fix string.utf_codepoint

AlexCodesApps · lpil · commit f7defd37174e · 2024-12-17T15:09:50.000Z
diff --git a/src/gleam/string.gleam b/src/gleam/string.gleam
@@ -811,6 +811,7 @@ pub fn utf_codepoint(value: Int) -> Result(UtfCodepoint, Nil) {
     i if i > 1_114_111 -> Error(Nil)
     65_534 | 65_535 -> Error(Nil)
     i if i >= 55_296 && i <= 57_343 -> Error(Nil)
+    i if i < 0 -> Error(Nil)
     i -> Ok(unsafe_int_to_utf_codepoint(i))
   }
 }

Original file line number	Diff line number	Diff line change
`@@ -811,6 +811,7 @@ pub fn utf_codepoint(value: Int) -> Result(UtfCodepoint, Nil) {`
`811`	`811`	`i if i > 1_114_111 -> Error(Nil)`
`812`	`812`	`65_534 \| 65_535 -> Error(Nil)`
`813`	`813`	`i if i >= 55_296 && i <= 57_343 -> Error(Nil)`
	`814`	`+ i if i < 0 -> Error(Nil)`
`814`	`815`	`i -> Ok(unsafe_int_to_utf_codepoint(i))`
`815`	`816`	`}`
`816`	`817`	`}`