cc-mode indentation puzzle

[blue]

Hi,

I have been using cc-mode for years to help me adhere
to our corporate C coding style guidelines.  However,
there is one corner case that I still haven't got working.

Our standard dictates that if a statement is continued to
another line, the continuation lines (or lines) must each be
indented four spaces from the column where the original
statement started.  I have c-basic-offset = 8, and
statement-cont = '*' (which computes to 4).  Most of the time
this works fine.  But, if the continuation includes a
function call, I get an additional indentation of four
spaces for the next line.  The relevant offsets are
arglist-intro, arglist-cont, and arglist-cont-nonempty,
which are all '*' as well.  (Setting these all to 0 doesn't
produce the correct result either).

Example:

Indentation I want:

a = b + c +
    d + e + f(1,
    2, 3);

Indentation I get:

a = b + c +
    d + e + f(1,
        2, 3);

Here is the c-offsets-alist I use:

(c-add-style "personal"
       '((c-basic-offset . 8)
         (c-tab-always-indent . nil)
         (c-comment-only-line-offset . (0 . 0))
         (c-offsets-alist . ((statement-block-intro . +)
                             (inextern-lang . 0)
                             (knr-argdecl-intro . +)
                             (substatement-open . +)
                             (label . 0)
                             (statement-case-open . +)
                             (statement-cont . *)
                             (statement . 0)
                             (arglist-intro . *)
                             (arglist-cont . *)
                             (arglist-cont-nonempty . *)
                             (arglist-close . *)))))

I'm trying to find a "legitimate" way to do this, i.e.,
not hacking to cc-*.el files.


Any help is much appreciated -- thanks,

John