[clang] [llvm] [Clang] Reduce the number of ways we have to print a codepoint. (PR #206990)

[Corentin Jabot via cfe-commits]

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@@ -19,12 +19,12 @@ void test(char8_t u8, char16_t u16, char32_t u32) {
 
 
     c8(char32_t(0x7f));
-    c8(char32_t(0x80));   // expected-warning {{implicit conversion from 'char32_t' to 'char8_t' changes the meaning of the code point '<U+0080>'}}
+    c8(char32_t(0x80));   // expected-warning {{implicit conversion from 'char32_t' to 'char8_t' changes the meaning of the code point U+0080}}
 
     c8(char16_t(0x7f));
-    c8(char16_t(0x80));   // expected-warning {{implicit conversion from 'char16_t' to 'char8_t' changes the meaning of the code point '<U+0080>'}}
-    c8(char16_t(0xD800)); // expected-warning {{implicit conversion from 'char16_t' to 'char8_t' changes the meaning of the code unit '<0xD800>'}}
-    c8(char16_t(0xE000)); // expected-warning {{implicit conversion from 'char16_t' to 'char8_t' changes the meaning of the code point '<U+E000>'}}
+    c8(char16_t(0x80));   // expected-warning {{implicit conversion from 'char16_t' to 'char8_t' changes the meaning of the code point U+0080}}
+    c8(char16_t(0xD800)); // expected-warning {{implicit conversion from 'char16_t' to 'char8_t' changes the meaning of the code unit <0xD800>}}
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cor3ntin wrote:

Bunch of languages / hex editors etc do it. I don't know if it's conventional but it's certainly frequent.
Clang also does it in other places.

https://github.com/llvm/llvm-project/pull/206990