Fix #373: escape positive numbers too if number quoting requested (#381)

Author: cowtowncoder

release-notes/VERSION-2.x

@@ -16,7 +16,9 @@ Active Maintainers:
 
 2.15.0 (not yet released)
 
--
+#373: Positive numbers with plus sign not quoted correctly with
+  `ALWAYS_QUOTE_NUMBERS_AS_STRINGS`
+ (requested by @dyadyaJora)
 
 2.14.2 (28-Jan-2023)
 

yaml/src/main/java/com/fasterxml/jackson/dataformat/yaml/YAMLGenerator.java

@@ -217,7 +217,7 @@ private Feature(boolean defaultState) {
 
     protected final static long MIN_INT_AS_LONG = (long) Integer.MIN_VALUE;
     protected final static long MAX_INT_AS_LONG = (long) Integer.MAX_VALUE;
-    protected final static Pattern PLAIN_NUMBER_P = Pattern.compile("-?[0-9]*(\\.[0-9]*)?");
+    protected final static Pattern PLAIN_NUMBER_P = Pattern.compile("[+-]?[0-9]*(\\.[0-9]*)?");
     protected final static String TAG_BINARY = Tag.BINARY.toString();
 
     /*

yaml/src/test/java/com/fasterxml/jackson/dataformat/yaml/ser/GeneratorWithMinimizeTest.java

@@ -177,6 +177,8 @@ public void testLiteralStringsMultiLine() throws Exception
 
     public void testQuoteNumberStoredAsString() throws Exception
     {
+        // [dataformats-text#182]
+
         YAMLFactory f = new YAMLFactory();
         // verify default settings
         assertFalse(f.isEnabled(YAMLGenerator.Feature.MINIMIZE_QUOTES));
@@ -206,6 +208,11 @@ public void testQuoteNumberStoredAsString() throws Exception
         yaml = mapper.writeValueAsString(Collections.singletonMap("key", "-60.25")).trim();
         assertEquals("---\n" +
                 "key: \"-60.25\"", yaml);
+
+        // [dataformats-text#373]
+        yaml = mapper.writeValueAsString(Collections.singletonMap("key", "+125")).trim();
+        assertEquals("---\n" +
+                "key: \"+125\"", yaml);
     }
 
     public void testNonQuoteNumberStoredAsString() throws Exception