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Re: Customizing C Indentation

From: Rodrigo González del Cueto
Subject: Re: Customizing C Indentation
Date: Tue, 14 Apr 2015 14:45:14 -0700 (PDT)
User-agent: G2/1.0

I was finally able to customize the indentation to do what I wanted. I had some 
trouble with nested blocks. Apparently the basic-offset (2), kept accumulating 
within each nested block, offsetting them by more than they should.

I guess my solution is far from elegant, but it works!

I set arglist-intro and arglist-close to use my edk-c-lineup-calls function.
Here is the code:

(defun indent-edk-func-call ()
      (re-search-forward "[a-zA-Z][a-zA-Z0-9]+ *(" (c-point 'eol) 'move)
      (if (match-string 0)
            ;;(message "Matched:(%s), (%s), (%s)" (match-string 0) 
(match-string 1) (match-string 2))
            (goto-char (match-beginning 0))

(defun edk-c-lineup-calls (langelem)
  ;; lineup stream operators
    (let* ((relpos (cdr langelem))
           (curcol (progn (goto-char relpos)
           (indent-size (indent-edk-func-call)))
        ;;(message "Indentation pos:(%s),(%s)" indent-size curcol)
        (if (> indent-size 0)
            (if (> curcol 2)
                (+ indent-size 2 (- curcol))
            ;;(message "+Indentation pos:(%s),(%s)" indent-size curcol)

On Monday, April 13, 2015 at 5:52:49 PM UTC-5, Rodrigo González del Cueto wrote:
> Hey all,
> I hope you could help me figure out how to customize Emacs to indent code in 
> the following way.
> I'm working on an EDK related project. And the EDK code standards state the 
> following:
> "Subsequent lines of multi-line function calls should line up one or two tab-
> stops from the beginning of the function name."
> Example:
>   Status = gRT->GetVariable(
>                   NORMAL_SETUP_NAME,
>                   &gEfiNormalSetupGuid,
>                   NULL,
>                   &VarSize,
>                   &SystemConfiguration
>                   );
> So given a function call, the arglist-intro offset, should make reference to 
> the position of the first character of the function being called, and from 
> there, go up an indentation level.
> I've read the Emacs documentation, and I only understood how to indent in 
> relation to the previous line's indentation level. But I haven't been able to 
> understand how to move within the previous line's content.
> -Rodrigo

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