parsing of hard-linebreak then space inside block-quote: >\\\n A

[mikeando]

The markdown dingus (and my alternate implementation) says that

>\
 A

should parse as

  <block_quote>
    <paragraph>
      <linebreak />
      <text>A</text>
    </paragraph>
  </block_quote>

And gives the HTML

<blockquote>
<p><br />
A</p>
</blockquote>

Note that there is no space before the A.

In contrast, comrak retains the space before the A, giving the HTML:

<blockquote>
<p><br />
 A</p>
</blockquote>

I think the correct behaviour is to remove the leading space as the spec contains:

6.7Hard line breaks
...
Leading spaces at the beginning of the next line are ignored:

[mikeando]

I'm happy to see if this is going to be easy to fix if you think it is worthwhile.

[mikeando]

Seems that the issue is restricted to the \\\n kind of hard-linebreak. The ␣␣\n kind seems to work fine.
Also, it is not due to the otherwise empty first line.

> A\
␣B

generates the leading space,

<blockquote>
<p>A<br />
␣B</p>
</blockquote>

while

> A␣␣
␣B

does not generate the leading space.

<blockquote>
<p>A<br />
B</p>
</blockquote>

[mikeando]

Similarly, the non-lazy form works as expected too.

>␣A\
>␣B

gives no extra space

<blockquote>
<p>A<br />
B</p>
</blockquote>

[kivikakk]

Closed by #214 — thanks!