fix character encoding for body in composer window on cmdline usage

assemble message before it is passed to the composer window,
which makes sure that also the ContentType header is used
which contains the charset.
BUG: 259039
FIXED-IN: 4.10.1
REVIEW: 108884

kmkernel.cpp

@@ -629,7 +629,7 @@ int KMKernel::openComposer( const QString &to, const QString &cc,
   }
   else if ( !body.isEmpty() ) {
     context = KMail::Composer::NoTemplate;
-    msg->setBody( body.toLatin1() );
+    msg->setBody( body.toUtf8() );
   }
   else {
     TemplateParser::TemplateParser parser( msg, TemplateParser::TemplateParser::NewMessage );
@@ -656,6 +656,7 @@ int KMKernel::openComposer( const QString &to, const QString &cc,
       }
   }
 
+  msg->assemble();
   KMail::Composer * cWin = KMail::makeComposer( msg, false, false, context );
   if (!to.isEmpty())
     cWin->setFocusToSubject();
@@ -754,6 +755,7 @@ int KMKernel::openComposer (const QString &to, const QString &cc,
     }
   }
 
+  msg->assemble();
   KMail::Composer * cWin = KMail::makeComposer( KMime::Message::Ptr(), false, false,context );
   cWin->setMessage( msg, false, false, !isICalInvitation /* mayAutoSign */ );
   cWin->setSigningAndEncryptionDisabled( isICalInvitation
@@ -799,13 +801,14 @@ QDBusObjectPath KMKernel::openComposer( const QString &to, const QString &cc,
   if ( !subject.isEmpty() ) msg->subject()->fromUnicodeString( subject, "utf-8" );
   if ( !to.isEmpty() )      msg->to()->fromUnicodeString( to, "utf-8" );
   if ( !body.isEmpty() ) {
-    msg->setBody(body.toLatin1());
+    msg->setBody( body.toUtf8() );
   } else {
     TemplateParser::TemplateParser parser( msg, TemplateParser::TemplateParser::NewMessage );
     parser.setIdentityManager( KMKernel::self()->identityManager() );
     parser.process( KMime::Message::Ptr() );
   }
 
+  msg->assemble();
   const KMail::Composer::TemplateContext context = body.isEmpty() ? KMail::Composer::New :
                                                    KMail::Composer::NoTemplate;
   KMail::Composer * cWin = KMail::makeComposer( msg, false, false, context );
@@ -851,6 +854,7 @@ QDBusObjectPath KMKernel::newMessage( const QString &to,
   if ( !bcc.isEmpty() )     msg->bcc()->fromUnicodeString( bcc, "utf-8" );
   if ( !to.isEmpty() )      msg->to()->fromUnicodeString( to, "utf-8" );
 
+  msg->assemble();
   TemplateParser::TemplateParser parser( msg, TemplateParser::TemplateParser::NewMessage );
   parser.setIdentityManager( identityManager() );
   Akonadi::Collection col = folder ? folder->collection() : Akonadi::Collection();