class RSpec::Core::Configuration

`rspec_options` attribute of RSpec's rake task.
`--backtrace`on the command line, in a `.rspec` file, or in the
To override this behaviour and display a full backtrace, use

getter
One can replace the list by using the setter or modify it through the

Defaults to RSpec::Core::BacktraceCleaner::DEFAULT_EXCLUSION_PATTERNS

The patterns to discard from backtraces.

def backtrace_exclusion_patterns
  @backtrace_cleaner.exclusion_patterns
end