X-Git-Url: http://nitlanguage.org

diff --git a/c_src/opts._sep.c b/c_src/opts._sep.c
index f1b4014..f3ab1bb 100644
--- a/c_src/opts._sep.c
+++ b/c_src/opts._sep.c
@@ -10,9 +10,10 @@ val_t opts___Option___names(val_t p0){
   fra.me.meth = LOCATE_opts___Option___names;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./../lib/opts.nit:19 */
+  /* ../lib/opts.nit:19 */
   REGB0 = TAG_Bool(ATTR_opts___Option____names(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -32,9 +33,10 @@ val_t opts___Option___helptext(val_t p0){
   fra.me.meth = LOCATE_opts___Option___helptext;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./../lib/opts.nit:25 */
+  /* ../lib/opts.nit:25 */
   REGB0 = TAG_Bool(ATTR_opts___Option____helptext(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -54,9 +56,10 @@ val_t opts___Option___mandatory(val_t p0){
   fra.me.meth = LOCATE_opts___Option___mandatory;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./../lib/opts.nit:28 */
+  /* ../lib/opts.nit:28 */
   REGB0 = TAG_Bool(ATTR_opts___Option____mandatory(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -76,10 +79,11 @@ void opts___Option___mandatory__eq(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___Option___mandatory__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
-  /* ./../lib/opts.nit:28 */
+  /* ../lib/opts.nit:28 */
   ATTR_opts___Option____mandatory(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   return;
@@ -93,11 +97,12 @@ void opts___Option___value__eq(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___Option___value__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./../lib/opts.nit:31 */
+  /* ../lib/opts.nit:31 */
   ATTR_opts___Option____value(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
@@ -112,12 +117,13 @@ val_t opts___Option___value(val_t p0){
   fra.me.meth = LOCATE_opts___Option___value;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./../lib/opts.nit:34 */
+  /* ../lib/opts.nit:34 */
   fra.me.REG[1] = fra.me.REG[0];
-  /* ./../lib/opts.nit:35 */
+  /* ../lib/opts.nit:35 */
   fra.me.REG[1] = ATTR_opts___Option____value(fra.me.REG[1]);
   REGB0 = TAG_Bool((fra.me.REG[1]==NIT_NULL) || VAL_ISA(fra.me.REG[1], VTCOLOR_opts___Option___VALUE(fra.me.REG[0]), VTID_opts___Option___VALUE(fra.me.REG[0]))) /*cast VALUE*/;
   if (UNTAG_Bool(REGB0)) {
@@ -138,9 +144,10 @@ val_t opts___Option___default_value(val_t p0){
   fra.me.meth = LOCATE_opts___Option___default_value;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./../lib/opts.nit:37 */
+  /* ../lib/opts.nit:37 */
   fra.me.REG[0] = ATTR_opts___Option____default_value(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
@@ -154,11 +161,12 @@ void opts___Option___default_value__eq(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___Option___default_value__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./../lib/opts.nit:37 */
+  /* ../lib/opts.nit:37 */
   ATTR_opts___Option____default_value(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
@@ -176,6 +184,7 @@ void opts___Option___init_opt(val_t p0, val_t p1, val_t p2, val_t p3, int* init_
   fra.me.meth = LOCATE_opts___Option___init_opt;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -185,7 +194,7 @@ void opts___Option___init_opt(val_t p0, val_t p1, val_t p2, val_t p3, int* init_
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
   fra.me.REG[3] = p3;
-  /* ./../lib/opts.nit:43 */
+  /* ../lib/opts.nit:43 */
   REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -199,11 +208,11 @@ void opts___Option___init_opt(val_t p0, val_t p1, val_t p2, val_t p3, int* init_
     }
   }
   if (UNTAG_Bool(REGB0)) {
-    /* ./../lib/opts.nit:44 */
+    /* ../lib/opts.nit:44 */
     fra.me.REG[4] = NEW_Array_standard___collection___array___Array___init();
     ATTR_opts___Option____names(fra.me.REG[0]) = fra.me.REG[4];
   } else {
-    /* ./../lib/opts.nit:46 */
+    /* ../lib/opts.nit:46 */
     REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
       nit_abort("Reciever is null", NULL, LOCATE_opts, 46);
@@ -211,14 +220,14 @@ void opts___Option___init_opt(val_t p0, val_t p1, val_t p2, val_t p3, int* init_
     fra.me.REG[3] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[3])(fra.me.REG[3]);
     ATTR_opts___Option____names(fra.me.REG[0]) = fra.me.REG[3];
   }
-  /* ./../lib/opts.nit:48 */
+  /* ../lib/opts.nit:48 */
   ATTR_opts___Option____helptext(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./../lib/opts.nit:49 */
+  /* ../lib/opts.nit:49 */
   REGB0 = TAG_Bool(false);
   ATTR_opts___Option____mandatory(fra.me.REG[0]) = REGB0;
-  /* ./../lib/opts.nit:50 */
+  /* ../lib/opts.nit:50 */
   ATTR_opts___Option____default_value(fra.me.REG[0]) = fra.me.REG[2];
-  /* ./../lib/opts.nit:51 */
+  /* ../lib/opts.nit:51 */
   ATTR_opts___Option____value(fra.me.REG[0]) = fra.me.REG[2];
   stack_frame_head = fra.me.prev;
   init_table[itpos0] = 1;
@@ -234,19 +243,20 @@ void opts___Option___add_aliases(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___Option___add_aliases;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./../lib/opts.nit:54 */
+  /* ../lib/opts.nit:54 */
   fra.me.REG[2] = fra.me.REG[0];
   REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_standard___collection___array___Array, ID_standard___collection___array___Array)) /*cast Array[String]*/;
   if (UNTAG_Bool(REGB0)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_opts, 54);
   }
-  /* ./../lib/opts.nit:55 */
+  /* ../lib/opts.nit:55 */
   REGB0 = TAG_Bool(ATTR_opts___Option____names(fra.me.REG[2])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -267,9 +277,10 @@ val_t opts___Option___to_s(val_t p0){
   fra.me.meth = LOCATE_opts___Option___to_s;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./../lib/opts.nit:58 */
+  /* ../lib/opts.nit:58 */
   REGB0 = TAG_Int(2);
   fra.me.REG[0] = CALL_opts___Option___pretty(fra.me.REG[0])(fra.me.REG[0], REGB0);
   goto label1;
@@ -293,13 +304,14 @@ val_t opts___Option___pretty(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___Option___pretty;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
-  /* ./../lib/opts.nit:63 */
+  /* ../lib/opts.nit:63 */
   if (!once_value_1) {
     fra.me.REG[1] = BOX_NativeString("  ");
     REGB1 = TAG_Int(2);
@@ -309,7 +321,7 @@ val_t opts___Option___pretty(val_t p0, val_t p1){
   } else fra.me.REG[1] = once_value_1;
   fra.me.REG[1] = fra.me.REG[1];
   fra.me.REG[1] = NEW_Buffer_standard___string___Buffer___from(fra.me.REG[1]);
-  /* ./../lib/opts.nit:64 */
+  /* ../lib/opts.nit:64 */
   REGB1 = TAG_Bool(ATTR_opts___Option____names(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
@@ -326,7 +338,7 @@ val_t opts___Option___pretty(val_t p0, val_t p1){
   fra.me.REG[3] = fra.me.REG[3];
   fra.me.REG[3] = CALL_standard___string___Collection___join(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
   CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  /* ./../lib/opts.nit:65 */
+  /* ../lib/opts.nit:65 */
   if (!once_value_3) {
     fra.me.REG[3] = BOX_NativeString("  ");
     REGB1 = TAG_Int(2);
@@ -336,25 +348,25 @@ val_t opts___Option___pretty(val_t p0, val_t p1){
   } else fra.me.REG[3] = once_value_3;
   fra.me.REG[3] = fra.me.REG[3];
   CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
-  /* ./../lib/standard//collection//array.nit:24 */
+  /* ../lib/standard/collection/array.nit:24 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
   }
   REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-  /* ./../lib/standard//kernel.nit:237 */
+  /* ../lib/standard/kernel.nit:237 */
   REGB1 = TAG_Int(UNTAG_Int(REGB0)-UNTAG_Int(REGB1));
-  /* ./../lib/opts.nit:67 */
+  /* ../lib/opts.nit:67 */
   REGB0 = TAG_Int(0);
   REGB2 = TAG_Bool(VAL_ISA(REGB0, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
   if (UNTAG_Bool(REGB2)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ./../lib/standard//kernel.nit:234 */
+  /* ../lib/standard/kernel.nit:234 */
   REGB0 = TAG_Bool(UNTAG_Int(REGB1)>UNTAG_Int(REGB0));
-  /* ./../lib/opts.nit:67 */
+  /* ../lib/opts.nit:67 */
   if (UNTAG_Bool(REGB0)) {
     if (!once_value_4) {
       fra.me.REG[3] = BOX_NativeString(" ");
@@ -367,10 +379,10 @@ val_t opts___Option___pretty(val_t p0, val_t p1){
     fra.me.REG[3] = CALL_standard___string___String_____star(fra.me.REG[3])(fra.me.REG[3], REGB1);
     CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[3]);
   }
-  /* ./../lib/opts.nit:68 */
+  /* ../lib/opts.nit:68 */
   fra.me.REG[0] = CALL_opts___Option___helptext(fra.me.REG[0])(fra.me.REG[0]);
   CALL_standard___collection___abstract_collection___Sequence___append(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[0]);
-  /* ./../lib/opts.nit:70 */
+  /* ../lib/opts.nit:70 */
   fra.me.REG[1] = CALL_standard___string___Object___to_s(fra.me.REG[1])(fra.me.REG[1]);
   goto label5;
   label5: while(0);
@@ -391,13 +403,14 @@ val_t opts___Option___pretty_default(val_t p0){
   fra.me.meth = LOCATE_opts___Option___pretty_default;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./../lib/opts.nit:75 */
+  /* ../lib/opts.nit:75 */
   fra.me.REG[0] = CALL_opts___Option___default_value(fra.me.REG[0])(fra.me.REG[0]);
-  /* ./../lib/opts.nit:76 */
+  /* ../lib/opts.nit:76 */
   REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -437,7 +450,7 @@ val_t opts___Option___pretty_default(val_t p0){
     fra.me.REG[1] = CALL_standard___string___Object___to_s(fra.me.REG[1])(fra.me.REG[1]);
     goto label3;
   }
-  /* ./../lib/opts.nit:77 */
+  /* ../lib/opts.nit:77 */
   if (!once_value_4) {
     fra.me.REG[0] = BOX_NativeString("");
     REGB0 = TAG_Int(0);
@@ -461,7 +474,8 @@ void opts___Option___read_param(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___Option___read_param;
   fra.me.has_broke = 0;
   fra.me.REG_size = 0;
-  /* ./../lib/opts.nit:80 */
+  fra.me.nitni_local_ref_head = NULL;
+  /* ../lib/opts.nit:80 */
   nit_abort("Deferred method called", NULL, LOCATE_opts, 80);
   stack_frame_head = fra.me.prev;
   return;
@@ -477,11 +491,12 @@ void opts___OptionText___init(val_t p0, val_t p1, int* init_table){
   fra.me.meth = LOCATE_opts___OptionText___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./../lib/opts.nit:86 */
+  /* ../lib/opts.nit:86 */
   CALL_opts___Option___init_opt(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], NIT_NULL, NIT_NULL, init_table);
   stack_frame_head = fra.me.prev;
   init_table[itpos1] = 1;
@@ -497,10 +512,11 @@ val_t opts___OptionText___pretty(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___OptionText___pretty;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
-  /* ./../lib/opts.nit:88 */
+  /* ../lib/opts.nit:88 */
   fra.me.REG[0] = CALL_standard___string___Object___to_s(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
   label1: while(0);
@@ -516,9 +532,10 @@ val_t opts___OptionText___to_s(val_t p0){
   fra.me.meth = LOCATE_opts___OptionText___to_s;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./../lib/opts.nit:90 */
+  /* ../lib/opts.nit:90 */
   fra.me.REG[0] = CALL_opts___Option___helptext(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
   label1: while(0);
@@ -537,6 +554,7 @@ void opts___OptionBool___init(val_t p0, val_t p1, val_t p2, int* init_table){
   fra.me.meth = LOCATE_opts___OptionBool___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -544,7 +562,7 @@ void opts___OptionBool___init(val_t p0, val_t p1, val_t p2, int* init_table){
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ./../lib/opts.nit:97 */
+  /* ../lib/opts.nit:97 */
   fra.me.REG[3] = fra.me.REG[0];
   REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[2], COLOR_standard___collection___array___Array, ID_standard___collection___array___Array)) /*cast Array[String]*/;
   if (UNTAG_Bool(REGB0)) {
@@ -567,11 +585,12 @@ void opts___OptionBool___read_param(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___OptionBool___read_param;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./../lib/opts.nit:99 */
+  /* ../lib/opts.nit:99 */
   REGB0 = TAG_Bool(true);
   CALL_opts___Option___value__eq(fra.me.REG[0])(fra.me.REG[0], REGB0);
   stack_frame_head = fra.me.prev;
@@ -589,6 +608,7 @@ void opts___OptionCount___init(val_t p0, val_t p1, val_t p2, int* init_table){
   fra.me.meth = LOCATE_opts___OptionCount___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -596,7 +616,7 @@ void opts___OptionCount___init(val_t p0, val_t p1, val_t p2, int* init_table){
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ./../lib/opts.nit:106 */
+  /* ../lib/opts.nit:106 */
   fra.me.REG[3] = fra.me.REG[0];
   REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[2], COLOR_standard___collection___array___Array, ID_standard___collection___array___Array)) /*cast Array[String]*/;
   if (UNTAG_Bool(REGB0)) {
@@ -619,16 +639,17 @@ void opts___OptionCount___read_param(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___OptionCount___read_param;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./../lib/opts.nit:108 */
+  /* ../lib/opts.nit:108 */
   fra.me.REG[1] = CALL_opts___Option___value(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = TAG_Int(1);
-  /* ./../lib/standard//kernel.nit:235 */
+  /* ../lib/standard/kernel.nit:235 */
   REGB0 = TAG_Int(UNTAG_Int(fra.me.REG[1])+UNTAG_Int(REGB0));
-  /* ./../lib/opts.nit:108 */
+  /* ../lib/opts.nit:108 */
   CALL_opts___Option___value__eq(fra.me.REG[0])(fra.me.REG[0], REGB0);
   stack_frame_head = fra.me.prev;
   return;
@@ -642,7 +663,8 @@ val_t opts___OptionParameter___convert(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___OptionParameter___convert;
   fra.me.has_broke = 0;
   fra.me.REG_size = 0;
-  /* ./../lib/opts.nit:114 */
+  fra.me.nitni_local_ref_head = NULL;
+  /* ../lib/opts.nit:114 */
