Merge pull request #5856 from Gillibald/fixes/TextWrappingEmergencyBreaks

Allow emergency breaks for TextWrapping="Wrap"

src/Avalonia.Visuals/Media/TextFormatting/TextFormatterImpl.cs

@@ -422,7 +422,7 @@ namespace Avalonia.Media.TextFormatting
                             }
                             else
                             {
-                                currentPosition = currentLength + lineBreaker.Current.PositionWrap;
+                                currentPosition = currentLength + measuredLength;
                             }
 
                             breakFound = true;

tests/Avalonia.Skia.UnitTests/Media/TextFormatting/TextFormatterTests.cs

@@ -401,6 +401,24 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
                 Assert.Equal(expectedOffset, textLine.Start);
             }
         }
+
+        [Fact]
+        public void Should_FormatLine_With_Emergency_Breaks()
+        {
+            using (Start())
+            {
+                var defaultProperties = new GenericTextRunProperties(Typeface.Default);
+                var paragraphProperties = new GenericTextParagraphProperties(defaultProperties, textWrap: TextWrapping.Wrap);
+                
+                var textSource = new SingleBufferTextSource("0123456789_0123456789_0123456789_0123456789", defaultProperties);
+                var formatter = new TextFormatterImpl();
+                
+                var textLine =
+                    formatter.FormatLine(textSource, 0, 33, paragraphProperties);
+                
+                Assert.NotNull(textLine.TextLineBreak?.RemainingCharacters);
+            }
+        }
         
         public static IDisposable Start()
         {