Comments on title: headers cause parse errors

[desplesda]

What is the current behavior?

Comments on title: headers cause parse errors.

Yarn Spinner supports comment in the header section of a node. These comments may be on their own line, or following a header. However, if a comment follows a title header, the compiler produces a syntax error.

Please provide the steps to reproduce, and if possible a minimal demo of the problem:

The following code causes a syntax error:

title: Start // this comment causes a parser error
// this comment is ok
example: woo // this comment is ok also
---
Test
===

What is the expected behavior?

Comments should be legal on any header.

[TheMartianLife]

Noting that third comment is presumably legal but is not a comment, it would be treated as part of the header field. So only the second is actually working.