+/* XXX: The superscript rise value should be relative to the current
+ * font size. Best would be for pango to support this. See:
+ *
+ * https://bugzilla.gnome.org/show_bug.cgi?id=708780
+ *
+ * For now, these are emipirically-derived values that look reasonable
+ * at the default size that score.c is using to draw the staff. If the
+ * user scales the staff up or down then these will look wrong.
+ */
+
+#define SUP "<span font='33' rise='30000'>"
+#define PUS "</span>"
+
+ struct { modified_degree_t degrees[3]; const char *name; } trichords[] = {
+ /* Triads */
+ { {{1, 0}, {3, +1}, {5, 0}}, "sus" },
+ { {{1, 0}, {3, 0}, {5, +1}}, SUP "+" PUS },
+ { {{1, 0}, {3, 0}, {5, 0}}, "" },
+ { {{1, 0}, {3, -1}, {5, 0}}, "m" },
+ { {{1, 0}, {3, -1}, {5, -1}}, "°" },
+ { {{1, 0}, {2, 0}, {5, 0}}, "msus2" },
+ /* Seventh chords with no 3rd */
+ { {{1, 0}, {5, +1}, {7, 0}}, SUP "+M7" PUS },
+ { {{1, 0}, {5, +1}, {7, -1}}, SUP "+7" PUS },
+ { {{1, 0}, {5, 0}, {7, 0}}, "M7" },
+ { {{1, 0}, {5, 0}, {7, -1}}, "7" },
+ { {{1, 0}, {5, -1}, {7, -1}}, "7♭5" },
+ /* Seventh chords with no 5th */
+ { {{1, 0}, {4, 0}, {7, 0}}, "M7sus" },
+ { {{1, 0}, {4, 0}, {7, -1}}, "7sus" },
+ { {{1, 0}, {3, 0}, {7, 0}}, "M7" },
+ { {{1, 0}, {3, 0}, {7, -1}}, "7" },
+ { {{1, 0}, {3, -1}, {7, 0}}, "m" SUP "M7" PUS },
+ { {{1, 0}, {3, -1}, {7, -1}}, "m7" },
+ { {{1, 0}, {2, 0}, {7, 0}}, "m" SUP "M7" PUS "sus2" },
+ { {{1, 0}, {2, 0}, {7, -1}}, "m7sus2" },
+ };
+
+ struct { modified_degree_t degrees[4]; const char *name; } tetrachords[] = {
+ /* Sixth chords */
+ { {{1, 0}, {4, 0}, {5, 0}, {6, 0}}, "6sus" },
+ { {{1, 0}, {3, 0}, {5, 0}, {6, 0}}, "6" }, /* Ambiguous with m7 */
+ { {{1, 0}, {3, -1}, {5, 0}, {6, 0}}, "m6" },
+ { {{1, 0}, {2, 0}, {5, 0}, {6, 0}}, "m6sus2" },
+ /* Seventh chords */
+ { {{1, 0}, {4, 0}, {5, +1}, {7, 0}}, SUP "+M7" PUS "sus" },
+ { {{1, 0}, {4, 0}, {5, +1}, {7, -1}}, SUP "+7" PUS "sus" },
+ { {{1, 0}, {4, 0}, {5, 0}, {7, 0}}, "M7sus" },
+ { {{1, 0}, {4, 0}, {5, 0}, {7, -1}}, "7sus" },
+ { {{1, 0}, {4, 0}, {5, -1}, {7, -1}}, "7♭5sus" },
+ { {{1, 0}, {3, 0}, {5, +1}, {7, 0}}, SUP "+M7" PUS },
+ { {{1, 0}, {3, 0}, {5, +1}, {7, -1}}, SUP "+7" PUS },
+ { {{1, 0}, {3, 0}, {5, 0}, {7, 0}}, "M7" },
+ { {{1, 0}, {3, 0}, {5, 0}, {7, -1}}, "7" },
+ { {{1, 0}, {3, 0}, {5, -1}, {7, -1}}, "7♭5" },
+ { {{1, 0}, {3, -1}, {5, 0}, {7, 0}}, "m" SUP "M7" PUS },
+ { {{1, 0}, {3, -1}, {5, 0}, {7, -1}}, "m7" },
+ { {{1, 0}, {3, -1}, {5, -1}, {7, 0}}, "°" SUP "M7" PUS },
+ { {{1, 0}, {3, -1}, {5, -1}, {7, -1}}, "𝆩" SUP "7" PUS },
+ { {{1, 0}, {3, -1}, {5, -1}, {7, -2}}, "°" SUP "7" PUS },
+ { {{1, 0}, {2, 0}, {5, 0}, {7, 0}}, "m" SUP "M7" PUS "sus2" },
+ { {{1, 0}, {2, 0}, {5, 0}, {7, -1}}, "m7sus2" },
+ { {{1, 0}, {2, 0}, {5, -1}, {7, 0}}, "°" SUP "M7" PUS "sus2" },
+ { {{1, 0}, {2, 0}, {5, -1}, {7, -1}}, "𝆩" SUP "7" PUS "sus2" },
+ { {{1, 0}, {2, 0}, {5, -1}, {7, -2}}, "°" SUP "7" PUS "sus2" }, /* Ambiguous with 7 */
+ /* Ninth chords voiced with no 5th */
+ { {{1, 0}, {9, 0}, {4, 0}, {7, 0}}, "M9sus" },
+ { {{1, 0}, {9, 0}, {4, 0}, {7, -1}}, "9sus" },
+ { {{1, 0}, {9, 0}, {3, 0}, {7, 0}}, "M9" },
+ { {{1, 0}, {9, 0}, {3, 0}, {7, -1}}, "9" },
+ { {{1, 0}, {9, 0}, {3, -1}, {7, 0}}, "m" SUP "M9" PUS },
+ { {{1, 0}, {9, 0}, {3, -1}, {7, -1}}, "m9" },
+ { {{1, 0}, {9, -1}, {3, -1}, {7, -1}}, "m♭9" },