NEWS

options 0.3.1

Fixed define_options when using a NULL default value. Previously, the NULL value would not be recognized and would silently ignore the option definition. (@dgkf #34)
Fixed envvar_is.logical (and thereby, envvar_is_true, envvar_is_false), leveraging as.logical internally to make the parsing from strings align more closely to what one may expect in R. Notably, all lowercase values true and false will now be recognized as their respective logical values. (@dgkf #34)

Introduces opts_list(), a utility for producing a list of option values with appropriate global option names that can be used more readily with options() and withr::with_options(). (@dgkf #19)

Fixes opts(), which would previously return default values after being updated. Will now appropriately return values just as they would be fetched using opt(). (@dgkf #17)
Exposes get_options_env() (currently experimental), for the purpose of accessing a listing of option names. (@dgkf #17)
Adds an optional option_fn parameter to option_spec, allowing for the stored option values to be processed, or to produce side-effects when accessed. (@dgkf #12)

The result of opt_source() when a value is derived from an environment variable was changed from "envir" to "envvar" to be more consistent with the rest of the package's messaging about sources. (@dgkf #12)

Adds various utility functions for modifying options: opt_set(), opt()<- and opt_set_local().
Trying to retrieve an option that is not yet defined will now default to throwing a warning. This behavior can be modified using the on_missing argument to functions that fetch option values.

opts() slightly refactored to produce more constructive output when no option names are provided. You can now use opts(env = package_name) to fetch a full named list of option values. (@dgkf #2)
Generated roxygen2 documentation using as_roxygen_docs() is now more consciencious about R CMD check requirements, moving \usage{} to a new section titled "Checking Option Values". (@dgkf #2)