rlang has several options which may be set globally to control behavior. A brief description of each is given here. If any functions are referenced, refer to their documentation for additional details.
rlang_interactive: A logical value used byis_interactive(). This can be set toTRUEto test interactive behavior in unit tests, for example.rlang_backtrace_on_error: A character string which controls whether backtraces are displayed with error messages, and the level of detail they print. See rlang_backtrace_on_error for the possible option values.rlang_trace_format_srcrefs: A logical value used to control whether srcrefs are printed as part of the backtrace.rlang_trace_top_env: An environment which will be treated as the top-level environment when printing traces. Seetrace_back()for examples.