svoid tok_forOver(LS tok) {
  jreplace (tok, "for <id> over <id>:", "for (int $2 = 0; $2 < l($4); $2++)");
  jreplace (tok, "for <id> backwards over <id>:", "for (int $2 = l($5)-1; $2 >= 0; $2--)");
  
  // index var and implicitly typed element var
  jreplace (tok, "for <id>, <id> over <id>: ", "for $2, var $4 over $6:");
  
  // index var and explicitly typed element var
  jreplace (tok, "for <id>, <id> <id> over <id>: {", "for (int $2 = 0; $2 < l($7); $2++) { $4 $5 = $7.get($2);");
  
  jreplace (tok, "for <id>, <id> <id> backwards over <id>: {", "for (int $2 = l($8)-1; $2 >= 0; $2--) { $4 $5 = $8.get($2);");
  
  jreplace_dyn_allowDollarRefs(tok, "for immutable <id> to <id>: {", cIdx -> {
    S var = makeVar();
    ret "for \*var*/ to $5: { int $3 = \*var*/;";
  });
}