From 08ec881379a83925080a687fde2682264785e8e4 Mon Sep 17 00:00:00 2001
From: maxonfjvipon <mtrunnikov@gmail.com>
Date: Tue, 11 Jul 2023 14:36:12 +0300
Subject: [PATCH] #2231 - try to fix syntax

---
 .../main/antlr4/org/eolang/parser/Program.g4  | 26 ++++++++++++-------
 .../java/org/eolang/parser/XeListener.java    | 10 +++++++
 2 files changed, 26 insertions(+), 10 deletions(-)

diff --git a/eo-parser/src/main/antlr4/org/eolang/parser/Program.g4 b/eo-parser/src/main/antlr4/org/eolang/parser/Program.g4
index 4216b441fd..a512d99c19 100644
--- a/eo-parser/src/main/antlr4/org/eolang/parser/Program.g4
+++ b/eo-parser/src/main/antlr4/org/eolang/parser/Program.g4
@@ -27,18 +27,23 @@ objects
   (
     (COMMENT SINGLE_EOL)*
     object
-    (SINGLE_EOL | DOUBLE_EOL)
   )+
   ;
 
 object
   :
-  (
-    abstraction
-    |
-    application
-  )
-  tail?
+  abstraction
+  otail?
+  SINGLE_EOL?
+  |
+  application
+  otail?
+  (SINGLE_EOL | DOUBLE_EOL)
+  ;
+
+otail
+  :
+  tail
   (
     SINGLE_EOL
     method
@@ -53,9 +58,10 @@ abstraction
   (COMMENT SINGLE_EOL)*
   attributes
   (
-    (suffix (SPACE SLASH (NAME | QUESTION))?)
-    | htail
+    suffix
+    (SPACE SLASH (NAME | QUESTION))?
   )?
+  SINGLE_EOL
   ;
 
 attributes
@@ -91,7 +97,7 @@ tail
   :
   SINGLE_EOL
   TAB
-  (object (SINGLE_EOL | DOUBLE_EOL))+
+  object+
   UNTAB
   ;
 
diff --git a/eo-parser/src/main/java/org/eolang/parser/XeListener.java b/eo-parser/src/main/java/org/eolang/parser/XeListener.java
index 8d15d47a38..3f8a67bbf8 100644
--- a/eo-parser/src/main/java/org/eolang/parser/XeListener.java
+++ b/eo-parser/src/main/java/org/eolang/parser/XeListener.java
@@ -197,6 +197,16 @@ public void exitObject(final ProgramParser.ObjectContext ctx) {
         // This method is created by ANTLR and can't be removed
     }
 
+    @Override
+    public void enterOtail(ProgramParser.OtailContext ctx) {
+        // Nothing here
+    }
+
+    @Override
+    public void exitOtail(ProgramParser.OtailContext ctx) {
+        // Nothing here
+    }
+
     @Override
     public void enterAbstraction(final ProgramParser.AbstractionContext ctx) {
         this.objects.start(