   nit_abort("Deferred method called", NULL, LOCATE_opts, 114);
   stack_frame_head = fra.me.prev;
   return NIT_NULL;
@@ -657,19 +679,20 @@ void opts___OptionParameter___read_param(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___OptionParameter___read_param;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./../lib/opts.nit:118 */
+  /* ../lib/opts.nit:118 */
   REGB0 = CALL_standard___collection___abstract_collection___Iterator___is_ok(fra.me.REG[1])(fra.me.REG[1]);
   if (UNTAG_Bool(REGB0)) {
-    /* ./../lib/opts.nit:119 */
+    /* ../lib/opts.nit:119 */
     fra.me.REG[2] = CALL_standard___collection___abstract_collection___Iterator___item(fra.me.REG[1])(fra.me.REG[1]);
     fra.me.REG[2] = CALL_opts___OptionParameter___convert(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2]);
     CALL_opts___Option___value__eq(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[2]);
-    /* ./../lib/opts.nit:120 */
+    /* ../lib/opts.nit:120 */
     CALL_standard___collection___abstract_collection___Iterator___next(fra.me.REG[1])(fra.me.REG[1]);
   }
   stack_frame_head = fra.me.prev;
@@ -686,6 +709,7 @@ void opts___OptionParameter___init_opt(val_t p0, val_t p1, val_t p2, val_t p3, i
   fra.me.meth = LOCATE_opts___OptionParameter___init_opt;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -694,7 +718,7 @@ void opts___OptionParameter___init_opt(val_t p0, val_t p1, val_t p2, val_t p3, i
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
   fra.me.REG[3] = p3;
-  /* ./../lib/opts.nit:126 */
+  /* ../lib/opts.nit:126 */
   CALL_opts___Option___init_opt(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], fra.me.REG[2], fra.me.REG[3], init_table);
   stack_frame_head = fra.me.prev;
   init_table[itpos4] = 1;
@@ -712,6 +736,7 @@ void opts___OptionString___init(val_t p0, val_t p1, val_t p2, int* init_table){
   fra.me.meth = LOCATE_opts___OptionString___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -719,7 +744,7 @@ void opts___OptionString___init(val_t p0, val_t p1, val_t p2, int* init_table){
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ./../lib/opts.nit:133 */
+  /* ../lib/opts.nit:133 */
   fra.me.REG[3] = fra.me.REG[0];
   REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[2], COLOR_standard___collection___array___Array, ID_standard___collection___array___Array)) /*cast Array[String]*/;
   if (UNTAG_Bool(REGB0)) {
@@ -740,11 +765,12 @@ val_t opts___OptionString___convert(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___OptionString___convert;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./../lib/opts.nit:135 */
+  /* ../lib/opts.nit:135 */
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
@@ -769,6 +795,7 @@ void opts___OptionEnum___init(val_t p0, val_t p1, val_t p2, val_t p3, val_t p4,
   fra.me.meth = LOCATE_opts___OptionEnum___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 6;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -780,38 +807,38 @@ void opts___OptionEnum___init(val_t p0, val_t p1, val_t p2, val_t p3, val_t p4,
   fra.me.REG[2] = p2;
   REGB0 = p3;
   fra.me.REG[3] = p4;
-  /* ./../lib/opts.nit:143 */
+  /* ../lib/opts.nit:143 */
   fra.me.REG[4] = fra.me.REG[0];
   REGB1 = TAG_Bool(VAL_ISA(fra.me.REG[3], COLOR_standard___collection___array___Array, ID_standard___collection___array___Array)) /*cast Array[String]*/;
   if (UNTAG_Bool(REGB1)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_opts, 143);
   }
-  /* ./../lib/standard//collection//array.nit:24 */
+  /* ../lib/standard/collection/array.nit:24 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
   }
   REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-  /* ./../lib/opts.nit:145 */
+  /* ../lib/opts.nit:145 */
   REGB2 = TAG_Int(0);
   REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
   if (UNTAG_Bool(REGB3)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ./../lib/standard//kernel.nit:234 */
+  /* ../lib/standard/kernel.nit:234 */
   REGB2 = TAG_Bool(UNTAG_Int(REGB1)>UNTAG_Int(REGB2));
-  /* ./../lib/opts.nit:145 */
+  /* ../lib/opts.nit:145 */
   if (UNTAG_Bool(REGB2)) {
   } else {
     nit_abort("Assert failed", NULL, LOCATE_opts, 145);
   }
-  /* ./../lib/opts.nit:146 */
+  /* ../lib/opts.nit:146 */
   fra.me.REG[0] = CALL_standard___collection___array___Collection___to_a(fra.me.REG[1])(fra.me.REG[1]);
   ATTR_opts___OptionEnum____values(fra.me.REG[4]) = fra.me.REG[0];
-  /* ./../lib/opts.nit:147 */
+  /* ../lib/opts.nit:147 */
   REGB2 = TAG_Int(5);
   fra.me.REG[0] = NEW_Array_standard___collection___array___Array___with_capacity(REGB2);
   if (!once_value_1) {
@@ -868,11 +895,12 @@ val_t opts___OptionEnum___convert(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___OptionEnum___convert;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./../lib/opts.nit:152 */
+  /* ../lib/opts.nit:152 */
   REGB0 = TAG_Bool(ATTR_opts___OptionEnum____values(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -880,7 +908,7 @@ val_t opts___OptionEnum___convert(val_t p0, val_t p1){
   }
   fra.me.REG[0] = ATTR_opts___OptionEnum____values(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___abstract_collection___SequenceRead___index_of(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ./../lib/opts.nit:153 */
+  /* ../lib/opts.nit:153 */
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
@@ -898,10 +926,11 @@ val_t opts___OptionEnum___value_name(val_t p0){
   fra.me.meth = LOCATE_opts___OptionEnum___value_name;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./../lib/opts.nit:156 */
+  /* ../lib/opts.nit:156 */
   REGB0 = TAG_Bool(ATTR_opts___OptionEnum____values(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -909,18 +938,18 @@ val_t opts___OptionEnum___value_name(val_t p0){
   }
   fra.me.REG[1] = ATTR_opts___OptionEnum____values(fra.me.REG[0]);
   fra.me.REG[0] = CALL_opts___Option___value(fra.me.REG[0])(fra.me.REG[0]);
-  /* ./../lib/standard//collection//array.nit:278 */
+  /* ../lib/standard/collection/array.nit:278 */
   REGB0 = fra.me.REG[0];
-  /* ./../lib/standard//collection//array.nit:280 */
+  /* ../lib/standard/collection/array.nit:280 */
   REGB1 = TAG_Int(0);
   REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
   if (UNTAG_Bool(REGB2)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ./../lib/standard//kernel.nit:233 */
+  /* ../lib/standard/kernel.nit:233 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-  /* ./../lib/standard//collection//array.nit:280 */
+  /* ../lib/standard/collection/array.nit:280 */
   if (UNTAG_Bool(REGB1)) {
     REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
@@ -933,29 +962,29 @@ val_t opts___OptionEnum___value_name(val_t p0){
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ./../lib/standard//kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:232 */
     REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
