Fix issue 146: empty tags should not force explicit document start
diff --git a/src/changes/changes.xml b/src/changes/changes.xml
index 92a40fa..0726de9 100644
--- a/src/changes/changes.xml
+++ b/src/changes/changes.xml
@@ -7,6 +7,9 @@
</properties>
<body>
<release version="1.11" date="in Mercurial" description="Maintenance">
+ <action dev="py4fun" type="fix" issue="146">
+ Fix issue 146: empty tags should not force explicit document start (2012-09-29)
+ </action>
<action dev="py4fun" type="fix" issue="156">
Fix issue 156: setSkipMissingProperties fails for non-scalar values (2012-09-05)
</action>
diff --git a/src/main/java/org/yaml/snakeyaml/emitter/Emitter.java b/src/main/java/org/yaml/snakeyaml/emitter/Emitter.java
index bda17a0..23198cf 100644
--- a/src/main/java/org/yaml/snakeyaml/emitter/Emitter.java
+++ b/src/main/java/org/yaml/snakeyaml/emitter/Emitter.java
@@ -328,7 +328,9 @@
}
}
boolean implicit = first && !ev.getExplicit() && !canonical
- && ev.getVersion() == null && ev.getTags() == null && !checkEmptyDocument();
+ && ev.getVersion() == null
+ && (ev.getTags() == null || ev.getTags().isEmpty())
+ && !checkEmptyDocument();
if (!implicit) {
writeIndent();
writeIndicator("---", true, false, false);
