+/* A heuristic test for fonts that claim they need a preposterously
+ large vertical space. The heuristics is in the factor of 3. We
+ ignore the ascent and descent values reported by such fonts, and
+ instead go by the values reported for individual glyphs. */
+#define FONT_TOO_HIGH(ft) ((ft)->ascent + (ft)->descent > 3*(ft)->pixel_size)
+