   } else {
-    /* ./../lib/standard//collection//array.nit:280 */
+    /* ../lib/standard/collection/array.nit:280 */
     REGB2 = TAG_Bool(false);
     REGB1 = REGB2;
   }
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Assert %s  failed", "'index'", LOCATE_standard___collection___array, 280);
+    nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
   }
-  /* ./../lib/standard//collection//array.nit:281 */
+  /* ../lib/standard/collection/array.nit:281 */
   fra.me.REG[1] = ATTR_standard___collection___array___Array____items(fra.me.REG[1]);
   REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
     nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
   }
-  /* ./../lib/standard//collection//array.nit:718 */
+  /* ../lib/standard/collection/array.nit:718 */
   fra.me.REG[1] = ((Nit_NativeArray)fra.me.REG[1])->val[UNTAG_Int(REGB0)];
-  /* ./../lib/standard//collection//array.nit:281 */
+  /* ../lib/standard/collection/array.nit:281 */
   goto label1;
   label1: while(0);
-  /* ./../lib/opts.nit:156 */
+  /* ../lib/opts.nit:156 */
   goto label2;
   label2: while(0);
   stack_frame_head = fra.me.prev;
@@ -976,14 +1005,15 @@ val_t opts___OptionEnum___pretty_default(val_t p0){
   fra.me.meth = LOCATE_opts___OptionEnum___pretty_default;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./../lib/opts.nit:158 */
+  /* ../lib/opts.nit:158 */
   fra.me.REG[1] = fra.me.REG[0];
-  /* ./../lib/opts.nit:160 */
+  /* ../lib/opts.nit:160 */
   fra.me.REG[2] = CALL_opts___Option___default_value(fra.me.REG[1])(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
@@ -993,15 +1023,15 @@ val_t opts___OptionEnum___pretty_default(val_t p0){
       REGB1 = TAG_Bool(false);
       REGB0 = REGB1;
     } else {
-      /* ./../lib/standard//kernel.nit:227 */
+      /* ../lib/standard/kernel.nit:227 */
       REGB1 = TAG_Bool((fra.me.REG[2])==(NIT_NULL));
-      /* ./../lib/opts.nit:160 */
+      /* ../lib/opts.nit:160 */
       REGB0 = REGB1;
     }
   }
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    /* ./../lib/opts.nit:161 */
+    /* ../lib/opts.nit:161 */
     REGB0 = TAG_Int(3);
     fra.me.REG[2] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
     if (!once_value_1) {
@@ -1025,18 +1055,18 @@ val_t opts___OptionEnum___pretty_default(val_t p0){
     } else {
       nit_abort("Cast failed", NULL, LOCATE_opts, 161);
     }
-    /* ./../lib/standard//collection//array.nit:278 */
+    /* ../lib/standard/collection/array.nit:278 */
     REGB0 = fra.me.REG[1];
-    /* ./../lib/standard//collection//array.nit:280 */
+    /* ../lib/standard/collection/array.nit:280 */
     REGB1 = TAG_Int(0);
     REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
     if (UNTAG_Bool(REGB2)) {
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ./../lib/standard//kernel.nit:233 */
+    /* ../lib/standard/kernel.nit:233 */
     REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-    /* ./../lib/standard//collection//array.nit:280 */
+    /* ../lib/standard/collection/array.nit:280 */
     if (UNTAG_Bool(REGB1)) {
       REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
@@ -1049,29 +1079,29 @@ val_t opts___OptionEnum___pretty_default(val_t p0){
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ./../lib/standard//kernel.nit:232 */
+      /* ../lib/standard/kernel.nit:232 */
       REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
     } else {
-      /* ./../lib/standard//collection//array.nit:280 */
+      /* ../lib/standard/collection/array.nit:280 */
       REGB2 = TAG_Bool(false);
       REGB1 = REGB2;
     }
     if (UNTAG_Bool(REGB1)) {
     } else {
-      nit_abort("Assert %s  failed", "'index'", LOCATE_standard___collection___array, 280);
+      nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
     }
-    /* ./../lib/standard//collection//array.nit:281 */
+    /* ../lib/standard/collection/array.nit:281 */
     fra.me.REG[3] = ATTR_standard___collection___array___Array____items(fra.me.REG[3]);
     REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
       nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
     }
-    /* ./../lib/standard//collection//array.nit:718 */
+    /* ../lib/standard/collection/array.nit:718 */
     fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[3])->val[UNTAG_Int(REGB0)];
-    /* ./../lib/standard//collection//array.nit:281 */
+    /* ../lib/standard/collection/array.nit:281 */
     goto label2;
     label2: while(0);
-    /* ./../lib/opts.nit:161 */
+    /* ../lib/opts.nit:161 */
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
     if (!once_value_3) {
       fra.me.REG[3] = BOX_NativeString(")");
@@ -1085,7 +1115,7 @@ val_t opts___OptionEnum___pretty_default(val_t p0){
     fra.me.REG[2] = CALL_standard___string___Object___to_s(fra.me.REG[2])(fra.me.REG[2]);
     goto label4;
   } else {
-    /* ./../lib/opts.nit:163 */
+    /* ../lib/opts.nit:163 */
     if (!once_value_5) {
       fra.me.REG[3] = BOX_NativeString("");
       REGB0 = TAG_Int(0);
@@ -1114,6 +1144,7 @@ void opts___OptionInt___init(val_t p0, val_t p1, val_t p2, val_t p3, int* init_t
   fra.me.meth = LOCATE_opts___OptionInt___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -1122,7 +1153,7 @@ void opts___OptionInt___init(val_t p0, val_t p1, val_t p2, val_t p3, int* init_t
   fra.me.REG[1] = p1;
   REGB0 = p2;
   fra.me.REG[2] = p3;
-  /* ./../lib/opts.nit:172 */
+  /* ../lib/opts.nit:172 */
   fra.me.REG[3] = fra.me.REG[0];
   REGB1 = TAG_Bool(VAL_ISA(fra.me.REG[2], COLOR_standard___collection___array___Array, ID_standard___collection___array___Array)) /*cast Array[String]*/;
   if (UNTAG_Bool(REGB1)) {
@@ -1144,11 +1175,12 @@ val_t opts___OptionInt___convert(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___OptionInt___convert;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./../lib/opts.nit:174 */
+  /* ../lib/opts.nit:174 */
   REGB0 = CALL_standard___string___AbstractString___to_i(fra.me.REG[1])(fra.me.REG[1]);
   goto label1;
   label1: while(0);
@@ -1167,6 +1199,7 @@ void opts___OptionArray___init(val_t p0, val_t p1, val_t p2, int* init_table){
   fra.me.meth = LOCATE_opts___OptionArray___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -1174,17 +1207,17 @@ void opts___OptionArray___init(val_t p0, val_t p1, val_t p2, int* init_table){
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ./../lib/opts.nit:181 */
+  /* ../lib/opts.nit:181 */
   fra.me.REG[3] = fra.me.REG[0];
   REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[2], COLOR_standard___collection___array___Array, ID_standard___collection___array___Array)) /*cast Array[String]*/;
   if (UNTAG_Bool(REGB0)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_opts, 181);
   }
-  /* ./../lib/opts.nit:183 */
+  /* ../lib/opts.nit:183 */
   fra.me.REG[0] = NEW_Array_standard___collection___array___Array___init();
