Emacs OS X：下层$ PATH继承

Question

Emacs manual says the following: Both M-! and M-| use shell-file-name to specify the shell to use. This variable is initialized based on your SHELL environment variable when Emacs is started. If the file name does not specify a directory, the directories in the list exec-path are searched; this list is initialized based on the environment variable PATH when Emacs is started. Your .emacs file can override either or both of these default initializations. Both M-! and M-| use shell-file-name to specify the shell to use. This variable is initialized based on your SHELL environment variable when Emacs is started. If the file name does not specify a directory, the directories in the list exec-path are searched; this list is initialized based on the environment variable PATH when Emacs is started. Your .emacs file can override either or both of these default initializations.

shell-file-name is set to /usr/local/bin/zsh in terminal, echo $SHELL is usr/local/bin/zsh and echo $PATH is /usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin

However, Mx ! echo $SHELL Mx ! echo $SHELL is /bin/zsh and Mx ! echo $PATH Mx ! echo $PATH is /usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin

Why is this so? How do I change it to be the same with the terminal $PATH?

Answer 1

I'm not sure of the specifics, but I think what you want is to set PATH in your .emacs , and that exec-path is used to search for your shell executable, not used by your shell executable.

Basically to put a desired directory at the front of $PATH , you want something like:

(setenv "PATH" (concat my-dir ":" (getenv "PATH")))

Some guides suggest you also do (add-to-list 'exec-path my-dir) when you do this in .emacs , I think just to keep the search paths of Emacs and its inferior shells in sync.

But hey, it's been almost a year, hopefully you've found a workaround by now.