[ft-devel] Clean-up of af_loader_load_glyph()

[Nikolaus Waxweiler]

Hey list,
I'm trying to clean up the above function somewhat and wonder about a 
few things:

```
   scaler.face    = face; 

    scaler.x_scale = size->metrics.x_scale; 

    scaler.x_delta = 0;  /* XXX: TODO: add support for sub-pixel 
hinting */
    scaler.y_scale = size->metrics.y_scale; 

    scaler.y_delta = 0;  /* XXX: TODO: add support for sub-pixel 
hinting */


    scaler.render_mode = FT_LOAD_TARGET_MODE( load_flags ); 

    scaler.flags       = 0;  /* XXX: fix this */
```

What exactly is this subpixel hinting and what is needed to support it? 
What about the flags needs to be fixed?

```
#ifdef FT_OPTION_AUTOFIT2 

      /* XXX: undocumented hook to activate the latin2 writing system 
*/
      if ( load_flags & ( 1UL << 20 ) ) 

        options = AF_STYLE_LTN2_DFLT; 

#endif
```

Is this used in any capacity?

```
            /* for mono-width fonts (like Andale, Courier, etc.) we 
need */
            /* to keep the original rounded advance width; ditto for 
 */
            /* digits if all have the same advance width                 */
[...]
```

Why is this ifdef'ed out? Why is the second block below that ifdef'ed 
out? Can they be removed?