I got the regex from a friend, he said that he got the regex from vue repository.
Now that you are asking I realized that I don't know the reason for make the regex in that way, the regex can be simplified to: {{(.+)?}}.
{{ Match two open brackets. }} Match two close brackets.
The point . match anything and the + extend the point to match more than one character, the ? make optional the expression inside of the parenthesis.
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I got the regex from a friend, he said that he got the regex from vue repository.
Now that you are asking I realized that I don't know the reason for make the regex in that way, the regex can be simplified to:
{{(.+)?}}.{{Match two open brackets.}}Match two close brackets.The point
.match anything and the+extend the point to match more than one character, the?make optional the expression inside of the parenthesis.