Fix setx heading.

xoofx · Mar 20, 2024 · 317ef6e · 317ef6e
1 parent c3a51a6
commit 317ef6e
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diff --git a/src/Markdig.Tests/TestSourcePosition.cs b/src/Markdig.Tests/TestSourcePosition.cs
@@ -190,6 +190,18 @@ public void TestSetextHeading()
 literal      ( 0, 0)  0-0
 heading      ( 3, 0)  3-5
 literal      ( 3, 0)  3-3");
+
+        //     01 23456 7
+        Check("A\n===  \n", @"
+heading      ( 1, 0)  0-6
+literal      ( 1, 0)  0-0");
+
+        //     01 23456 7
+        Check("A\n===n\n", @"
+paragraph    ( 0, 0)  0-5
+literal      ( 0, 0)  0-0
+linebreak    ( 0, 1)  1-1
+literal      ( 1, 0)  2-5");
     }
 
     [Test]

diff --git a/src/Markdig/Parsers/ParagraphBlockParser.cs b/src/Markdig/Parsers/ParagraphBlockParser.cs
@@ -176,6 +176,11 @@ private static char GetHeadingChar(ref StringSlice line, ref int count)
                 return headingChar;
             }
 
+            if (!line.CurrentChar.IsSpaceOrTab())
+            {
+                return (char)0;
+            }
+
             while (line.NextChar().IsSpaceOrTab())
             {
             }