List installed 'Google Fonts' that can be found in the user cache directory.
installed_gfonts()families names as a character vector
Other functions for font management:
addGFontHtmlDependency(),
fonts_cache_dir(),
gfontHtmlDependency(),
install_gfont_script(),
liberationsansHtmlDependency(),
register_gfont(),
register_liberationsans()
if (FALSE) { # \dontrun{
if (check_gfonts()) {
dummy_setup()
register_gfont(family = "Roboto")
installed_gfonts()
}
} # }