option_symlink creates a symbolic link to option x.option_symlink creates a symbolic link to option x.
is_option_symlink tests if x is a symbolic link option.
option_symlink_target returns the end target option of a symbolic link
option x.
as.package_options creates an object such as the
ones used to stores package specific options.
The method [[ is equivalent to options() or getOption(...):
e.g. obj[[]] returns the list of options defined in obj, and
obj[['abc']] returns the value of option 'abc'.
packageOptions provides access to package specific options from a
given package that were defined with setupPackageOptions, and behaves as the base function options.
listPackageOptions returns the names of all option
currently defined with setupPackageOptions.
option_symlink(x)is_option_symlink(x, opts)
option_symlink_target(x, opts)
as.package_options(..., defaults = NULL)
# S3 method for package_options
[[(x, ...)
packageOptions(..., PACKAGE = packageName())
listPackageOptions()
packageOptions returns a list of package-specific options.
listPackageOptions returns a character vector (possibly empty).
a character string, a list or an object of class
package_options.
a list of options
Arguments passed on to base::options
NULL or a list of default options
with their values.
a package name