement?
- ;; Find previous non-comment character.
- (perl-backward-to-noncomment)
- ;; Back up over label lines, since they don't
- ;; affect whether our line is a continuation.
- (while (or (eq (preceding-char) ?\,)
- (and (eq (preceding-char) ?:)
- (memq (char-syntax (char-after (- (point) 2)))
- '(?w ?_))))
- (if (eq (preceding-char) ?\,)
- (perl-backward-to-start-of-continued-exp containing-sexp))
- (beginning-of-line)
- (perl-backward-to-noncomment))
- ;; Now we get the answer.
- (if (not (memq (preceding-char) '(?\; ?\} ?\{)))
- ;; This line is continuation of preceding line's statement;
- ;; indent perl-continued-statement-offset more than the
- ;; previous line of the statement.
- (progn
- (perl-backward-to-start-of-continued-exp containing-sexp)
- (+ perl-continued-statement-offset (current-column)
- (if (save-excursion (goto-char indent-point)
- (looking-at "[ \t]*{"))
- perl-continued-brace-offset 0)))
- ;; This line starts a new statement.
- ;; Position at last unclosed open.
- (goto-char containing-sexp)
- (or
- ;; If open paren is in col 0, close brace is special
- (and (bolp)
- (save-excursion (goto-char indent-point)
- (looking-at "[ \t]*}"))
- perl-indent-level)
- ;; Is line first statement after an open-brace?
- ;; If no, find that first statement and indent like it.
- (save-excursion
- (forward-char 1)
- ;; Skip over comments and labels following openbrace.
- (while (progn
- (skip-chars-forward " \t\f\n")
- (cond ((looking-at ";?#")
- (forward-line 1) t)
- ((looking-at "\\(\\w\\|\\s_\\)+:")
- (save-excursion
- (end-of-line)
- (setq colon-line-end (point)))
- (search-forward ":")))))
- ;; The first following code counts
- ;; if it is before the line we want to indent.
- (and (< (point) indent-point)
- (if (> colon-line-end (point))
- (- (current-indentation) perl-label-offset)
- (current-column))))
- ;; If no previous statement,
- ;; indent it relative to line brace is on.
- ;; For open paren in column zero, don't let statement
- ;; start there too. If perl-indent-level is zero,
- ;; use perl-brace-offset + perl-continued-statement-offset
- ;; For open-braces not the first thing in a line,
- ;; add in perl-brace-imaginary-offset.
- (+ (if (and (bolp) (zerop perl-indent-level))
- (+ perl-brace-offset perl-continued-statement-offset)
- perl-indent-level)
- ;; Move back over whitespace before the openbrace.
- ;; If openbrace is not first nonwhite thing on the line,
- ;; add the perl-brace-imaginary-offset.
- (progn (skip-chars-backward " \t")
- (if (bolp) 0 perl-brace-imaginary-offset))
- ;; If the openbrace is preceded by a parenthesized exp,
- ;; move to the beginning of that;
- ;; possibly a different line
- (progn
- (if (eq (preceding-char) ?\))
- (forward-sexp -1))
- ;; Get initial indentation of the line we are on.
- (current-indentation))))))))))
-
-(defun perl-backward-to-noncomment ()
- "Move point backward to after the first non-white-space, skipping comments."
- (interactive)
- (let (opoint stop)
- (while (not stop)
- (setq opoint (point))
- (beginning-of-line)
- (if (re-search-forward comment-start-skip opoint 'move 1)
- (progn (goto-char (match-end 1))
- (skip-chars-forward ";")))
- (skip-chars-backward " \t\f")
- (setq stop (or (bobp)
- (not (bolp))
- (forward-char -1))))))
-
-(defun perl-backward-to-start-of-continued-exp (lim)
- (if (= (preceding-char) ?\))
- (forward-sexp -1))
- (beginning-of-line)
- (if (<= (point) lim)
- (goto-char (1+ lim)))
- (skip-chars-forward " \t\f"))
-
-;; note: this may be slower than the c-mode version, but I can understand it.
