Event assign_zero: Variable "f" assigned value 0.
Also see events: [var_deref_model]
3022 f = NULL;
3023 face = Qnil;
3024 }
3025
3026 /* Determine the width standard for comparison with the fonts we
find. */
3027
At conditional (1): "face == Qnil" taking false path
3028 if (NILP (face))
3029 size = 0;
3030 else
3031 {
3032 /* This is of limited utility since it works with character
3033 widths. Keep it for compatibility. --gerd. */
Event var_deref_model: Variable "f" tracked as NULL was passed to a function
that dereferences it. [model]
Also see events: [assign_zero]
If f is NULL, then face=Qnil, so the false path of face==Qnil won't
be taken.