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When I open a new file I want it to pop-up in a new frame. I've set pop-up-frames to t, but it still opens files that I double-click in Finder in existing buffers which results in other buffers being hidden.

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    The function you're looking for is probably find-file-other-frame. You can call it with C-x 5 f or remap this function to C-x C-f. – Nsukami _ Dec 9 '15 at 22:27
  • I would like it to be called whenever Finder calls Emacs to open a file. I'm using Yamamoto Mitsuharu's port for OS X by the way. – Lenar Hoyt Dec 9 '15 at 22:31
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    You need to re-define the function ns-find-file. See the following related thread, which includes an example for OSX -- just remove the comment semi-colons before ;; (defalias 'ns-find-file 'db-ns-find-file) in the answer -- How to intercept a file before it opens and decide which frame -- stackoverflow.com/questions/18346785/… – lawlist Dec 24 '15 at 16:13
  • Just a comment: I have tried, more than once over the years, to set up one-frame-per-file, so that my window manager can handle ... frames, which is what it is good at! ;) There's always something lacking in every setup I've come up with... I am watching this question with great interest. – daveloyall Dec 24 '15 at 16:19
  • You might try setting the value of ns-pop-up-frames to fresh as described here (along with some more potentially useful information): gnu.org/software/emacs/manual/html_node/emacs/… I am not sure if it will work, but it sounds like the behavior you are looking for – elethan Dec 24 '15 at 19:08
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+25

If you're using emacsclient, opening files with

emacsclient -c

will open a new frame for each file. Not sure how this would work on OS X, but in XFCE I can set such a command for a filetype.

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I have switched from the brew formula railwaycat/emacsmacport/emacs-mac to standard emacs using brew install emacs --with-cocoa --with-gnutls --with-imagemagick --with-librsvg --with-mailutils, which compiles with the --with-ns switch per default (which the other port apparently does not contain). This required fixing up a few things such as the modifier keys. I'm also missing the Emoji & Symbols menu entry and the pixel-wise smooth scrolling, but I think I will get used to it.

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