Output containing testlogger tags can interfere with the produced logs

[radarsh]

If the raw output of a test contains internal testlogger tags (such as [red], [bold], [/], etc, it gets interpreted as actual tags and will be processed.

For example, a Spring Boot app logs

08:29:38.574 I - o.s.b.w.s.ServletRegistrationBean Servlet dispatcherServlet mapped to [/]

Which gets rendered as

Because [/] is interpreted as the ANSI reset command by testlogger.