How to format all files under a dir in emacs?

Question

In emacs, I format a file as: 1) C-x h (or M-x mark-whole-buffer) 2) C-M-\ (or M-x indent-region)

I need help show me how to format all files under a dir?

Answer 1

Create a macro to do it. Open the directory in dired (C-x d), and then:

1. Put point on the first file.
2. Press F3 to start recording the macro.
3. Hit RET to open the file.
4. Format it with C-x h, C-M-\.
5. Bury the buffer with M-x bury-buffer. You'll be back in the dired buffer.
6. Go down one line.
7. Hit F4 to stop recording the macro.

So now you have a macro that opens the file on the current line, formats it, drops back to dired, and puts point to the next line. Run it with F4 as many times as needed.