52   auto fmt = [](StringRef str) {  in TEST()  local
58   EXPECT_EQ(fmt({"\0", 1}), QUOTE(""));  in TEST()
59   EXPECT_EQ(fmt("\a"), QUOTE(R"(\a)"));  in TEST()
60   EXPECT_EQ(fmt("\b"), QUOTE(R"(\b)"));  in TEST()
61   EXPECT_EQ(fmt("\f"), QUOTE(R"(\f)"));  in TEST()
62   EXPECT_EQ(fmt("\n"), QUOTE(R"(\n)"));  in TEST()
63   EXPECT_EQ(fmt("\r"), QUOTE(R"(\r)"));  in TEST()
64   EXPECT_EQ(fmt("\t"), QUOTE(R"(\t)"));  in TEST()
65   EXPECT_EQ(fmt("\v"), QUOTE(R"(\v)"));  in TEST()
66   EXPECT_EQ(fmt("\""), QUOTE(R"(\")"));  in TEST()
67   EXPECT_EQ(fmt("\'"), QUOTE(R"(')"));  in TEST()
68   EXPECT_EQ(fmt("\\"), QUOTE(R"(\\)"));  in TEST()
71   EXPECT_EQ(fmt("'"), QUOTE("'"));  in TEST()
72   EXPECT_EQ(fmt("a"), QUOTE("a"));  in TEST()
73   EXPECT_EQ(fmt("Z"), QUOTE("Z"));  in TEST()
74   EXPECT_EQ(fmt("��"), QUOTE("��"));  in TEST()
77   EXPECT_EQ(fmt("\uD55C"), QUOTE("\uD55C"));  in TEST()
78   EXPECT_EQ(fmt("\U00010348"), QUOTE("\U00010348"));  in TEST()
80   EXPECT_EQ(fmt("\376"), QUOTE(R"(\xfe)")); // \376 is 254 in decimal.  in TEST()
81   EXPECT_EQ(fmt("\xfe"), QUOTE(R"(\xfe)")); // \xfe is 254 in decimal.  in TEST()
86   auto fmt = [](StringRef str) {  in TEST()  local
92   EXPECT_EQ(fmt({"\0", 1}), QUOTE(""));  in TEST()
93   EXPECT_EQ(fmt("\a"), QUOTE(R"(\a)"));  in TEST()
94   EXPECT_EQ(fmt("\b"), QUOTE(R"(\b)"));  in TEST()
95   EXPECT_EQ(fmt("\f"), QUOTE(R"(\f)"));  in TEST()
96   EXPECT_EQ(fmt("\n"), QUOTE(R"(\n)"));  in TEST()
97   EXPECT_EQ(fmt("\r"), QUOTE(R"(\r)"));  in TEST()
98   EXPECT_EQ(fmt("\t"), QUOTE(R"(\t)"));  in TEST()
99   EXPECT_EQ(fmt("\v"), QUOTE(R"(\v)"));  in TEST()
100   EXPECT_EQ(fmt("\""), QUOTE(R"(\")"));  in TEST()
101   EXPECT_EQ(fmt("\'"), QUOTE(R"(')"));  in TEST()
102   EXPECT_EQ(fmt("\\"), QUOTE(R"(\\)"));  in TEST()
105   EXPECT_EQ(fmt("'"), QUOTE("'"));  in TEST()
106   EXPECT_EQ(fmt("a"), QUOTE("a"));  in TEST()
107   EXPECT_EQ(fmt("Z"), QUOTE("Z"));  in TEST()
108   EXPECT_EQ(fmt("��"), QUOTE("��"));  in TEST()
111   EXPECT_EQ(fmt("\uD55C"), QUOTE("\uD55C"));  in TEST()
112   EXPECT_EQ(fmt("\U00010348"), QUOTE("\U00010348"));  in TEST()
114   EXPECT_EQ(fmt("\376"), QUOTE(R"(\xfe)")); // \376 is 254 in decimal.  in TEST()
115   EXPECT_EQ(fmt("\xfe"), QUOTE(R"(\xfe)")); // \xfe is 254 in decimal.  in TEST()
120   auto fmt = [](StringRef str) {  in TEST()  local
126   EXPECT_EQ(fmt({"\0", 1}), QUOTE(""));  in TEST()
127   EXPECT_EQ(fmt("\a"), QUOTE(R"(\a)"));  in TEST()
128   EXPECT_EQ(fmt("\b"), QUOTE(R"(\u{8})"));  in TEST()
129   EXPECT_EQ(fmt("\f"), QUOTE(R"(\u{c})"));  in TEST()
130   EXPECT_EQ(fmt("\n"), QUOTE(R"(\n)"));  in TEST()
131   EXPECT_EQ(fmt("\r"), QUOTE(R"(\r)"));  in TEST()
132   EXPECT_EQ(fmt("\t"), QUOTE(R"(\t)"));  in TEST()
133   EXPECT_EQ(fmt("\v"), QUOTE(R"(\u{b})"));  in TEST()
134   EXPECT_EQ(fmt("\""), QUOTE(R"(\")"));  in TEST()
135   EXPECT_EQ(fmt("\'"), QUOTE(R"(\')"));  in TEST()
136   EXPECT_EQ(fmt("\\"), QUOTE(R"(\\)"));  in TEST()
139   EXPECT_EQ(fmt("'"), QUOTE(R"(\')"));  in TEST()
140   EXPECT_EQ(fmt("a"), QUOTE("a"));  in TEST()
141   EXPECT_EQ(fmt("Z"), QUOTE("Z"));  in TEST()
142   EXPECT_EQ(fmt("��"), QUOTE("��"));  in TEST()
145   EXPECT_EQ(fmt("\uD55C"), QUOTE("\uD55C"));  in TEST()
146   EXPECT_EQ(fmt("\U00010348"), QUOTE("\U00010348"));  in TEST()
148   EXPECT_EQ(fmt("\376"), QUOTE(R"(\u{fe})")); // \376 is 254 in decimal.  in TEST()
149   EXPECT_EQ(fmt("\xfe"), QUOTE(R"(\u{fe})")); // \xfe is 254 in decimal.  in TEST()