Resolve `options(log_message.verbose)`. An explicit `verbose` argument wins. Otherwise the option is used, and the default is `TRUE`.
Examples
get_verbose()
#> [1] TRUE
get_verbose(verbose = FALSE)
#> [1] FALSE
get_verbose(verbose = TRUE)
#> [1] TRUE
options(log_message.verbose = FALSE)
get_verbose()
#> [1] FALSE
get_verbose(verbose = TRUE)
#> [1] TRUE
options(log_message.verbose = TRUE)
get_verbose()
#> [1] TRUE
options(log_message.verbose = NULL)