[PATCH] Incorrect use of completing-read in `find-function-read'

[Thierry Volpiatto <thierry.volpiatto@gmail.com>]

Hi, `find-function-read' doesn't use default argument of
`completing-read'.
While I was at it, I simplify the code, please have a look:

--8<---------------cut here---------------start------------->8---
=== modified file 'lisp/emacs-lisp/find-func.el'
*** lisp/emacs-lisp/find-func.el	2011-09-07 01:06:09 +0000
--- lisp/emacs-lisp/find-func.el	2011-11-07 09:10:47 +0000
***************
*** 363,391 ****
  Otherwise TYPE should be `defvar' or `defface'.
  If TYPE is nil, defaults using `function-called-at-point',
  otherwise uses `variable-at-point'."
!   (let ((symb (if (null type)
! 		  (function-called-at-point)
! 		(if (eq type 'defvar)
! 		    (variable-at-point)
! 		  (variable-at-point t))))
! 	(predicate (cdr (assq type '((nil . fboundp) (defvar . boundp)
! 				     (defface . facep)))))
! 	(prompt (cdr (assq type '((nil . "function") (defvar . "variable")
! 				  (defface . "face")))))
! 	(enable-recursive-minibuffers t)
! 	val)
!     (if (equal symb 0)
! 	(setq symb nil))
!     (setq val (completing-read
! 	       (concat "Find "
! 		       prompt
! 		       (if symb
! 			   (format " (default %s)" symb))
! 		       ": ")
! 	       obarray predicate t nil))
!     (list (if (equal val "")
! 	      symb
! 	    (intern val)))))
  
  (defun find-function-do-it (symbol type switch-fn)
    "Find Emacs Lisp SYMBOL in a buffer and display it.
--- 363,385 ----
  Otherwise TYPE should be `defvar' or `defface'.
  If TYPE is nil, defaults using `function-called-at-point',
  otherwise uses `variable-at-point'."
!   (let* ((symb1 (cond ((null type) (function-called-at-point))
!                       ((eq type 'defvar) (variable-at-point))
!                       (t (variable-at-point t))))
!          (symb  (unless (eq symb1 0) symb1))
!          (predicate (cdr (assq type '((nil . fboundp)
!                                       (defvar . boundp)
!                                       (defface . facep)))))
!          (prompt-type (cdr (assq type '((nil . "function")
!                                         (defvar . "variable")
!                                         (defface . "face")))))
!          (prompt (concat "Find " prompt-type
!                          (and symb (format " (default %s)" symb))
!                          ": "))
!          (enable-recursive-minibuffers t))
!     (list (intern (completing-read
!                    prompt obarray predicate
!                    t nil nil (and symb (symbol-name symb)))))))
  
  (defun find-function-do-it (symbol type switch-fn)
    "Find Emacs Lisp SYMBOL in a buffer and display it.
--8<---------------cut here---------------end--------------->8---


-- 
  Thierry
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