Merge pull request doxygen#11388 from albert-github/feature/issue_11387

issue doxygen#11387 commit 152ad34 can break verbatim

Author: doxygen

src/mandocvisitor.cpp

@@ -216,18 +216,18 @@ void ManDocVisitor::operator()(const DocVerbatim &s)
       m_firstCol=TRUE;
       break;
     case DocVerbatim::JavaDocLiteral:
-      filter(s.text());
+      filter(s.text(),true);
       break;
     case DocVerbatim::JavaDocCode:
       m_t << "\\fR\n";
-      filter(s.text());
+      filter(s.text(),true);
       m_t << "\\fP\n";
       break;
     case DocVerbatim::Verbatim:
       if (!m_firstCol) m_t << "\n";
       m_t << ".PP\n";
       m_t << ".nf\n";
-      filter(s.text());
+      filter(s.text(),true);
       if (!m_firstCol) m_t << "\n";
       m_t << ".fi\n";
       m_t << ".PP\n";
@@ -984,7 +984,7 @@ void ManDocVisitor::operator()(const DocParBlock &pb)
   visitChildren(pb);
 }
 
-void ManDocVisitor::filter(const QCString &str)
+void ManDocVisitor::filter(const QCString &str, const bool retainNewline)
 {
   if (!str.isEmpty())
   {
@@ -998,7 +998,7 @@ void ManDocVisitor::filter(const QCString &str)
         case '.':  m_t << "\\&."; break; // see  bug652277
         case '\\': m_t << "\\\\"; break;
         case '\"': m_t << "\""; insideDoubleQuote = !insideDoubleQuote; break;
-        case '\n': if (!insideDoubleQuote) m_t << c; break;
+        case '\n': if (retainNewline || !insideDoubleQuote) m_t << c; break;
         default: m_t << c; break;
       }
     }

src/mandocvisitor.h

@@ -117,7 +117,7 @@ class ManDocVisitor : public DocVisitor
     // helper functions
     //--------------------------------------
 
-    void filter(const QCString &str);
+    void filter(const QCString &str, const bool retainNewline = false);
 
     //--------------------------------------
     // state variables