else block in case always executes if it's the first block

In case if the else block is the very first, it always executes.

{% assign num = 1 %}
{% case num %}
{% else %}
else
{% when 1 %}
1
{% endcase %}

This outputs else but I would expect this to output 1. If you change the order to this:

{% assign num = 1 %}
{% case num %}
{% when 1 %}
1
{% else %}
else
{% endcase %}

It outputs 1 correctly.

In case.rb it sets execute_else_block to true in the beginning. It should probably go through all the when blocks first, and if none apply, then it should execute the else block if it exists.

Start in case.rb and reproduce the issue with the two case examples from the report. Check that a matching when branch wins even when else appears first, while else runs only when no when branch matches.