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I am currently using the diredp-toggle-find-file-reuse-dir feature of Dired+ so that selecting a directory in a dired buffer opens the directory in the current buffer as described here. However, it seems that I only get this "re-use" functionality with <S-down-mouse-2>. Pressing <down-mouse-1> still causes directories to be opened in their own buffer.

I tried doing the (seemingly) obvious thing of setting the key binding directly

(define-key dired-mode-map [down-mouse-1] 'diredp-mouse-find-file-reuse-dir)

but I got strange behavior that basically looked as though I had clicked twice.

What do I need to do so that a single mouse click reuses the current dired buffer when opening a directory?

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nispio
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2 Answers2

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(define-key dired-mode-map (kbd "<mouse-2>") 'diredp-mouse-find-file)

If you did C-h k and then clicked mouse-1 on a file or directory it would have told you:

<down-mouse-1> at that spot runs the command mouse-drag-region, which...

<mouse-2> at that spot runs the command dired-mouse-find-file-other-window, which is an interactive Lisp function in dired+.el.

It is bound to <mouse-2>.

(It talks about mouse-2 because that is the binding. But by default option mouse-1-click-follows-link is non-nil. So your mouse-1 acts like mouse-2 on a link. That's vanilla Emacs. And no, the help is not as helpful as it should be.)

Dired+ chooses to have the mouse open stuff in another window, by default. The key binding above will change that. (There are other ways to accomplish the same thing.)

I rolled back your edit. In general, it should be mouse-2 that you bind here, not mouse-1. Links work with mouse-2 clicks. They can additionally work with mouse-1 clicks, if option mouse-1-click-follows-link is non-nil, which it is by default. But the proper key binding is for mouse-2, and the proper way to extend this to mouse-1 is to use the option.

(FWIW, I turn off mouse-1-click-follows-link, because I prefer the original Emacs behavior of mouse-2 (only) for links. I want mouse-1 to always act like mouse-1, even on links. I don't want to have to wait a moment, just to set point in the middle of a link.)

Drew
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  • Is there a reason that the setup function for reuse-dir doesn't do this automatically in dired+? It seems to be the advertised functionality. – nispio May 10 '16 at 22:41
  • Why ``? That's not what I'm asking for, and not what I want. – nispio May 10 '16 at 22:43
  • See my explanation. If you use non-`nil` `mouse-1-click-follows-link` (the default) then it is the option that makes `mouse-1` follow links. If you are very unusual (;-)) then you can of course bind `mouse-1` here and not have `mouse-2` also have the same behavior. My answer is for everyone, and it should also answer your problem. Unless you really want `mouse-2` to do something different, just bind `mouse-2` here and let the option extend the link-following behavior, as usual, to `mouse-1` also. – Drew May 10 '16 at 22:50
  • The answer to your first comment is that it does what it says. `C-M-R` (`diredp-toggle-find-file-reuse-dir`) acts only on `dired-find-file`, and `diredp-mouse-find-file`. It does not act on `-other-window` commands (e.g. `dired-mouse-find-file-other-window`). – Drew May 10 '16 at 22:55
  • I've updated the doc string of `diredp-toggle-find-file-reuse-dir` to try to make this more clear. – Drew May 10 '16 at 23:58
  • This answers all of the questions that I had while I was trying to figure this out, _including_ the questions that I didn't even ask. – nispio May 11 '16 at 00:52
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Existing answer didn't work for me. I had to look other solutions. Emacs: Dired Customization By Xah LeeThis page helped me. 

(require 'dired)
(put 'dired-find-alternate-file 'disabled nil)
(define-key dired-mode-map (kbd "<mouse-2>") 'dired-find-alternate-file)
Daniil Iaitskov
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