'(godlike-solved t) stream editing in Emacs

[machinebacon]

Just out of curiosity if the Emacs Gods here know if this is possible:

1) send a file to Emacs (I rather mean using a pipe than actually 'finding' it)
2) let it perform a couple of operations (e.g. M-x mark-whole-buffer M-x remove-whitespace-rectangle)
3a) save the file in-place and exit (C-x C-s C-x C-c)
3b) directly show to output on the screen (EDIT: I mean outside of Emacs)

I know that this is much easier with sed, but I really just want to verify if
- it's possible
- how the syntax would look like
- Emacs can be a stream editor
- Emacs can work non-interactively

Thanks!

[GekkoP]

I guess it could be possible.
The options "--file" and "--funcall" should be what you are looking for: https://www.gnu.org/software/emacs/manu ... -Arguments
Also, "--kill" will exit Emacs without confirmation.

I'm not sure you can call more than one function, though.

Edit: maybe this? http://emacswiki.org/emacs/EmacsScripts

[machinebacon]

^ Thanks Manu,

Code: Select all

emacs -nw --file logbook --funcall 'mark-whole-buffer' --funcall 'delete-whitespace-rectangle' --funcall 'save-buffer' --kill

works great!

[GekkoP]

^ Wow! That is cool.