Unwanted output when there is special comment in template

[sillykelvin]

Thanks for your great effort for fixing issue [#2], I met another issue, example code:

(mustache-render
 "{{a}}
{{!<script src=\"somescript.js\" async=\"async\"></script>}}
{{b}}"
 (ht ("a" "AA")
     ("b" "BB")))

the output is:

AA

{{b}}

As you see, the second output is affected by the comment.

However, if I wrote the comment line like this(only with attribute async removed, other lines remain unchanged):

{{!<script src=\"somescript.js\"></script>}}

then the output will be okay.

Hope my description could do little help for you to fix this issue.

Thanks

[sillykelvin]

And one missing point(priority is not as high as the above one):

according to this spec(https://github.com/mustache/spec/blob/v1.0.2/specs/comments.yml#L27), standalone comment lines should be removed.

Also, if it is easy to fix, please help fix it, it is better if we could match the spec, isn't it? :-D

Thanks

[Wilfred]

Thanks again for helping me shake out the bugs in mustache.el :). I've left #2 open, since we still aren't handling trailing whitespace for standalone sections or comments. Otherwise, all the issues in this ticket should be fixed.

[sillykelvin]

I verified [#4] and it is okay now, thanks for your great job~~