Re: [HACKERS] Source code format votes

Peter Mount <petermount@it.maidstone.gov.uk> writes:
> I'd prefer 8-space tabs, mainly because I have to set emacs to 4-space
> every time I enter a source file :-)

Not if you know how to configure Emacs properly ;-)

You need to put two things in your ~/.emacs.  First you need a
suitable mode-setting command, for which I use

; Cmd to set tab stops &etc for working with PostgreSQL code
(defun pgsql-c-mode ()
  "Set PostgreSQL C indenting conventions in current buffer."
  (interactive)
  (c-mode)				; make sure major mode is right
  (setq tab-width 4)			; adjust to nonstandard tab width
  (c-set-style "bsd")			; indent conventions are BSD
  (c-set-offset 'case-label '+)		; except we indent case labels
)

Now the above can be invoked by hand, but Peter E. showed me the
following trick for having it called automatically: add entries to your
auto-mode-alist that match both the start and end of the pathname,
so that pgsql-c-mode is automatically called for C files living in a
particular region of your filesystem.  Mine looks like

(setq auto-mode-alist
      (cons '("\\`/home/postgres/.*\\.[chyl]\\'" . pgsql-c-mode)
	    (cons '("\\`/home/tgl/pgsql/.*\\.[chyl]\\'" . pgsql-c-mode)
		  auto-mode-alist)))

This has the effect of setting Pgsql mode automatically for any .c, .h,
.y, or .l file underneath either /home/postgres/ or /home/tgl/pgsql/.
Adjust to taste and never think about tabs again.

BTW, Bruce suggested adding Local-variables settings to all the source
files to push Emacs into making the right settings, but I much prefer
doing it as above.  Local-variables is an insecure feature if you ask
me; I keep it disabled.

			regards, tom lane