From 68418d7f2abb997da308a736280ef2a27e67c686 Mon Sep 17 00:00:00 2001
From: Benedikt Stebner <b.stebner@outlook.de>
Date: Mon, 13 Sep 2021 18:56:03 +0200
Subject: [PATCH 1/2] Add failing test

---
 .../Media/PathMarkupParserTests.cs            | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/tests/Avalonia.Visuals.UnitTests/Media/PathMarkupParserTests.cs b/tests/Avalonia.Visuals.UnitTests/Media/PathMarkupParserTests.cs
index c5ad705654..ba8c490829 100644
--- a/tests/Avalonia.Visuals.UnitTests/Media/PathMarkupParserTests.cs
+++ b/tests/Avalonia.Visuals.UnitTests/Media/PathMarkupParserTests.cs
@@ -297,5 +297,28 @@ namespace Avalonia.Visuals.UnitTests.Media
                 Assert.Equal(new Point(20, 20), figure.StartPoint);
             }
         }
+
+        [Fact]
+        public void Should_Parse_Flags_Without_Separator()
+        {
+            var pathGeometry = new PathGeometry();
+            using (var context = new PathGeometryContext(pathGeometry))
+            using (var parser = new PathMarkupParser(context))
+            {
+                parser.Parse("a.898.898 0 01.27.188");
+
+                var figure = pathGeometry.Figures[0];
+
+                var segments = figure.Segments;
+                
+                Assert.NotNull(segments);
+                
+                Assert.Equal(1, segments.Count);
+
+                var arcSegment = segments[0];
+
+                Assert.IsType<ArcSegment>(arcSegment);
+            }
+        }
     }
 }

From 5b09e7a60ee7cf283a9a7040a6980a370ed8b32e Mon Sep 17 00:00:00 2001
From: Benedikt Stebner <b.stebner@outlook.de>
Date: Mon, 13 Sep 2021 18:56:26 +0200
Subject: [PATCH 2/2] Fix flag parsing

---
 src/Avalonia.Visuals/Media/PathMarkupParser.cs | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/Avalonia.Visuals/Media/PathMarkupParser.cs b/src/Avalonia.Visuals/Media/PathMarkupParser.cs
index 9fefcb6645..8b9d0833db 100644
--- a/src/Avalonia.Visuals/Media/PathMarkupParser.cs
+++ b/src/Avalonia.Visuals/Media/PathMarkupParser.cs
@@ -496,12 +496,18 @@ namespace Avalonia.Media
 
         private bool ReadBool(ref ReadOnlySpan<char> span)
         {
-            if (!ReadArgument(ref span, out var boolValue) || boolValue.Length != 1)
+            span = SkipWhitespace(span);
+            
+            if (span.IsEmpty)
             {
                 throw new InvalidDataException("Invalid bool rule.");
             }
             
-            switch (boolValue[0])
+            var c = span[0];
+            
+            span = span.Slice(1);
+            
+            switch (c)
             {
                 case '0':
                     return false;