syntax_data: {"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"Some(\"always\")"}]}
source_snippet:             Some("always") => slot.ratchet(FramePointer::Always),
context_before:             _ if parse_bool(&mut yes, v) => slot.ratchet(FramePointer::MayOmit),
context_after:             Some("non-leaf") => slot.ratchet(FramePointer::NonLeaf),