diff --git a/font/sfnt/postscript.go b/font/sfnt/postscript.go
index 7c5db78..b686e60 100644
--- a/font/sfnt/postscript.go
+++ b/font/sfnt/postscript.go
@@ -969,7 +969,8 @@
 		31: {-1, "hvcurveto", t2CHvcurveto},
 	}, {
 		// 2-byte operators. The first byte is the escape byte.
-		0: {}, // Reserved.
+		34: {+7, "hflex", t2CHflex},
+		36: {+9, "hflex1", t2CHflex1},
 		// TODO: more operators.
 	}},
 }
@@ -1271,6 +1272,44 @@
 	return nil
 }
 
+// For the flex operators, we ignore the flex depth and always produce cubic
+// segments, not linear segments. It's not obvious why the Type 2 Charstring
+// format cares about switching behavior based on a metric in pixels, not in
+// ideal font units. The Go vector rasterizer has no problems with almost
+// linear cubic segments.
+
+func t2CHflex(p *psInterpreter) error {
+	p.type2Charstrings.cubeTo(
+		p.argStack.a[0], 0,
+		p.argStack.a[1], +p.argStack.a[2],
+		p.argStack.a[3], 0,
+	)
+	p.type2Charstrings.cubeTo(
+		p.argStack.a[4], 0,
+		p.argStack.a[5], -p.argStack.a[2],
+		p.argStack.a[6], 0,
+	)
+	return nil
+}
+
+func t2CHflex1(p *psInterpreter) error {
+	dy1 := p.argStack.a[1]
+	dy2 := p.argStack.a[3]
+	dy5 := p.argStack.a[7]
+	dy6 := -dy1 - dy2 - dy5
+	p.type2Charstrings.cubeTo(
+		p.argStack.a[0], dy1,
+		p.argStack.a[2], dy2,
+		p.argStack.a[4], 0,
+	)
+	p.type2Charstrings.cubeTo(
+		p.argStack.a[5], 0,
+		p.argStack.a[6], dy5,
+		p.argStack.a[8], dy6,
+	)
+	return nil
+}
+
 // subrBias returns the subroutine index bias as per 5177.Type2.pdf section 4.7
 // "Subroutine Operators".
 func subrBias(numSubroutines int) int32 {
diff --git a/font/sfnt/proprietary_test.go b/font/sfnt/proprietary_test.go
index d98961b..bb14a34 100644
--- a/font/sfnt/proprietary_test.go
+++ b/font/sfnt/proprietary_test.go
@@ -96,24 +96,32 @@
 	)
 )
 
-func TestProprietaryAdobeSourceCodeProOTF(t *testing.T) {
+func TestProprietaryAdobeSourceCodeProRegularOTF(t *testing.T) {
 	testProprietary(t, "adobe", "SourceCodePro-Regular.otf", 1500, -1)
 }
 
-func TestProprietaryAdobeSourceCodeProTTF(t *testing.T) {
+func TestProprietaryAdobeSourceCodeProRegularTTF(t *testing.T) {
 	testProprietary(t, "adobe", "SourceCodePro-Regular.ttf", 1500, -1)
 }
 
-func TestProprietaryAdobeSourceHanSansSC(t *testing.T) {
+func TestProprietaryAdobeSourceHanSansSCRegularOTF(t *testing.T) {
 	testProprietary(t, "adobe", "SourceHanSansSC-Regular.otf", 65535, -1)
 }
 
-func TestProprietaryAdobeSourceSansProOTF(t *testing.T) {
-	testProprietary(t, "adobe", "SourceSansPro-Regular.otf", 1800, -1)
+func TestProprietaryAdobeSourceSansProBlackOTF(t *testing.T) {
+	testProprietary(t, "adobe", "SourceSansPro-Black.otf", 1900, -1)
 }
 
-func TestProprietaryAdobeSourceSansProTTF(t *testing.T) {
-	testProprietary(t, "adobe", "SourceSansPro-Regular.ttf", 1800, -1)
+func TestProprietaryAdobeSourceSansProBlackTTF(t *testing.T) {
+	testProprietary(t, "adobe", "SourceSansPro-Black.ttf", 1900, -1)
+}
+
+func TestProprietaryAdobeSourceSansProRegularOTF(t *testing.T) {
+	testProprietary(t, "adobe", "SourceSansPro-Regular.otf", 1900, -1)
+}
+
+func TestProprietaryAdobeSourceSansProRegularTTF(t *testing.T) {
+	testProprietary(t, "adobe", "SourceSansPro-Regular.ttf", 1900, -1)
 }
 
