- if (multiplicity_i <= 3)
- return get_var ("interbeam");
- else
- return get_var ("interbeam4");
+ if (mod->parent_)
+ return find_scaled_font (mod->parent_, f, m);
+
+ Real lookup_mag = m / output_scale (mod);
+
+ SCM font_table = get_font_table (mod);
+ SCM sizes = scm_hashq_ref (font_table, f->self_scm (), SCM_EOL);
+ SCM handle = scm_assoc (scm_make_real (lookup_mag), sizes);
+ if (scm_is_pair (handle))
+ return unsmob_metrics (scm_cdr (handle));
+
+ SCM val = Modified_font_metric::make_scaled_font_metric (f, lookup_mag);
+
+ sizes = scm_acons (scm_make_real (lookup_mag), val, sizes);
+ scm_gc_unprotect_object (val);
+ scm_hashq_set_x (font_table, f->self_scm (), sizes);
+ return unsmob_metrics (val);