CODEWITHSUNDEEP
phpsymfonyconsole
pierallard
pierallard

Reputation: 3371

Symfony OutputFormatterStyle "blink" does not blink

I have a very simple project using Symfony components, and displaying messages in console.

It declares a standard ConsoleOutput like this:

$this->output     = new ConsoleOutput();
$formatter = $this->output->getFormatter();
$formatter->setStyle('blink', new OutputFormatterStyle(null, null, array('blink')));
$formatter->setStyle('bold', new OutputFormatterStyle(null, null, array('bold')));

When I try to display messages with "blink"

$this->output->writeln(sprintf('%s<blink>...</blink>', $message));

It does not "blink", it displays the text with standard format. First I thought it was my own terminal issue, but it's the 2nd computer I check and it does not blink at all.

I tested to add a bold+blink format, like this

OutputFormatterStyle(null, null, ['bold', 'blink']);

And the result is a bold text, not blink.

If you want to access the complete code, it's here: https://github.com/akeneo/nelson/blob/master/src/Akeneo/System/AbstractConsoleLogger.php#L29

Upvotes: 2

Views: 304

Answers (1)

luchaninov
luchaninov

Reputation: 6796

Most probably your terminal doesn't support blinking text. You can test it running in bash:

echo -e "Normal \e[33mYellow\e[0m \e[1mBold\e[0m \e[5mBlink\e[0m"

My Putty shows correctly yellow and bold text but doesn't blink.

Most terminals don't support it:
http://misc.flogisoft.com/bash/tip_colors_and_formatting#terminals_compatibility

Upvotes: 2

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