Fix RoleParser

Author: reakaleek

src/Elastic.Markdown/Myst/Roles/RoleParser.cs

@@ -31,7 +31,6 @@ public abstract class RoleParser<TRole> : InlineParser
 
 	public override bool Match(InlineProcessor processor, ref StringSlice slice)
 	{
-
 		var match = slice.CurrentChar;
 
 		if (processor.Context is not ParserContext)
@@ -58,6 +57,7 @@ public override bool Match(InlineProcessor processor, ref StringSlice slice)
 			closeSticks++;
 			i++;
 		}
+
 		if (closeSticks > 1)
 			return false;
 
@@ -66,28 +66,25 @@ public override bool Match(InlineProcessor processor, ref StringSlice slice)
 			return false;
 
 		// {role} has to be followed by `content`
-		if (span[i] != '`')
-			return false;
-		if (span.Length == i - 1)
+		if ((uint)i >= (uint)span.Length || span[i] != '`')
 			return false;
 
-		var startContent = i;
-		i = span[(i + 1)..].IndexOfAny(['`']);
-		if ((uint)i >= (uint)span.Length)
-			return false;
+		var openingBacktickPos = i;
+		var contentStartPos = i + 1; // Skip the opening backtick
 
-		var closeBackTicks = 0;
-		while ((uint)i < (uint)span.Length && span[i] == '`')
+		var closingBacktickIndex = -1;
+		for (var j = contentStartPos; j < span.Length; j++)
 		{
-			closeBackTicks++;
-			i++;
+			if (span[j] != '`')
+				continue;
+			closingBacktickIndex = j;
+			break;
 		}
-		if (closeBackTicks > 1)
+
+		if (closingBacktickIndex == -1)
 			return false;
 
-		// Fix: Ensure we don't exceed the span length when calculating the end index
-		var endIndex = Math.Min(startContent + i + 2, span.Length);
-		var contentSpan = span[startContent..endIndex];
+		var contentSpan = span[openingBacktickPos..(closingBacktickIndex + 1)];
 
 		var startPosition = slice.Start;
 		slice.Start = startPosition + roleContent.Length + contentSpan.Length;
@@ -100,7 +97,7 @@ public override bool Match(InlineProcessor processor, ref StringSlice slice)
 		var end = processor.GetSourcePosition(slice.Start);
 		var sourceSpan = new SourceSpan(start, end);
 
-		var leaf = CreateRole(roleContent.ToString(), contentSpan.Trim().Trim('`').ToString(), processor);
+		var leaf = CreateRole(roleContent.ToString(), contentSpan.Trim('`').ToString(), processor);
 		leaf.Delimiter = '{';
 		leaf.Span = sourceSpan;
 		leaf.Line = line;