LazyBuf_Get
return Substring_Str(LazyBuf_Get(buf));
Substring sub = LazyBuf_Get(part);
Expr_SetValue(expr, Substring_Str(LazyBuf_Get(&buf)));
args.lhs = LazyBuf_Get(&lhsBuf);
args.rhs = LazyBuf_Get(&rhsBuf);
args.replace = LazyBuf_Get(&replaceBuf);
lhs = LazyBuf_Get(&lhsBuf);
name = LazyBuf_Get(&varname);