Filter errors based on error identifier #14006
Description
Feature request
When it comes to raising the error level of an existing code base, I prefer to tackle one error type at a time. Although I appreciate UNIX's KISS principle and pipes and filters, I wish I did not have to do this:
./tools/phpstan --level=10 --error-format=json | jq -r '.files | to_entries[] | . as $file | .value.messages[] | select(.identifier == "<errorIdentifier>") | "\($file.key):\(.line) \(.message)"'
In the above, <errorIdentifier> is a placeholder for the identifier for the specific error type I am interested in, for example return.type.
It would be nice if PHPStan had a --filter <errorIdentifier> CLI option that would only display errors of the specified type.
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