Add no double line breaks checkstyle rule (#259)

palantir · Mar 29, 2018 · 17b906f · 17b906f
1 parent d5cddee
commit 17b906f
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diff --git a/docs/java-style-guide/readme.md b/docs/java-style-guide/readme.md
@@ -548,8 +548,7 @@ A single blank line appears:
 - As required by other sections of this document (such as
   Section Import statements).
 
-Two consecutive blank lines are permitted, but never required (or
-encouraged). More than two consecutive blank lines are discouraged.
+Two consecutive blank lines are not permitted.
 
 #### Horizontal whitespace
 

diff --git a/gradle-baseline-java-config/resources/checkstyle/checkstyle.xml b/gradle-baseline-java-config/resources/checkstyle/checkstyle.xml
@@ -39,6 +39,11 @@
         <property name="format" value="\s+$"/>
         <property name="message" value="Whitespace at end-of-line"/>
     </module>
+    <module name="RegexpMultiline"> <!-- Java Style Guide: Vertical Whitespace -->
+	<property name="fileExtensions" value="java"/>
+        <property name="format" value="^\n\n$"/>
+        <property name="message" value="Two consecutive blank lines are not permitted."/>
+    </module>
     <module name="SuppressionFilter"> <!-- baseline-gradle: README.md -->
         <property name="file" value="${config_loc}/checkstyle-suppressions.xml"/>
     </module>