Twig: Splitting HTML Attribute with an IF-clause will cause deletion!

[christophhapple]

Source

<div class="always-present{% if withCollapse %}with-collapse" data-toggle="collapse"{% else %}no-collapse"{% endif %}>
<p>Thingy here, possibly with collapse attached.</p>
</div>

Result after beautify

<div class="always-present{% if withCollapse %}with-collapse" data-toggle="collapse" {% else %} no-collapse="no-collapse"

Problem

The {% endif %} and everything afterwards just get stripped away!

Story

I ran into this issue with titles that only sometimes have a collapsed attached.
To achieve different styling, I add different classes depending on some logic.
Trying to be clever, I also wanted to add other HTML attributes using the same logic.

When wanting a collapse, I add the class with-collapse to the class-attribute.
Also, I add the data-toggle="collapse" attribute.
When not wanting a collapse, I add the class no-collapse to the class-attribute.
The data-toggle-attribute is omitted in this case.

I realize this is messy HTML to begin with and it might be bad practice to use if-clauses to split HTML attributes the way I did.
PHPStorm already warns me that not all tags are claused since it somehow cannot handle the entanglement of attributes and if-clauses, too.
But still I think just deleting stuff is not a sane way to handle this ;)

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Please excuse me if you find the bug report lacking or peculiar somehow, this is my first time ;)

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PS: Turning the logic around makes no difference.

Source

<div class="always-present{% if noCollapse %} no-collapse"{% else %}with-collapse" data-toggle="collapse"{% endif %}>
<p>Thingy here, possibly with collapse attached.</p>
</div>

Result

<div class="always-present{% if noCollapse %} no-collapse" {% else %} with-collapse" data-toggle=" collapse="collapse"

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Edits for layout.