Console with emoji mess up the formatting

[HarasimowiczKamil]

Symfony version(s) affected: 5.1.3

Description

Emoji mess up the formatting. The border is not even.

How to reproduce

protected function execute(InputInterface $input, OutputInterface $output)
{
    $io = new SymfonyStyle($input, $output);
    $io->error("Some error message \u{1F625}");
    return Command::FAILURE;
}

Possible Solution

Something with string length count and encoding

Additional context

[someniatko]

I think if you somehow add a font with monospace emojies to your system, and let your terminal use this font, it will fix itself.
My guess it's not a Symfony's, but your OS / fonts / terminal combination's issue.

[ogizanagi]

I think it's actually an issue on how the block length is computed by SymfonyStyle. Actually updating \Symfony\Component\Console\Helper\Helper::strlen to use the String component width method would solve this (at least for this simple case. Also how could it work with emojis like 👨‍👩‍👧 ("👨\U+200D👩\U+200D👧")?).

Since the String component is required by symfony/console since 5.1, perhaps we should update the component to use it more extensively.

[carsonbot]

Hey, thanks for your report!
There has not been a lot of activity here for a while. Is this bug still relevant? Have you managed to find a workaround?

[chalasr]

Not stale.