Emacs CC-Mode

Emacs code style configuration primarily consists of a series of association lists (i.e., key-value pairs).

• Line breaking style configuration is focused in c-cleanup-list
• Indentation configuration is focused in c-offsets-alist

You can use C-h v to enter c-cleanup-list or c-offsets-alist to view help.

c-offsets-alist

• + means to use the first line as the starting point, adding 1x c-basic-offset
• ++ means to use the first line as the starting point, adding 2x c-basic-offset
• * means to use the first line as the starting point, adding 0.5x c-basic-offset
• - means to use the first line as the starting point, subtracting 1x c-basic-offset
• -- means to use the first line as the starting point, subtracting 2x c-basic-offset
• / means to use the first line as the starting point, subtracting 0.5x c-basic-offset

Function Call Argument List

    func(
        a, b, c, // arglist-intro
        d, e, f, // arglist-cont
    ); // arglist-close

    func(
        a, b, c,  // arglist-intro
        d, e, f); // arglist-cont-nonempty
    func(a,
        b, c,  // arglist-cont
        d, e, f); // arglist-cont-nonempty

Function Definition

 1: void Bass::play( int volume )
 2: const
 3: {
 4:     /* this line starts a multiline
 5:      * comment.  This line should get 'c' syntax */
 6:
 7:     char* a_multiline_string = "This line starts a multiline \
 8: string.  This line should get 'string' syntax.";
 9:
10:   note:
11:     {
12: #ifdef LOCK
13:         Lock acquire();
14: #endif // LOCK
15:         slap_pop();
16:         cout << "I played "
17:              << "a note\n";
18:     }
19: }

• Line 2: func-decl-cont
• Line 4: both defun-block-intro and comment-intro
• Line 5: c
• Line 6: defun-block-intro
• Line 8: string
• Line 10: label
• Line 11: block-open & statement
• Lines 12,14: cpp-macro, statement-block-intro, statement
• Line 17: stream-op

 1: int res = ({
 2:         int y = foo (); int z;
 3:         if (y > 0) z = y; else z = - y;
 4:         z;
 5:     });

• Lines 2, 5: inexpr-statement

 1: array itgob()
 2: {
 3:     string s = map (backtrace()[-2][3..],
 4:                     lambda
 5:                         (mixed arg)
 6:                     {
 7:                         return sprintf ("%t", arg);
 8:                     }) * ", " + "\n";
 9:     return catch {
10:             write (s + "\n");
11:         };
12: }

• Lines 4 through 8: lambda
• line 5: lambda-intro-cont
• line 6: inlambda, inline-open
• line 8: inline-close
• line 10: inexpr-statement