问题
Im using the emacs binary from http://emacsformacosx.com/ When I'm editing a file in a mercurial source directory and run "ediff-revision" I get:
"File /the/file/im/editing.py is not under version control"
This command works on the vanilla windows distribution and also with aquamacs, is there something I need to do for vanilla GNU Emacs for mac to work correctly?
I've tried it with only this in my .emacs
(require 'ediff)
回答1:
So Mercurial for OSX installs itself in /usr/local/bin It seems emacs knows to look there in the Aquamacs and the command line versions. To get it working for GNU emacs I made a symbolic link of /usr/local/bin/hg in /usr/bin After that, every thing started working just fine.
# Open Terminal
cd /usr/bin
sudo ln -s /usr/local/bin/hg hg
Another method I ran across was to set the variable vc-path, however I couldn't get that solution to work. Thanks for those that took a stab at this.
回答2:
I had to do 2 things to get it working right for me.
First, make sure Emacs' vc system can see hg:
(add-to-list 'exec-path "/usr/local/bin")
And second, make sure that hg can be found from the shell:
(setenv "PATH" (concat (getenv "PATH") ":/usr/local/bin"))
回答3:
I faced the similar situation and tell you my story.
Typing C-x v = (vc-diff) on a buffer I have been working on I got:
File is not under version control
What? Then I came here, checked every comment posted above, and found nothing irregular.
Hmm... What is wrong? The status bar shows like this:
U:--- xxx.py 84% (500, 38) (Py Outl)
I tried to open another file in the same directory by typing C-x d RET (dired), then g to update the buffer, C-n to move to another file, e to open it. Well, this time the status bar shows like this:
-:--- yyy.py All (1, 0) Hg-0 (Py Outl)
Now I got a point! Firstly, I had started editing the first file with Aquamacs (emacs variant for Mac OS). Secondly, I did hg init, hg ci -m 'Imported the first version' .
Okay, C-x k (kill-buffer) to close xxx.py and then open it again. Bingo! Now the status bar shows like this:
-:--- xxx.py Bot (500, 0) Hg:0 (Py Outl)
Everything works fine now. You have a nice day!
来源：https://stackoverflow.com/questions/5177304/how-do-you-get-ediff-hg-working-in-emacs-23-2-for-mac