Get the fallback font for a given string
Query glyph-specific information from fonts
Convert an extracted glyph raster to a grob
Register a font as a variant as an existing one
Search font repositories for a font based on family name
Split a string into emoji and non-emoji glyph runs
Get string metrics as measured by the current device
Calculate the width of a string, ignoring new-lines
Get string widths as measured by the current device