 func TestProprietaryAppleAppleSymbols(t *testing.T) {
@@ -401,6 +409,8 @@
 	"adobe/SourceCodePro-Regular.otf":   "Version 2.030;PS 1.0;hotconv 16.6.51;makeotf.lib2.5.65220",
 	"adobe/SourceCodePro-Regular.ttf":   "Version 2.030;PS 1.000;hotconv 16.6.51;makeotf.lib2.5.65220",
 	"adobe/SourceHanSansSC-Regular.otf": "Version 1.004;PS 1.004;hotconv 1.0.82;makeotf.lib2.5.63406",
+	"adobe/SourceSansPro-Black.otf":     "Version 2.020;PS 2.0;hotconv 1.0.86;makeotf.lib2.5.63406",
+	"adobe/SourceSansPro-Black.ttf":     "Version 2.020;PS 2.000;hotconv 1.0.86;makeotf.lib2.5.63406",
 	"adobe/SourceSansPro-Regular.otf":   "Version 2.020;PS 2.0;hotconv 1.0.86;makeotf.lib2.5.63406",
 	"adobe/SourceSansPro-Regular.ttf":   "Version 2.020;PS 2.000;hotconv 1.0.86;makeotf.lib2.5.63406",
 
@@ -436,6 +446,8 @@
 	"adobe/SourceCodePro-Regular.otf":   "Source Code Pro",
 	"adobe/SourceCodePro-Regular.ttf":   "Source Code Pro",
 	"adobe/SourceHanSansSC-Regular.otf": "Source Han Sans SC Regular",
+	"adobe/SourceSansPro-Black.otf":     "Source Sans Pro Black",
+	"adobe/SourceSansPro-Black.ttf":     "Source Sans Pro Black",
 	"adobe/SourceSansPro-Regular.otf":   "Source Sans Pro",
 	"adobe/SourceSansPro-Regular.ttf":   "Source Sans Pro",
 
@@ -639,6 +651,54 @@
 		},
 	},
 
+	"adobe/SourceSansPro-Black.otf": {
+		'¤': { // U+00A4 CURRENCY SIGN
+			// -45 147 99 168 98 hstem
+			// 44 152 148 152 vstem
+			// 102 76 rmoveto
+			moveTo(102, 76),
+			// 71 71 rlineto
+			lineTo(173, 147),
+			// 31 -13 33 -6 33 32 34 6 31 hflex1
+			cubeTo(204, 134, 237, 128, 270, 128),
+			cubeTo(302, 128, 336, 134, 367, 147),
+			// 71 -71 85 85 -61 60 rlineto
+			lineTo(438, 76),
+			lineTo(523, 161),
+			lineTo(462, 221),
+			// 21 30 13 36 43 vvcurveto
+			cubeTo(483, 251, 496, 287, 496, 330),
+			// 42 -12 36 -21 29 vhcurveto
+			cubeTo(496, 372, 484, 408, 463, 437),
+			// 60 60 -85 85 -70 -70 rlineto
+			lineTo(523, 497),
+			lineTo(438, 582),
+			lineTo(368, 512),
+			// -31 13 -34 7 -33 -33 -34 -7 -31 hflex1
+			cubeTo(337, 525, 303, 532, 270, 532),
+			cubeTo(237, 532, 203, 525, 172, 512),
+			// -70 70 -85 -85 59 -60 rlineto
+			lineTo(102, 582),
+			lineTo(17, 497),
+			lineTo(76, 437),
+			// -20 -29 -12 -36 -42 vvcurveto
+			cubeTo(56, 408, 44, 372, 44, 330),
+			// -43 12 -36 21 -30 vhcurveto
+			cubeTo(44, 287, 56, 251, 77, 221),
+			// -60 -60 rlineto
+			lineTo(17, 161),
+			// 253 85 rmoveto
+			lineTo(102, 76),
+			moveTo(270, 246),
+			// -42 -32 32 52 52 32 32 42 42 32 -32 -52 -52 -32 -32 -42 hvcurveto
+			cubeTo(228, 246, 196, 278, 196, 330),
+			cubeTo(196, 382, 228, 414, 270, 414),
+			cubeTo(312, 414, 344, 382, 344, 330),
+			cubeTo(344, 278, 312, 246, 270, 246),
+			// endchar
+		},
+	},
+
 	"adobe/SourceSansPro-Regular.otf": {
 		',': {
 			// -309 -1 115 hstem