before_comment fix.

When two or more comments are followed by a node, use the closest
comment as the before_comment. Prior to the fix, this combination
left node unbefore_commented:
// comment1 \n // comment2 \n node

source/md.h

@@ -11,7 +11,6 @@
 // - Outputting anything to MD or C code ideally would do something
 //   smart with auto-indentation, since some people have wanted readable
 //   layout (if they aren't using 4coder with virtual whitespace basically)
-// - Building with Clang
 // - Split out C-related stuff into helper language layers
 // - Helpers for parsing NodeFlags, figuring out which nodes in a set are
 //   separated by a semicolon, something like MD_SeekNodeWithFlags(node) -> node ?

source/md_impl.c

@@ -1461,7 +1461,11 @@ _MD_ParseOneNode(MD_ParseCtx *ctx)
             else if(token.kind == MD_TokenKind_Newline)
             {
                 MD_Parse_Bump(ctx, token);
-                if(MD_Parse_RequireKind(ctx, MD_TokenKind_Newline, 0))
+                if(MD_Parse_RequireKind(ctx, MD_TokenKind_Comment, &comment_token))
+                {
+                    // NOTE(mal): If more than one comment, use the last comment
+                }
+                else if(MD_Parse_RequireKind(ctx, MD_TokenKind_Newline, 0))
                 {
                     _MD_MemoryZero(&comment_token, sizeof(comment_token));
                 }