Bug when using triple starting braces.

[sanketdhoble]

For the below invalid syntax with triple brackets:
"Hey {{{data.variables.aa | default('there') }}"

data = { variables: {} }

I get output as [object][object] instead of getting syntax error. Why twig didn't throw it as an invalid syntax?

FYI: for input with starting & closing 3 braces : "Hey {{{data.variables.aa | default('there') }}}" I get output: "Hey [object][object]}"

Since I mistakenly added 3 braces, I expect to get an error instead of [object][object]

I used template.tokens to catch any twig syntax errors, but that didn't catch above error:

try {
    const template: any = Twig.twig({ data: startingString });
    if (template) {
        return template.tokens;
    }
} catch (err) {
    this.logger.error('Invalid twig syntax', startingString, err);
}

Any thoughts?

[willrowe]

It's most likely interpreting it as a map, which is an object in JavaScript. What happens if you use that same template in Twig PHP?

[ericmorand]

@willrowe, I just tested and TwigPHP throws a syntax error:

Unexpected "}" in "index.twig" at line 1.

Using twing, which is more accurate than TwingPHP, we get a the same error, alongside the column where the parsing failed:

Unexpected "}" in "index.twig" at line 1, column 46.

This is interesting because at column 46, there is the last closing "}". We would need to investigate the TwigPHP / Twing parsers to understand why this column is the one where the error is detected.

[sanketdhoble]

Any update on this?

[willrowe]

@sanketdhoble if you would like to look into this and draft up a PR then we will take a look. This project is completely open source and core developers only work on it when they have extra time to do so.