Hmm, sorry, accidentally pressed enter...

What I'd want to set allow_svg to TRUE in the following function in
gnome-icon-theme.c:

static void
gnome_icon_theme_init (GnomeIconTheme *icon_theme)
{
  GnomeIconThemePrivate *priv;

  priv = g_new0 (GnomeIconThemePrivate, 1);

  icon_theme->priv = priv;

  priv->gtk_theme = NULL;
  priv->allow_svg = FALSE;
}

This way gnome-apps accept SVG-icons per default and you don't have to call them
PNG to be able to use SVGs as icons.

Thanks for your bug report!

What's the issue with calling gnome_icon_theme_set_allow_svg? In my opinion, we
should really respect the traditional GnomeIconTheme semantics, since it is
deprecated.

Hmm, for example Evolution only excepts "PNGs" as icons. I need to name my svgs to png extention. Kinda stupid.

I've filed bug 325050 against Evolution, feel free to file bug reports against any other software which still uses GnomeIconFactory without calling gnome_icon_theme_set_allow_svg. Note that GnomeIconFactory can never be as smart as GtkIconFactory, which peeks whether its pixbuf loaders support SVG.