anchor.diff:  separator -> ';' : '$empty'.
   
   %% Inline statements
  -inline_statements -> expr : ['$1'].
  -inline_statements -> expr ';' exprs : ['$1'|'$3'].
  +inline_expr_list -> expr : ['$1'].
  +inline_expr_list -> expr ';' exprs : ['$1'|'$3'].
   
   %% Expressions
   exprs -> expr : ['$1'].
  
positive.code: binary -> '<<' string '>>' : {binary, line('$1'), '$2'}.
  
  %% Lambdas
  lambda -> fun '{' inline_statements '}' : {lambda, line('$1'), [], '$3'}.
  lambda -> fun '(' ')' '{' inline_statements '}' : {lambda, line('$1'), [], '$5'}.
  lambda -> fun '(' exprs ')' '{' inline_statements '}' : {lambda, line('$1'), '$3', '$6'}.
  lambda -> fun do expr_list 'end' : {lambda, line('$1'), [], '$3'}.
  lambda -> fun '(' ')' do expr_list 'end' : {lambda, line('$1'), [], '$5'}.
  lambda -> fun '(' exprs ')' do expr_list 'end' : {lambda, line('$1'), '$3', '$6'}.
  
negative.code:   expr_list
    separators
    separator
    inline_expr_list
    exprs
    eols
    expr
  