From 8659653dc81827b249277d531f781bc926540743 Mon Sep 17 00:00:00 2001
From: John Bauer <horatio@gmail.com>
Date: Mon, 17 Jul 2023 00:10:38 -0700
Subject: [PATCH] ... also fix the optional output for disjunctions

---
 src/edu/stanford/nlp/trees/tregex/CoordinationPattern.java | 5 ++++-
 test/src/edu/stanford/nlp/trees/tregex/TregexTest.java     | 3 +++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/edu/stanford/nlp/trees/tregex/CoordinationPattern.java b/src/edu/stanford/nlp/trees/tregex/CoordinationPattern.java
index c4fc407750..4841a63dcd 100644
--- a/src/edu/stanford/nlp/trees/tregex/CoordinationPattern.java
+++ b/src/edu/stanford/nlp/trees/tregex/CoordinationPattern.java
@@ -58,12 +58,15 @@ public String toString() {
       if (isNegated()) {
         sb.append("!");
       }
+      if (isOptional()) {
+        sb.append("?");
+      }
       sb.append('[');
       for (Iterator<TregexPattern> iter = children.iterator(); iter.hasNext();) {
         TregexPattern node = iter.next();
         sb.append(node.toString());
         if (iter.hasNext()) {
-          sb.append(" |");
+          sb.append(" | ");
         }
       }
       sb.append(']');
diff --git a/test/src/edu/stanford/nlp/trees/tregex/TregexTest.java b/test/src/edu/stanford/nlp/trees/tregex/TregexTest.java
index 153a37a8bb..6909906256 100644
--- a/test/src/edu/stanford/nlp/trees/tregex/TregexTest.java
+++ b/test/src/edu/stanford/nlp/trees/tregex/TregexTest.java
@@ -1566,6 +1566,9 @@ public void testOptionalToString() {
 
     pattern = TregexPattern.compile("A ?< B");
     assertEquals("Root (A ?< B )", pattern.toString());
+
+    pattern = TregexPattern.compile("A ?[< B | < C]");
+    assertEquals("Root (A ?[< B  | < C ])", pattern.toString());
   }
 
   /**