GNU bug report logs - #10771
TAB completion for info-display-manual

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From: Chong Yidong <cyd <at> gnu.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Juri Linkov <juri <at> jurta.org>, 10771 <at> debbugs.gnu.org, rgm <at> gnu.org
Subject: bug#10771: TAB completion for info-display-manual
Date: Mon, 03 Dec 2012 14:57:14 +0800

Eli Zaretskii <eliz <at> gnu.org> writes:

>> At least this is not worse than the original command that reads a
>> manual name without completion.
>
> I didn't say it was worse.  I asked how it was better.

How about adding existing Info buffers' manual names to the completion
table too, like the following?

=== modified file 'lisp/info.el'
*** lisp/info.el	2012-12-02 06:41:22 +0000
--- lisp/info.el	2012-12-03 06:55:15 +0000
***************
*** 5105,5113 ****
      (progn
        (info-initialize)
        (completing-read "Manual name: "
! 		       (apply-partially 'Info-read-node-name-2
! 					Info-directory-list
! 					(mapcar 'car Info-suffix-list))
  		       nil t))))
    (let ((blist (buffer-list))
  	(manual-re (concat "\\(/\\|\\`\\)" manual "\\(\\.\\|\\'\\)"))
--- 5105,5111 ----
      (progn
        (info-initialize)
        (completing-read "Manual name: "
! 		       (info--manual-names)
  		       nil t))))
    (let ((blist (buffer-list))
  	(manual-re (concat "\\(/\\|\\`\\)" manual "\\(\\.\\|\\'\\)"))
***************
*** 5126,5131 ****
--- 5124,5143 ----
        (info (Info-find-file manual)
  	    (generate-new-buffer-name "*info*")))))
  
+ (defun info--manual-names ()
+   (let (names)
+     (dolist (buffer (buffer-list))
+       (with-current-buffer buffer
+ 	(when (and (eq major-mode 'Info-mode)
+ 		   (stringp Info-current-file))
+ 	  (push (file-name-sans-extension
+ 		 (file-name-nondirectory Info-current-file))
+ 		names))))
+     (delete-dups (append names
+ 			 (apply-partially 'Info-read-node-name-2
+ 					  Info-directory-list
+ 					  (mapcar 'car Info-suffix-list))))))
+ 
  (provide 'info)
  
  ;;; info.el ends here

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