   ATTR_opts___OptionArray____values(fra.me.REG[3]) = fra.me.REG[0];
-  /* ./../lib/opts.nit:184 */
+  /* ../lib/opts.nit:184 */
   REGB0 = TAG_Bool(ATTR_opts___OptionArray____values(fra.me.REG[3])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -1206,12 +1239,13 @@ val_t opts___OptionArray___convert(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___OptionArray___convert;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./../lib/opts.nit:190 */
+  /* ../lib/opts.nit:190 */
   REGB0 = TAG_Bool(ATTR_opts___OptionArray____values(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -1219,7 +1253,7 @@ val_t opts___OptionArray___convert(val_t p0, val_t p1){
   }
   fra.me.REG[2] = ATTR_opts___OptionArray____values(fra.me.REG[0]);
   CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-  /* ./../lib/opts.nit:191 */
+  /* ../lib/opts.nit:191 */
   REGB0 = TAG_Bool(ATTR_opts___OptionArray____values(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -1241,9 +1275,10 @@ val_t opts___OptionContext___options(val_t p0){
   fra.me.meth = LOCATE_opts___OptionContext___options;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./../lib/opts.nit:196 */
+  /* ../lib/opts.nit:196 */
   REGB0 = TAG_Bool(ATTR_opts___OptionContext____options(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -1263,9 +1298,10 @@ val_t opts___OptionContext___rest(val_t p0){
   fra.me.meth = LOCATE_opts___OptionContext___rest;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./../lib/opts.nit:197 */
+  /* ../lib/opts.nit:197 */
   REGB0 = TAG_Bool(ATTR_opts___OptionContext____rest(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
@@ -1290,6 +1326,7 @@ void opts___OptionContext___usage(val_t p0){
   fra.me.meth = LOCATE_opts___OptionContext___usage;
   fra.me.has_broke = 0;
   fra.me.REG_size = 6;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -1297,29 +1334,29 @@ void opts___OptionContext___usage(val_t p0){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[5] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./../lib/opts.nit:203 */
+  /* ../lib/opts.nit:203 */
   REGB0 = TAG_Int(1);
-  /* ./../lib/opts.nit:204 */
+  /* ../lib/opts.nit:204 */
   REGB1 = TAG_Bool(ATTR_opts___OptionContext____options(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     nit_abort("Uninitialized attribute %s", "_options", LOCATE_opts, 204);
   }
   fra.me.REG[1] = ATTR_opts___OptionContext____options(fra.me.REG[0]);
-  /* ./../lib/standard//collection//array.nit:269 */
+  /* ../lib/standard/collection/array.nit:269 */
   REGB1 = TAG_Int(0);
-  /* ./../lib/standard//collection//array.nit:270 */
+  /* ../lib/standard/collection/array.nit:270 */
   REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
   if (UNTAG_Bool(REGB2)) {
   } else {
     nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
   }
   REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-  /* ./../lib/standard//collection//array.nit:271 */
+  /* ../lib/standard/collection/array.nit:271 */
   fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[1]);
-  /* ./../lib/standard//collection//array.nit:272 */
+  /* ../lib/standard/collection/array.nit:272 */
   while(1) {
-    /* ./../lib/standard//collection//array.nit:24 */
+    /* ../lib/standard/collection/array.nit:24 */
     REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
     if (UNTAG_Bool(REGB2)) {
     } else {
@@ -1331,35 +1368,35 @@ void opts___OptionContext___usage(val_t p0){
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ./../lib/standard//kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:232 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB2));
-    /* ./../lib/standard//collection//array.nit:272 */
+    /* ../lib/standard/collection/array.nit:272 */
     if (UNTAG_Bool(REGB2)) {
-      /* ./../lib/standard//collection//array.nit:273 */
+      /* ../lib/standard/collection/array.nit:273 */
       REGB2 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
         nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
       }
-      /* ./../lib/standard//collection//array.nit:718 */
+      /* ../lib/standard/collection/array.nit:718 */
       fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB1)];
-      /* ./../lib/opts.nit:205 */
+      /* ../lib/opts.nit:205 */
       REGB2 = TAG_Int(3);
-      /* ./../lib/opts.nit:206 */
+      /* ../lib/opts.nit:206 */
       fra.me.REG[3] = CALL_opts___Option___names(fra.me.REG[3])(fra.me.REG[3]);
-      /* ./../lib/standard//collection//array.nit:269 */
+      /* ../lib/standard/collection/array.nit:269 */
       REGB3 = TAG_Int(0);
-      /* ./../lib/standard//collection//array.nit:270 */
+      /* ../lib/standard/collection/array.nit:270 */
       REGB4 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
       if (UNTAG_Bool(REGB4)) {
       } else {
         nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
       }
       REGB4 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
-      /* ./../lib/standard//collection//array.nit:271 */
+      /* ../lib/standard/collection/array.nit:271 */
       fra.me.REG[4] = ATTR_standard___collection___array___Array____items(fra.me.REG[3]);
-      /* ./../lib/standard//collection//array.nit:272 */
+      /* ../lib/standard/collection/array.nit:272 */
       while(1) {
-        /* ./../lib/standard//collection//array.nit:24 */
+        /* ../lib/standard/collection/array.nit:24 */
         REGB4 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
         if (UNTAG_Bool(REGB4)) {
         } else {
@@ -1371,39 +1408,39 @@ void opts___OptionContext___usage(val_t p0){
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ./../lib/standard//kernel.nit:232 */
+        /* ../lib/standard/kernel.nit:232 */
         REGB4 = TAG_Bool(UNTAG_Int(REGB3)<UNTAG_Int(REGB4));
-        /* ./../lib/standard//collection//array.nit:272 */
+        /* ../lib/standard/collection/array.nit:272 */
         if (UNTAG_Bool(REGB4)) {
-          /* ./../lib/standard//collection//array.nit:273 */
+          /* ../lib/standard/collection/array.nit:273 */
           REGB4 = TAG_Bool(fra.me.REG[4]==NIT_NULL);
           if (UNTAG_Bool(REGB4)) {
             nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
           }
-          /* ./../lib/standard//collection//array.nit:718 */
+          /* ../lib/standard/collection/array.nit:718 */
           fra.me.REG[5] = ((Nit_NativeArray)fra.me.REG[4])->val[UNTAG_Int(REGB3)];
-          /* ./../lib/standard//collection//array.nit:24 */
+          /* ../lib/standard/collection/array.nit:24 */
           REGB4 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[5])!=NIT_NULL);
           if (UNTAG_Bool(REGB4)) {
           } else {
             nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
           }
           REGB4 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[5]);
-          /* ./../lib/opts.nit:207 */
