Fix extension DisableHtml not working properly with inline HTML (issue #46)

src/Markdig.Tests/Markdig.Tests.csproj

@@ -88,6 +88,7 @@
     <None Include="Specs\HardlineBreakSpecs.md" />
     <None Include="Specs\BootstrapSpecs.md" />
     <None Include="Specs\DiagramsSpecs.md" />
+    <None Include="Specs\NoHtmlSpecs.md" />
     <None Include="Specs\TaskListSpecs.md" />
     <None Include="Specs\SmartyPantsSpecs.md" />
     <None Include="Specs\MediaSpecs.md" />

src/Markdig.Tests/Specs/NoHtmlSpecs.md

@@ -0,0 +1,27 @@
+# Extensions
+
+## NoHTML
+
+The extension DisableHtml allows to disable the parsing of HTML:
+
+For inline HTML:
+
+```````````````````````````````` example
+this is some text</td></tr>
+.
+<p>this is some text&lt;/td&gt;&lt;/tr&gt;</p>
+````````````````````````````````
+
+For Block HTML:
+
+```````````````````````````````` example
+<div>
+this is some text
+</div>
+.
+<p>&lt;div&gt;
+this is some text
+&lt;/div&gt;</p>
+````````````````````````````````
+
+

src/Markdig.Tests/Specs/Specs.cs

@@ -19845,4 +19845,54 @@ namespace Markdig.Tests
         }
     }
         // TODO: Add other text diagram languages
+        // # Extensions
+        //
+        // ## NoHTML
+        //
+        // The extension DisableHtml allows to disable the parsing of HTML:
+        //
+        // For inline HTML:
+    [TestFixture]
+    public partial class TestExtensionsNoHTML
+    {
+        [Test]
+        public void Example001()
+        {
+            // Example 1
+            // Section: Extensions NoHTML
+            //
+            // The following CommonMark:
+            //     this is some text</td></tr>
+            //
+            // Should be rendered as:
+            //     <p>this is some text&lt;/td&gt;&lt;/tr&gt;</p>
+
+            Console.WriteLine("Example {0}" + Environment.NewLine + "Section: {0}" + Environment.NewLine, 1, "Extensions NoHTML");
+			TestParser.TestSpec("this is some text</td></tr>", "<p>this is some text&lt;/td&gt;&lt;/tr&gt;</p>", "nohtml");
+        }
+    }
+        // For Block HTML:
+    [TestFixture]
+    public partial class TestExtensionsNoHTML
+    {
+        [Test]
+        public void Example002()
+        {
+            // Example 2
+            // Section: Extensions NoHTML
+            //
+            // The following CommonMark:
+            //     <div>
+            //     this is some text
+            //     </div>
+            //
+            // Should be rendered as:
+            //     <p>&lt;div&gt;
+            //     this is some text
+            //     &lt;/div&gt;</p>
+
+            Console.WriteLine("Example {0}" + Environment.NewLine + "Section: {0}" + Environment.NewLine, 2, "Extensions NoHTML");
+			TestParser.TestSpec("<div>\nthis is some text\n</div>", "<p>&lt;div&gt;\nthis is some text\n&lt;/div&gt;</p>", "nohtml");
+        }
+    }
 }

src/Markdig.Tests/Specs/Specs.tt

@@ -59,6 +59,7 @@ SOFTWARE.
 		new KeyValuePair<string, string>(Host.ResolvePath("AutoIdentifierSpecs.md"), "autoidentifiers|advanced"),
 		new KeyValuePair<string, string>(Host.ResolvePath("TaskListSpecs.md"), "tasklists|advanced"),
 		new KeyValuePair<string, string>(Host.ResolvePath("DiagramsSpecs.md"), "diagrams|advanced"),
+		new KeyValuePair<string, string>(Host.ResolvePath("NoHtmlSpecs.md"), "nohtml"),
 	};
     var emptyLines = false;
     var displayEmptyLines = false;

src/Markdig/MarkdownExtensions.cs

@@ -487,6 +487,9 @@ namespace Markdig
                     case "nofollowlinks":
                         pipeline.UseNoFollowLinks();
                         break;
+                    case "nohtml":
+                        pipeline.DisableHtml();
+                        break;
                     default:
                         throw new ArgumentException($"Invalid extension `{extension}` from `{extensions}`", nameof(extensions));
                 }

src/Markdig/Parsers/Inlines/AutolineInlineParser.cs

@@ -62,6 +62,10 @@ namespace Markdig.Parsers.Inlines
                     Column = column
                 };
             }
+            else
+            {
+                return false;
+            }
 
             return true;
         }