Extract outlines for the requested glyph ids and add them to target. Skips ids already present in target. Glyphs with no outline are silently skipped. Mutates target directly — no allocation when no new glyphs appear.
target
Extract outlines for the requested glyph ids and add them to
target. Skips ids already present intarget. Glyphs with no outline are silently skipped. Mutatestargetdirectly — no allocation when no new glyphs appear.