Emacs and. sh (or. bash)?

问题

I've tried finding an Emacs specific answer to this one, so apologies if it is repetitive. Simple question. I know that from the point of view of the interpreter it doesn't matter if you write a bash script with or without the .sh or. bash suffix, but does using one of either of these change the way in which Emacs treats the file when editing it? I've been playing around with some bash scripts in Emacs, and I've half answered my question. But I'm brand new to bash, so a lot is still unclear.

Thanks :)

wds

PS. I've asked this question in my programming class but to no avail.

回答1:

Various ways emacs can determine the major-mode and shell type

1. look at the shebang #!/usr/bin/env bash line
2. Match the file extension to a major mode according to your auto-mode-alist configuration. You can set bash as the default shell to use by configuring sh-alias-alist, eg. (cl-pushnew '(sh . bash) sh-alias-alist :test #'equal) in your shell config file.
3. Using a local variable, eg. as the first line of a script: # -*- sh; sh-shell: bash; -*- to tell emacs the major mode is sh and to use the bash shell.
4. Set the major mode interactively with M-x sh-mode and set the type of shell by setting the local sh-shell variable or using the the sh-script function sh-set-shell.

来源：https://stackoverflow.com/questions/55230845/emacs-and-sh-or-bash