;;; find-func.el --- find the definition of the Emacs Lisp function near point -*- lexical-binding:t -*-
-;; Copyright (C) 1997, 1999, 2001-2015 Free Software Foundation, Inc.
+;; Copyright (C) 1997, 1999, 2001-2016 Free Software Foundation, Inc.
;; Author: Jens Petersen <petersen@kurims.kyoto-u.ac.jp>
;; Maintainer: petersen@kurims.kyoto-u.ac.jp
;;; Code:
+(require 'seq)
+
;;; User variables:
(defgroup find-function nil
foo\\|\\(?:[^icfgv]\\|g[^r]\\)\\(\\w\\|\\s_\\)+\\*?\\)\\|easy-mmode-define-[a-z-]+\\|easy-menu-define\\|\
menu-bar-make-toggle\\)"
find-function-space-re
- "\\('\\|\(quote \\)?%s\\(\\s-\\|$\\|\(\\|\)\\)")
+ "\\('\\|(quote \\)?%s\\(\\s-\\|$\\|[()]\\)")
"The regexp used by `find-function' to search for a function definition.
Note it must contain a `%s' at the place where `format'
should insert the function name. The default value avoids `defconst',
;; (point-min), which is acceptable in this case.
:type 'regexp
:group 'xref
- :version "25.0")
+ :version "25.1")
(defcustom find-alias-regexp
"(defalias +'%s"
should insert the feature name."
:type 'regexp
:group 'xref
- :version "25.0")
+ :version "25.1")
(defvar find-function-regexp-alist
'((nil . find-function-regexp)
LIBRARY should be a string (the name of the library)."
;; If the library is byte-compiled, try to find a source library by
;; the same name.
- (if (string-match "\\.el\\(c\\(\\..*\\)?\\)\\'" library)
- (setq library (replace-match "" t t library)))
+ (when (string-match "\\.el\\(c\\(\\..*\\)?\\)\\'" library)
+ (setq library (replace-match "" t t library)))
(or
(locate-file library
- (or find-function-source-path load-path)
- (find-library-suffixes))
+ (or find-function-source-path load-path)
+ (find-library-suffixes))
(locate-file library
- (or find-function-source-path load-path)
- load-file-rep-suffixes)
+ (or find-function-source-path load-path)
+ load-file-rep-suffixes)
(when (file-name-absolute-p library)
(let ((rel (find-library--load-name library)))
(when rel
(locate-file rel
(or find-function-source-path load-path)
load-file-rep-suffixes)))))
+ (find-library--from-load-path library)
(error "Can't find library %s" library)))
+(defun find-library--from-load-path (library)
+ ;; In `load-history', the file may be ".elc", ".el", ".el.gz", and
+ ;; LIBRARY may be "foo.el" or "foo", so make sure that we get all
+ ;; potential matches, and then see whether any of them lead us to an
+ ;; ".el" or an ".el.gz" file.
+ (let* ((elc-regexp "\\.el\\(c\\(\\..*\\)?\\)\\'")
+ (suffix-regexp
+ (concat "\\("
+ (mapconcat 'regexp-quote (find-library-suffixes) "\\'\\|")
+ "\\|" elc-regexp "\\)\\'"))
+ (potentials
+ (mapcar
+ (lambda (entry)
+ (if (string-match suffix-regexp (car entry))
+ (replace-match "" t t (car entry))
+ (car entry)))
+ (seq-filter
+ (lambda (entry)
+ (string-match
+ (concat "\\`"
+ (regexp-quote
+ (replace-regexp-in-string suffix-regexp "" library))
+ suffix-regexp)
+ (file-name-nondirectory (car entry))))
+ load-history)))
+ result)
+ (dolist (file potentials)
+ (dolist (suffix (find-library-suffixes))
+ (when (not result)
+ (cond ((file-exists-p file)
+ (setq result file))
+ ((file-exists-p (concat file suffix))
+ (setq result (concat file suffix)))))))
+ result))
+
(defvar find-function-C-source-directory
(let ((dir (expand-file-name "src" source-directory)))
(if (file-accessible-directory-p dir) dir))
(cons (current-buffer) (match-beginning 0))))
;;;###autoload
-(defun find-library (library)
+(defun find-library (library &optional other-window)
"Find the Emacs Lisp source of LIBRARY.
-LIBRARY should be a string (the name of the library)."
+LIBRARY should be a string (the name of the library). If the
+optional OTHER-WINDOW argument (i.e., the command argument) is
+specified, pop to a different window before displaying the
+buffer."
(interactive
(let* ((dirs (or find-function-source-path load-path))
(suffixes (find-library-suffixes))
(when (and def (not (test-completion def table)))
(setq def nil))
(list
- (completing-read (if def (format "Library name (default %s): " def)
+ (completing-read (if def
+ (format "Library name (default %s): " def)
"Library name: ")
- table nil nil nil nil def))))
- (let ((buf (find-file-noselect (find-library-name library))))
- (condition-case nil (switch-to-buffer buf) (error (pop-to-buffer buf)))))
+ table nil nil nil nil def)
+ current-prefix-arg)))
+ (prog1
+ (funcall (if other-window
+ 'pop-to-buffer
+ 'pop-to-buffer-same-window)
+ (find-file-noselect (find-library-name library)))
+ (run-hooks 'find-function-after-hook)))
;;;###autoload
(defun find-function-search-for-symbol (symbol type library)
If VERBOSE is non-nil, and FUNCTION is an alias, display a
message about the whole chain of aliases."
- (let ((def (if (symbolp function)
- (find-function-advised-original function)))
+ (let ((def (when (symbolp function)
+ (or (fboundp function)
+ (signal 'void-function (list function)))
+ (find-function-advised-original function)))
aliases)
;; FIXME for completeness, it might be nice to print something like:
;; foo (which is advised), which is an alias for bar (which is advised).
(not verbose)
(setq aliases (if aliases
(concat aliases
- (format ", which is an alias for `%s'"
- (symbol-name def)))
- (format "`%s' is an alias for `%s'"
- function (symbol-name def)))))
+ (format-message
+ ", which is an alias for `%s'"
+ (symbol-name def)))
+ (format-message "`%s' is an alias for `%s'"
+ function (symbol-name def)))))
(setq function (find-function-advised-original function)
def (find-function-advised-original function)))
(if aliases