### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: formatter/org/eclipse/jdt/internal/formatter/comment/Java2HTMLEntityReader.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/formatter/org/eclipse/jdt/internal/formatter/comment/Java2HTMLEntityReader.java,v
retrieving revision 1.3
diff -u -r1.3 Java2HTMLEntityReader.java
--- formatter/org/eclipse/jdt/internal/formatter/comment/Java2HTMLEntityReader.java	10 May 2006 18:03:41 -0000	1.3
+++ formatter/org/eclipse/jdt/internal/formatter/comment/Java2HTMLEntityReader.java	27 Jul 2007 18:27:58 -0000
@@ -14,6 +14,8 @@
 import java.util.HashMap;
 import java.util.Map;
 
+import org.eclipse.jdt.internal.compiler.parser.*;
+
 /**
  * <code>SubstitutionTextReader</code> that will substitute html entities for
  * html symbols encountered in the original text. Line breaks and whitespaces
@@ -25,6 +27,12 @@
 
 	/** The hardcoded entity map. */
 	private static final Map fgEntityLookup;
+
+	/**
+	 * True if we have not yet seen a non-whitespace character on the current
+	 * line.
+	 */
+	private boolean beginLine = true;
 	
 	static {
 		fgEntityLookup= new HashMap(7);
@@ -50,6 +58,17 @@
 	 * @see org.eclipse.jdt.internal.ui.text.SubstitutionTextReader#computeSubstitution(int)
 	 */
 	protected String computeSubstitution(int c) {
+		/*
+		 * When @ is first on a line, translate it to &#064; so it isn't
+		 * misinterpreted as a Javadoc tag.
+		 * See https://bugs.eclipse.org/bugs/show_bug.cgi?id=197169
+		 */
+		if (c == '@')
+			return beginLine ? "&#064;" : null; //$NON-NLS-1$
+		else if (c == '\n' || c == '\r')
+			beginLine = true;
+		else if (!ScannerHelper.isWhitespace((char) c))
+			beginLine = false;
 		String lookup= (String) fgEntityLookup.get(String.valueOf((char) c));
 		return lookup;
 	}