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Maintenance Ruby 3.4 gets fixes, but no new features. Switch to Ruby 4.0 →

instance method

Logger::Formatter#call

(::String severity, ::Time time, untyped progname, untyped msg) -> ::String
call(severity, time, progname, msg)
No documentation available
See also .new #format_datetime #msg2str also in 3.3 · 3.2 · 3.1