+          /* ../lib/opts.nit:207 */
           REGB5 = TAG_Int(2);
-          /* ./../lib/standard//kernel.nit:235 */
+          /* ../lib/standard/kernel.nit:235 */
           REGB5 = TAG_Int(UNTAG_Int(REGB4)+UNTAG_Int(REGB5));
           REGB5 = TAG_Int(UNTAG_Int(REGB2)+UNTAG_Int(REGB5));
-          /* ./../lib/opts.nit:207 */
+          /* ../lib/opts.nit:207 */
           REGB2 = REGB5;
-          /* ./../lib/standard//collection//array.nit:274 */
+          /* ../lib/standard/collection/array.nit:274 */
           REGB5 = TAG_Int(1);
-          /* ./../lib/standard//kernel.nit:235 */
+          /* ../lib/standard/kernel.nit:235 */
           REGB5 = TAG_Int(UNTAG_Int(REGB3)+UNTAG_Int(REGB5));
-          /* ./../lib/standard//collection//array.nit:274 */
+          /* ../lib/standard/collection/array.nit:274 */
           REGB3 = REGB5;
         } else {
-          /* ./../lib/standard//collection//array.nit:272 */
+          /* ../lib/standard/collection/array.nit:272 */
           goto label1;
         }
       }
@@ -1413,45 +1450,45 @@ void opts___OptionContext___usage(val_t p0){
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ./../lib/standard//kernel.nit:232 */
+      /* ../lib/standard/kernel.nit:232 */
       REGB3 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB2));
-      /* ./../lib/opts.nit:209 */
+      /* ../lib/opts.nit:209 */
       if (UNTAG_Bool(REGB3)) {
         REGB0 = REGB2;
       }
-      /* ./../lib/standard//collection//array.nit:274 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB2 = TAG_Int(1);
-      /* ./../lib/standard//kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:235 */
       REGB2 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB2));
-      /* ./../lib/standard//collection//array.nit:274 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB1 = REGB2;
     } else {
-      /* ./../lib/standard//collection//array.nit:272 */
+      /* ../lib/standard/collection/array.nit:272 */
       goto label2;
     }
   }
   label2: while(0);
-  /* ./../lib/opts.nit:212 */
+  /* ../lib/opts.nit:212 */
   REGB1 = TAG_Bool(ATTR_opts___OptionContext____options(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     nit_abort("Uninitialized attribute %s", "_options", LOCATE_opts, 212);
   }
   fra.me.REG[2] = ATTR_opts___OptionContext____options(fra.me.REG[0]);
-  /* ./../lib/standard//collection//array.nit:269 */
+  /* ../lib/standard/collection/array.nit:269 */
   REGB1 = TAG_Int(0);
-  /* ./../lib/standard//collection//array.nit:270 */
+  /* ../lib/standard/collection/array.nit:270 */
   REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
   if (UNTAG_Bool(REGB2)) {
   } else {
     nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
   }
   REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
-  /* ./../lib/standard//collection//array.nit:271 */
+  /* ../lib/standard/collection/array.nit:271 */
   fra.me.REG[1] = ATTR_standard___collection___array___Array____items(fra.me.REG[2]);
-  /* ./../lib/standard//collection//array.nit:272 */
+  /* ../lib/standard/collection/array.nit:272 */
   while(1) {
-    /* ./../lib/standard//collection//array.nit:24 */
+    /* ../lib/standard/collection/array.nit:24 */
     REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
     if (UNTAG_Bool(REGB2)) {
     } else {
@@ -1463,28 +1500,28 @@ void opts___OptionContext___usage(val_t p0){
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ./../lib/standard//kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:232 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB2));
-    /* ./../lib/standard//collection//array.nit:272 */
+    /* ../lib/standard/collection/array.nit:272 */
     if (UNTAG_Bool(REGB2)) {
-      /* ./../lib/standard//collection//array.nit:273 */
+      /* ../lib/standard/collection/array.nit:273 */
       REGB2 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
         nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
       }
-      /* ./../lib/standard//collection//array.nit:718 */
+      /* ../lib/standard/collection/array.nit:718 */
       fra.me.REG[4] = ((Nit_NativeArray)fra.me.REG[1])->val[UNTAG_Int(REGB1)];
-      /* ./../lib/opts.nit:213 */
+      /* ../lib/opts.nit:213 */
       fra.me.REG[4] = CALL_opts___Option___pretty(fra.me.REG[4])(fra.me.REG[4], REGB0);
       CALL_standard___file___Object___print(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[4]);
-      /* ./../lib/standard//collection//array.nit:274 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB2 = TAG_Int(1);
-      /* ./../lib/standard//kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:235 */
       REGB2 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB2));
-      /* ./../lib/standard//collection//array.nit:274 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB1 = REGB2;
     } else {
-      /* ./../lib/standard//collection//array.nit:272 */
+      /* ../lib/standard/collection/array.nit:272 */
       goto label3;
     }
   }
@@ -1501,13 +1538,14 @@ void opts___OptionContext___parse(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___OptionContext___parse;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./../lib/opts.nit:220 */
+  /* ../lib/opts.nit:220 */
   fra.me.REG[1] = CALL_standard___collection___abstract_collection___Collection___iterator(fra.me.REG[1])(fra.me.REG[1]);
-  /* ./../lib/opts.nit:221 */
+  /* ../lib/opts.nit:221 */
   CALL_opts___OptionContext___parse_intern(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
   stack_frame_head = fra.me.prev;
   return;
@@ -1525,6 +1563,7 @@ void opts___OptionContext___parse_intern(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___OptionContext___parse_intern;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -1532,18 +1571,18 @@ void opts___OptionContext___parse_intern(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./../lib/opts.nit:226 */
+  /* ../lib/opts.nit:226 */
   REGB0 = TAG_Bool(true);
-  /* ./../lib/opts.nit:227 */
+  /* ../lib/opts.nit:227 */
   CALL_opts___OptionContext___build(fra.me.REG[0])(fra.me.REG[0]);
-  /* ./../lib/opts.nit:228 */
+  /* ../lib/opts.nit:228 */
   REGB1 = TAG_Bool(ATTR_opts___OptionContext____rest(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     nit_abort("Uninitialized attribute %s", "_rest", LOCATE_opts, 228);
   }
   fra.me.REG[2] = ATTR_opts___OptionContext____rest(fra.me.REG[0]);
-  /* ./../lib/opts.nit:230 */
+  /* ../lib/opts.nit:230 */
   while(1) {
     if (UNTAG_Bool(REGB0)) {
       REGB1 = CALL_standard___collection___abstract_collection___Iterator___is_ok(fra.me.REG[1])(fra.me.REG[1]);
@@ -1552,9 +1591,9 @@ void opts___OptionContext___parse_intern(val_t p0, val_t p1){
       REGB1 = REGB2;
     }
     if (UNTAG_Bool(REGB1)) {
-      /* ./../lib/opts.nit:231 */
+      /* ../lib/opts.nit:231 */
