Broken Syntax Highlighting for Spaced Parameter Delimiter

[PhoneDroid]

Describe the bug
Adding spacing between the parameter delimiter and
the parameter name breaks syntax highlighting.

Source

Works:

{%- render 'Snipper'
    , key: value
-%}

Screenshot of the above code for future reference:

Doesn't work:

{%- render 'Snipper'
    , key : value
-%}

Screenshot of the above code for future reference:

Expected behaviour
Syntax highlighting works no matter the
amount of space added between a parameter
delimiter and a parameter name.

Actual behaviour
It doesn't highlight the name , delimiter not the value.

Debugging information

• Theme Check Version 3.4.0

Additional context
Is also broken for GitHubs syntax highlighting.