Unspecified behavior of using `<span>` with boilerplate

[tlylt]

Tell us about your environment Windows

• MarkBind Version: v3.1.1

What did you do? Please include the actual source code causing the issue. When adjusting span tags to prevent invalid wrapping of block-level elements, I discovered that in our docs we have this boilerplate: docs\_markbind\boilerplates\tip.md

<box border-left-color="{{ markbind_blue }}">

{{ icon_bulb_blue }} {{ tip_body | safe }}
</box>

This displays the content of tip_body "variable" within a box.

Some places that use it include the getting started page: docs\userGuide\gettingStarted.md

<include src="tip.md" boilerplate >
<span id="tip_body">
You can add the `--help` flag to any command to show the help screen. <br>
  e.g., `markbind init --help`
</span>
</include>

When changing the <span> to a <div>, it stops working.

<include src="tip.md" boilerplate >
<div id="tip_body">
You can add the `--help` flag to any command to show the help screen. <br>
  e.g., `markbind init --help`
</div>
</include>

What did you expect to happen?

What actually happened? Please include the actual, raw output.

I don't think there is any mention of this behavior of using <span id="tip_body"> to define a variable in our documentation(in particular, the reusing content page.)

[damithc]

@tlylt what if you use <variable name="tip_body"> instead of span/div?

[tlylt]

<variable name="tip_body">

and also <variable id="tip_body"> both ok.

Edit: <span name="tip_body"> works too

[damithc]

At early days of MarkBind, we used span for declaring variables. I don't think it is an advertised feature anymore. So, I guess the solution is to replace it with variable rather than div in this specific case.