       fra.me.REG[3] = CALL_standard___collection___abstract_collection___Iterator___item(fra.me.REG[1])(fra.me.REG[1]);
-      /* ./../lib/opts.nit:232 */
+      /* ../lib/opts.nit:232 */
       if (!once_value_1) {
         fra.me.REG[4] = BOX_NativeString("--");
         REGB1 = TAG_Int(2);
@@ -1570,16 +1609,16 @@ void opts___OptionContext___parse_intern(val_t p0, val_t p1){
         REGB1 = REGB2;
       }
       if (UNTAG_Bool(REGB1)) {
-        /* ./../lib/opts.nit:233 */
+        /* ../lib/opts.nit:233 */
         CALL_standard___collection___abstract_collection___Iterator___next(fra.me.REG[1])(fra.me.REG[1]);
-        /* ./../lib/opts.nit:234 */
+        /* ../lib/opts.nit:234 */
         fra.me.REG[4] = CALL_standard___collection___array___Iterator___to_a(fra.me.REG[1])(fra.me.REG[1]);
         CALL_standard___collection___abstract_collection___SimpleCollection___add_all(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[4]);
-        /* ./../lib/opts.nit:235 */
+        /* ../lib/opts.nit:235 */
         REGB1 = TAG_Bool(false);
         REGB0 = REGB1;
       } else {
-        /* ./../lib/opts.nit:237 */
+        /* ../lib/opts.nit:237 */
         REGB1 = TAG_Bool(ATTR_opts___OptionContext____optmap(fra.me.REG[0])!=NIT_NULL);
         if (UNTAG_Bool(REGB1)) {
         } else {
@@ -1588,7 +1627,7 @@ void opts___OptionContext___parse_intern(val_t p0, val_t p1){
         fra.me.REG[4] = ATTR_opts___OptionContext____optmap(fra.me.REG[0]);
         REGB1 = CALL_standard___collection___abstract_collection___MapRead___has_key(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
         if (UNTAG_Bool(REGB1)) {
-          /* ./../lib/opts.nit:238 */
+          /* ../lib/opts.nit:238 */
           REGB1 = TAG_Bool(ATTR_opts___OptionContext____optmap(fra.me.REG[0])!=NIT_NULL);
           if (UNTAG_Bool(REGB1)) {
           } else {
@@ -1596,20 +1635,20 @@ void opts___OptionContext___parse_intern(val_t p0, val_t p1){
           }
           fra.me.REG[4] = ATTR_opts___OptionContext____optmap(fra.me.REG[0]);
           fra.me.REG[3] = CALL_standard___collection___abstract_collection___MapRead_____bra(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-          /* ./../lib/opts.nit:239 */
+          /* ../lib/opts.nit:239 */
           CALL_standard___collection___abstract_collection___Iterator___next(fra.me.REG[1])(fra.me.REG[1]);
-          /* ./../lib/opts.nit:240 */
+          /* ../lib/opts.nit:240 */
           CALL_opts___Option___read_param(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1]);
         } else {
-          /* ./../lib/opts.nit:242 */
+          /* ../lib/opts.nit:242 */
           fra.me.REG[3] = CALL_standard___collection___abstract_collection___Iterator___item(fra.me.REG[1])(fra.me.REG[1]);
           CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
-          /* ./../lib/opts.nit:243 */
+          /* ../lib/opts.nit:243 */
           CALL_standard___collection___abstract_collection___Iterator___next(fra.me.REG[1])(fra.me.REG[1]);
         }
       }
     } else {
-      /* ./../lib/opts.nit:230 */
+      /* ../lib/opts.nit:230 */
       goto label2;
     }
   }
@@ -1629,6 +1668,7 @@ void opts___OptionContext___add_option(val_t p0, val_t p1){
   fra.me.meth = LOCATE_opts___OptionContext___add_option;
   fra.me.has_broke = 0;
   fra.me.REG_size = 5;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -1636,27 +1676,27 @@ void opts___OptionContext___add_option(val_t p0, val_t p1){
   fra.me.REG[4] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ./../lib/opts.nit:249 */
+  /* ../lib/opts.nit:249 */
   fra.me.REG[2] = fra.me.REG[0];
   REGB0 = TAG_Bool(VAL_ISA(fra.me.REG[1], COLOR_standard___collection___array___Array, ID_standard___collection___array___Array)) /*cast Array[Option]*/;
   if (UNTAG_Bool(REGB0)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_opts, 249);
   }
-  /* ./../lib/standard//collection//array.nit:269 */
+  /* ../lib/standard/collection/array.nit:269 */
   REGB0 = TAG_Int(0);
-  /* ./../lib/standard//collection//array.nit:270 */
+  /* ../lib/standard/collection/array.nit:270 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
   }
   REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-  /* ./../lib/standard//collection//array.nit:271 */
+  /* ../lib/standard/collection/array.nit:271 */
   fra.me.REG[0] = ATTR_standard___collection___array___Array____items(fra.me.REG[1]);
-  /* ./../lib/standard//collection//array.nit:272 */
+  /* ../lib/standard/collection/array.nit:272 */
   while(1) {
-    /* ./../lib/standard//collection//array.nit:24 */
+    /* ../lib/standard/collection/array.nit:24 */
     REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
@@ -1668,18 +1708,18 @@ void opts___OptionContext___add_option(val_t p0, val_t p1){
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ./../lib/standard//kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:232 */
     REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-    /* ./../lib/standard//collection//array.nit:272 */
+    /* ../lib/standard/collection/array.nit:272 */
     if (UNTAG_Bool(REGB1)) {
-      /* ./../lib/standard//collection//array.nit:273 */
+      /* ../lib/standard/collection/array.nit:273 */
       REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
         nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
       }
-      /* ./../lib/standard//collection//array.nit:718 */
+      /* ../lib/standard/collection/array.nit:718 */
       fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[0])->val[UNTAG_Int(REGB0)];
-      /* ./../lib/opts.nit:252 */
+      /* ../lib/opts.nit:252 */
       REGB1 = TAG_Bool(ATTR_opts___OptionContext____options(fra.me.REG[2])!=NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
       } else {
@@ -1687,14 +1727,14 @@ void opts___OptionContext___add_option(val_t p0, val_t p1){
       }
       fra.me.REG[4] = ATTR_opts___OptionContext____options(fra.me.REG[2]);
       CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[4])(fra.me.REG[4], fra.me.REG[3]);
-      /* ./../lib/standard//collection//array.nit:274 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB1 = TAG_Int(1);
-      /* ./../lib/standard//kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:235 */
       REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-      /* ./../lib/standard//collection//array.nit:274 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB0 = REGB1;
     } else {
-      /* ./../lib/standard//collection//array.nit:272 */
+      /* ../lib/standard/collection/array.nit:272 */
       goto label1;
     }
   }
@@ -1713,16 +1753,17 @@ void opts___OptionContext___init(val_t p0, int* init_table){
   fra.me.meth = LOCATE_opts___OptionContext___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./../lib/opts.nit:258 */
+  /* ../lib/opts.nit:258 */
   fra.me.REG[1] = NEW_Array_standard___collection___array___Array___init();
