+ local feat_dummy_vert = { gsub={vert={dflt={dflt=true}}} }
+ local seq_dummy_vert={{
+ features={vert={dflt={dflt=true}}},
+ --flags={false,false,false,false},
+ --index=1, name="s_s_0", skiphash=false, steps={coverage={},index=1},
+ ["type"]="gsub_single", order='vert',
+ }}