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I usually use the drush_set_error() function when I want to log a error in drush, sometimes I just do something like this:

drush_set_error('DRUSH_INVALID_ARGUMENT', '....');

sometimes

drush_set_error('MODULE_NAME_INVALID_ARGUMENT', '....');

But I'm wondering if there is a standard or something similar to correctly name the error codes.

The only doc that comes in the function description is:

\Drupal\Component\Render\MarkupInterface|string $error: A text string identifying the type of error.

  • I guess "officially" there isn't. But I would follow the same good practice/convention as with D7's watchdog() and use the module name. – No Sssweat Sep 20 '17 at 1:28

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