class RuboCop::Cop::Utils::FormatString::FormatSequence

The syntax of a format sequence is as follows.

“‘ %[flags][.precision]type “`

A format sequence consists of a percent sign, followed by optional flags, width, and precision indicators, then terminated with a field type character.

For more complex formatting, Ruby supports a reference by name.

@see ruby-doc.org/core-2.6.3/Kernel.html#method-i-format