[Grouped diagnostics] Fix a stray, incorrect dash

Author: DougGregor

Sources/SwiftDiagnostics/GroupedDiagnostics.swift

@@ -180,8 +180,8 @@ extension GroupedDiagnostics {
         boxSuffix = ""
       }
 
-      prefixString = colorizeBufferOutline(padding + "╭-── ") + sourceFile.displayName + " " + boxSuffix + "\n"
-      suffixString = colorizeBufferOutline(padding + "╰-──" + String(repeating: "─", count: sourceFile.displayName.count + 2)) + boxSuffix + "\n"
+      prefixString = colorizeBufferOutline(padding + "╭─── ") + sourceFile.displayName + " " + boxSuffix + "\n"
+      suffixString = colorizeBufferOutline(padding + "╰───" + String(repeating: "─", count: sourceFile.displayName.count + 2)) + boxSuffix + "\n"
     }
 
     // Render the buffer.

Tests/SwiftDiagnosticsTest/GroupDiagnosticsFormatterTests.swift

@@ -115,14 +115,14 @@ final class GroupedDiagnosticsFormatterTests: XCTestCase {
       1 │ let pi = 3.14159
       2 │ #myAssert(pi == 3)
         ∣ ╰─ in expansion of macro 'myAssert' here
-        ╭-── #myAssert ───────────────────────────────────────────────────────
+        ╭─── #myAssert ───────────────────────────────────────────────────────
         │1 │ let __a = pi
         │2 │ let __b = 3
         │3 │ if !(__a == __b) {
         │  ∣          ╰─ no matching operator '==' for types 'Double' and 'Int'
         │4 │   fatalError("assertion failed: pi != 3")
         │5 │ }
-        ╰-────────────────────────────────────────────────────────────────────
+        ╰─────────────────────────────────────────────────────────────────────
       3 │ print("hello"
         ∣              ╰─ expected ')' to end function call
 
@@ -184,18 +184,18 @@ final class GroupedDiagnosticsFormatterTests: XCTestCase {
       1 │ let pi = 3.14159
       2 │ #myAssert(pi == 3)
         ∣ ╰─ in expansion of macro 'myAssert' here
-        ╭-── #myAssert ───────────────────────────────────────────────────────
+        ╭─── #myAssert ───────────────────────────────────────────────────────
         │1 │ let __a = pi
         │2 │ let __b = 3
         │3 │ if #invertedEqualityCheck(__a, __b) {
         │  ∣    ╰─ in expansion of macro 'invertedEqualityCheck' here
-        │  ╭-── #invertedEqualityCheck ───────────────────────────────────────
+        │  ╭─── #invertedEqualityCheck ───────────────────────────────────────
         │  │1 │ !(__a == __b)
         │  │  ∣       ╰─ no matching operator '==' for types 'Double' and 'Int'
-        │  ╰-─────────────────────────────────────────────────────────────────
+        │  ╰──────────────────────────────────────────────────────────────────
         │4 │   fatalError("assertion failed: pi != 3")
         │5 │ }
-        ╰-────────────────────────────────────────────────────────────────────
+        ╰─────────────────────────────────────────────────────────────────────
       3 │ print("hello"
         ∣              ╰─ expected ')' to end function call