   ATTR_opts___OptionContext____options(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./../lib/opts.nit:259 */
+  /* ../lib/opts.nit:259 */
   fra.me.REG[1] = NEW_HashMap_standard___collection___hash_collection___HashMap___init();
   ATTR_opts___OptionContext____optmap(fra.me.REG[0]) = fra.me.REG[1];
-  /* ./../lib/opts.nit:260 */
+  /* ../lib/opts.nit:260 */
   fra.me.REG[1] = NEW_Array_standard___collection___array___Array___init();
   ATTR_opts___OptionContext____rest(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
@@ -1742,6 +1783,7 @@ void opts___OptionContext___build(val_t p0){
   fra.me.meth = LOCATE_opts___OptionContext___build;
   fra.me.has_broke = 0;
   fra.me.REG_size = 8;
+  fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
@@ -1751,27 +1793,27 @@ void opts___OptionContext___build(val_t p0){
   fra.me.REG[6] = NIT_NULL;
   fra.me.REG[7] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ./../lib/opts.nit:265 */
+  /* ../lib/opts.nit:265 */
   REGB0 = TAG_Bool(ATTR_opts___OptionContext____options(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
     nit_abort("Uninitialized attribute %s", "_options", LOCATE_opts, 265);
   }
   fra.me.REG[1] = ATTR_opts___OptionContext____options(fra.me.REG[0]);
-  /* ./../lib/standard//collection//array.nit:269 */
+  /* ../lib/standard/collection/array.nit:269 */
   REGB0 = TAG_Int(0);
-  /* ./../lib/standard//collection//array.nit:270 */
+  /* ../lib/standard/collection/array.nit:270 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
     nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
   }
   REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-  /* ./../lib/standard//collection//array.nit:271 */
+  /* ../lib/standard/collection/array.nit:271 */
   fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[1]);
-  /* ./../lib/standard//collection//array.nit:272 */
+  /* ../lib/standard/collection/array.nit:272 */
   while(1) {
-    /* ./../lib/standard//collection//array.nit:24 */
+    /* ../lib/standard/collection/array.nit:24 */
     REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
@@ -1783,33 +1825,33 @@ void opts___OptionContext___build(val_t p0){
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ./../lib/standard//kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:232 */
     REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-    /* ./../lib/standard//collection//array.nit:272 */
+    /* ../lib/standard/collection/array.nit:272 */
     if (UNTAG_Bool(REGB1)) {
-      /* ./../lib/standard//collection//array.nit:273 */
+      /* ../lib/standard/collection/array.nit:273 */
       REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
         nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
       }
-      /* ./../lib/standard//collection//array.nit:718 */
+      /* ../lib/standard/collection/array.nit:718 */
       fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB0)];
-      /* ./../lib/opts.nit:266 */
+      /* ../lib/opts.nit:266 */
       fra.me.REG[4] = CALL_opts___Option___names(fra.me.REG[3])(fra.me.REG[3]);
-      /* ./../lib/standard//collection//array.nit:269 */
+      /* ../lib/standard/collection/array.nit:269 */
       REGB1 = TAG_Int(0);
-      /* ./../lib/standard//collection//array.nit:270 */
+      /* ../lib/standard/collection/array.nit:270 */
       REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4])!=NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
       } else {
         nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
       }
       REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4]);
-      /* ./../lib/standard//collection//array.nit:271 */
+      /* ../lib/standard/collection/array.nit:271 */
       fra.me.REG[5] = ATTR_standard___collection___array___Array____items(fra.me.REG[4]);
-      /* ./../lib/standard//collection//array.nit:272 */
+      /* ../lib/standard/collection/array.nit:272 */
       while(1) {
-        /* ./../lib/standard//collection//array.nit:24 */
+        /* ../lib/standard/collection/array.nit:24 */
         REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[4])!=NIT_NULL);
         if (UNTAG_Bool(REGB2)) {
         } else {
@@ -1821,18 +1863,18 @@ void opts___OptionContext___build(val_t p0){
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ./../lib/standard//kernel.nit:232 */
+        /* ../lib/standard/kernel.nit:232 */
         REGB2 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB2));
-        /* ./../lib/standard//collection//array.nit:272 */
+        /* ../lib/standard/collection/array.nit:272 */
         if (UNTAG_Bool(REGB2)) {
-          /* ./../lib/standard//collection//array.nit:273 */
+          /* ../lib/standard/collection/array.nit:273 */
           REGB2 = TAG_Bool(fra.me.REG[5]==NIT_NULL);
           if (UNTAG_Bool(REGB2)) {
             nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
           }
-          /* ./../lib/standard//collection//array.nit:718 */
+          /* ../lib/standard/collection/array.nit:718 */
           fra.me.REG[6] = ((Nit_NativeArray)fra.me.REG[5])->val[UNTAG_Int(REGB1)];
-          /* ./../lib/opts.nit:267 */
+          /* ../lib/opts.nit:267 */
           REGB2 = TAG_Bool(ATTR_opts___OptionContext____optmap(fra.me.REG[0])!=NIT_NULL);
           if (UNTAG_Bool(REGB2)) {
           } else {
@@ -1840,26 +1882,26 @@ void opts___OptionContext___build(val_t p0){
           }
           fra.me.REG[7] = ATTR_opts___OptionContext____optmap(fra.me.REG[0]);
           CALL_standard___collection___abstract_collection___Map_____braeq(fra.me.REG[7])(fra.me.REG[7], fra.me.REG[6], fra.me.REG[3]);
-          /* ./../lib/standard//collection//array.nit:274 */
+          /* ../lib/standard/collection/array.nit:274 */
           REGB2 = TAG_Int(1);
-          /* ./../lib/standard//kernel.nit:235 */
+          /* ../lib/standard/kernel.nit:235 */
           REGB2 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB2));
-          /* ./../lib/standard//collection//array.nit:274 */
+          /* ../lib/standard/collection/array.nit:274 */
           REGB1 = REGB2;
         } else {
-          /* ./../lib/standard//collection//array.nit:272 */
+          /* ../lib/standard/collection/array.nit:272 */
           goto label1;
         }
       }
       label1: while(0);
-      /* ./../lib/standard//collection//array.nit:274 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB1 = TAG_Int(1);
-      /* ./../lib/standard//kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:235 */
       REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-      /* ./../lib/standard//collection//array.nit:274 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB0 = REGB1;
     } else {
-      /* ./../lib/standard//collection//array.nit:272 */
+      /* ../lib/standard/collection/array.nit:272 */
       goto label2;
     }
   }