allow long-form Unicode escape sequence (#1114)

RexJaeschke · web-flow · commit 53421d559744 · 2024-05-24T10:23:40.000-04:00
diff --git a/standard/lexical-structure.md b/standard/lexical-structure.md
@@ -441,8 +441,9 @@ fragment Identifier_Start_Character
     ;
 
 fragment Underscore_Character
-    : '_'           // underscore
-    | '\\u005' [fF] // Unicode_Escape_Sequence for underscore
+    : '_'               // underscore
+    | '\\u005' [fF]     // Unicode_Escape_Sequence for underscore
+    | '\\U0000005' [fF] // Unicode_Escape_Sequence for underscore
     ;
 
 fragment Identifier_Part_Character

Original file line number	Diff line number	Diff line change
`@@ -441,8 +441,9 @@ fragment Identifier_Start_Character`
`441`	`441`	`;`
`442`	`442`
`443`	`443`	`fragment Underscore_Character`
`444`		`- : '_' // underscore`
`445`		`- \| '\\u005' [fF] // Unicode_Escape_Sequence for underscore`
	`444`	`+ : '_' // underscore`
	`445`	`+ \| '\\u005' [fF] // Unicode_Escape_Sequence for underscore`
	`446`	`+ \| '\\U0000005' [fF] // Unicode_Escape_Sequence for underscore`
`446`	`447`	`;`
`447`	`448`
`448`	`449`	`fragment Identifier_Part_Character`