mixed-indents warns about document with no indents

[jyasskin]

The following Bikeshed document complains

WARNING: `Complain About: mixed-indents yes` is active, but I couldn't infer the document's indentation. Be more consistent, or turn this lint off.

Deleting or merging any of the lines removes the warning.

<pre class='metadata'>
Title: Title
Shortname: shortname
Level: none
Status: NOTE-ED
Group: tag
Repository: org/repo
URL: https://org.github.io/repo
Editor: An Editor
Abstract: Hello
</pre>


## Heading {#heading1}

Each,
not.
A,
which


### Heading {#heading2}

I
That
the
for
and
as
to
and

Users
for
or
Users
for
Even
user
and
when


### Heading {#heading3}

A
in
These
so
instead


### Heading {#heading4}

A
while
as

A
make
and

[tabatkins]

Yeah, it's just long enough to trigger the lint (minimum length of 50 lines, I think). I should put in a bypass for zero indententation at all, the lint is clearly silly on this document.

Or really, probably I should do the "50 lines" count only of indented lines.

[jyasskin]

2 indented lines should be enough? I wouldn't want to suddenly notice existing errors just because I added a line.

[ynyhxfo]

Actually I also encounter issues on this warning. Here is my index.bs file, and I only have three consecutive usage of indents. I tried to use tab/space/no indent, and non of them works. Should I add mixed-indents no to bypass it?