-(defun indent-perl-exp ()
- "Indent each line of the Perl grouping following point."
- (interactive)
- (let* ((case-fold-search nil)
- (oldpnt (point-marker))
- (bof-mark (save-excursion
- (end-of-line 2)
- (perl-beginning-of-function)
- (point-marker)))
- eol last-mark lsexp-mark delta)
- (if (= (char-after (marker-position bof-mark)) ?=)
- (message "Can't indent a format statement")
- (message "Indenting Perl expression...")
- (save-excursion (end-of-line) (setq eol (point)))
- (save-excursion ; locate matching close paren
- (while (and (not (eobp)) (<= (point) eol))
- (parse-partial-sexp (point) (point-max) 0))
- (setq last-mark (point-marker)))
- (setq lsexp-mark bof-mark)
- (beginning-of-line)
- (while (< (point) (marker-position last-mark))
- (setq delta (perl-indent-line nil (marker-position bof-mark)))
- (if (numberp delta) ; unquoted start-of-line?
- (progn
- (if (eolp)
- (delete-horizontal-space))
- (setq lsexp-mark (point-marker))))
- (end-of-line)
- (setq eol (point))
- (if (nth 4 (parse-partial-sexp (marker-position lsexp-mark) eol))
- (progn ; line ends in a comment
- (beginning-of-line)
- (if (or (not (looking-at "\\s-*;?#"))
- (listp delta)
- (and (/= 0 delta)
- (= (- (current-indentation) delta) comment-column)))
- (if (re-search-forward comment-start-skip eol t)
- (indent-for-comment))))) ; indent existing comment
- (forward-line 1))
- (goto-char (marker-position oldpnt))
- (message "Indenting Perl expression...done"))))
-
-(defun perl-beginning-of-function (&optional arg)
- "Move backward to next beginning-of-function, or as far as possible.
-With argument, repeat that many times; negative args move forward.
-Returns new value of point in all cases."
- (interactive "p")
- (or arg (setq arg 1))
- (if (< arg 0) (forward-char 1))
- (and (/= arg 0)
- (re-search-backward "^\\s(\\|^\\s-*sub\\b[^{]+{\\|^\\s-*format\\b[^=]*=\\|^\\."
- nil 'move arg)
- (goto-char (1- (match-end 0))))
- (point))
-
-;; note: this routine is adapted directly from emacs lisp.el, end-of-defun;
-;; no bugs have been removed :-)
-(defun perl-end-of-function (&optional arg)
- "Move forward to next end-of-function.
-The end of a function is found by moving forward from the beginning of one.
-With argument, repeat that many times; negative args move backward."
- (interactive "p")
- (or arg (setq arg 1))
- (let ((first t))
- (while (and (> arg 0) (< (point) (point-max)))
- (let ((pos (point)) npos)
- (while (progn
- (if (and first
- (progn
- (forward-char 1)
- (perl-beginning-of-function 1)
- (not (bobp))))
- nil
- (or (bobp) (forward-char -1))
- (perl-beginning-of-function -1))
- (setq first nil)
- (forward-list 1)
- (skip-chars-forward " \t")
- (if (looking-at "[#\n]")
- (forward-line 1))
- (<= (point) pos))))
- (setq arg (1- arg)))
- (while (< arg 0)
- (let ((pos (point)))
- (perl-beginning-of-function 1)
- (forward-sexp 1)
- (forward-line 1)
- (if (>= (point) pos)
- (if (progn (perl-beginning-of-function 2) (not (bobp)))
- (progn
- (forward-list 1)
- (skip-chars-forward " \t")
- (if (looking-at "[#\n]")
- (forward-line 1)))
- (goto-char (point-min)))))
- (setq arg (1+ arg)))))
-
-(defun mark-perl-function ()
- "Put mark at end of Perl function, point at beginning."
- (interactive)
- (push-mark (point))
- (perl-end-of-function)
- (push-mark (point))
- (perl-beginning-of-function)
- (backward-paragraph))
-
-;;;;;;;; That's all, folks! ;;;;;;;;;