Code:
  (lambda ()
    (c-ts-mode)
    (newline)
    (indent-for-tab-command))

Point-Char: |

Name: Indents inside #if preproc

=-=
static void
free_glyph_pool (struct glyph_pool *pool)
{
  if (pool)
    {
#if defined GLYPH_DEBUG|
#endif
    }
}
=-=
static void
free_glyph_pool (struct glyph_pool *pool)
{
  if (pool)
    {
#if defined GLYPH_DEBUG
      |
#endif
    }
}
=-=-=

Name: Indents to 0 if #if preproc at root

=-=
#if 0|
/* */
static void
=-=
#if 0
|
/* */
static void
=-=-=