Markdown: Make sure quotes (starting with >) aren't used as headers when underlined

Author: techee

Units/parser-markdown.r/simple-markdown.d/expected.tags

@@ -28,10 +28,10 @@ F	input.md	/^F$/;"	s	chapter:C	end:106	sectionMarker:-
 G	input.md	/^ G$/;"	s	chapter:C	end:109	sectionMarker:-
 H	input.md	/^  H$/;"	s	chapter:C	end:112	sectionMarker:-
 I	input.md	/^   I$/;"	s	chapter:C	end:128	sectionMarker:-
-C\\#	input.md	/^# C\\#$/;"	c	end:143	sectionMarker:#
+C\\#	input.md	/^# C\\#$/;"	c	end:146	sectionMarker:#
 J	input.md	/^J$/;"	s	chapter:C\\#	end:133	sectionMarker:-
 K	input.md	/^K$/;"	s	chapter:C\\#	end:136	sectionMarker:-
-L	input.md	/^L$/;"	s	chapter:C\\#	end:143	sectionMarker:-
+L	input.md	/^L$/;"	s	chapter:C\\#	end:146	sectionMarker:-
 x	input.md	/^function x$/;"	f
 y	input.md	/^function y$/;"	f
 z	input.md	/^z()$/;"	f

Units/parser-markdown.r/simple-markdown.d/input.md

@@ -141,3 +141,6 @@ ignored
     -
 
 ```foo```
+
+> quoted
+---

parsers/markdown.c

@@ -256,13 +256,16 @@ static void findMarkdownTags(void)
 			line_processed = true;
 
 		/* if it's a title underline, or a delimited block marking character */
-		else if (line[pos] == '=' || line[pos] == '-' || line[pos] == '#')
+		else if (line[pos] == '=' || line[pos] == '-' || line[pos] == '#' || line[pos] == '>')
 		{
 			int n_same;
 			for (n_same = 1; line[n_same] == line[pos]; ++n_same);
 
+			/* quote */
+			if (line[pos] == '>')
+				;  /* just to make sure line_processed = true so it won't be in a heading */
 			/* is it a two line title */
-			if (line[pos] == '=' || line[pos] == '-')
+			else if (line[pos] == '=' || line[pos] == '-')
 			{
 				char marker[2] = { line[pos], '\0' };
 				int kind = line[pos] == '=' ? K_CHAPTER : K_SECTION;