Allow users to choose whether they want plaintext messages to be

fixed-width when uprezzed to HTML.

res/values/strings.xml

@@ -293,6 +293,8 @@ Welcome to K-9 Mail setup.  K-9 is an open source mail client for Android origin
     <string name="global_settings_touchable_label">Touch-friendly view</string>
     <string name="global_settings_touchable_summary">Roomier list items with message previews</string>
 
+    <string name="global_settings_messageview_fixedwidth_label">Fixed-width fonts</string>
+    <string name="global_settings_messageview_fixedwidth_summary">Use a fixed-width font when showing plain-text messages</string>
 
 	<string name="account_setup_basics_title">Set up a new account</string>
     <string name="account_setup_basics_instructions">Enter this account\'s email address:</string>
@@ -696,8 +698,9 @@ Welcome to K-9 Mail setup.  K-9 is an open source mail client for Android origin
     <string name="operational_preferences">Sync</string>
     <string name="accountlist_preferences">Account List</string>
     <string name="messagelist_preferences">Message Lists</string>
+    <string name="messageview_preferences">Messages</string>
     <string name="settings_theme_label">Theme</string>
-    
+
     <string name="background_ops_label">Background sync</string>
     <string name="background_ops_never">Never</string>
     <string name="background_ops_always">Always</string>

res/xml/global_preferences.xml

@@ -89,6 +89,15 @@
 
     </PreferenceCategory>
 
+    <PreferenceCategory android:title="@string/messageview_preferences" android:key="messageview_preferences">
+        <CheckBoxPreference
+            android:key="messageview_fixedwidth_font"
+            android:title="@string/global_settings_messageview_fixedwidth_label"
+            android:summary="@string/global_settings_messageview_fixedwidth_summary"
+
+            />
+    </PreferenceCategory>
+
     <PreferenceCategory android:title="@string/operational_preferences" android:key="operational_preferences">
 
         <ListPreference

src/com/fsck/k9/K9.java

@@ -78,6 +78,9 @@ public class K9 extends Application
     private static boolean mMessageListStars = true;
     private static boolean mMessageListCheckboxes = false;
     private static boolean mMessageListTouchable = false;
+
+    private static boolean mMessageViewFixedWidthFont = false;
+
     private static boolean mGesturesEnabled = true;
     private static boolean mManageBack = false;
     private static boolean mMeasureAccounts = true;
@@ -304,6 +307,9 @@ public class K9 extends Application
         editor.putBoolean("messageListStars",mMessageListStars);
         editor.putBoolean("messageListCheckboxes",mMessageListCheckboxes);
         editor.putBoolean("messageListTouchable",mMessageListTouchable);
+
+        editor.putBoolean("messageViewFixedWidthFont",mMessageViewFixedWidthFont);
+
         editor.putInt("theme", theme);
         editor.putBoolean("useGalleryBugWorkaround", useGalleryBugWorkaround);
 
@@ -330,6 +336,9 @@ public class K9 extends Application
         mMessageListStars = sprefs.getBoolean("messageListStars",true);
         mMessageListCheckboxes = sprefs.getBoolean("messageListCheckboxes",false);
         mMessageListTouchable = sprefs.getBoolean("messageListTouchable",false);
+
+        mMessageViewFixedWidthFont = sprefs.getBoolean("messageViewFixedWidthFont", false);
+
         useGalleryBugWorkaround = sprefs.getBoolean("useGalleryBugWorkaround", K9.isGalleryBuggy());
 
         fontSizes.load(sprefs);
@@ -505,6 +514,16 @@ public class K9 extends Application
     }
 
 
+    public static boolean messageViewFixedWidthFont()
+    {
+        return mMessageViewFixedWidthFont;
+    }
+
+    public static void setMessageViewFixedWidthFont(boolean fixed)
+    {
+        mMessageViewFixedWidthFont = fixed;
+    }
+
     private static Method getMethod(Class<?> classObject, String methodName)
     {
         try

src/com/fsck/k9/activity/setup/Prefs.java

@@ -33,6 +33,8 @@ public class Prefs extends K9PreferenceActivity
     private static final String PREFERENCE_MESSAGELIST_CHECKBOXES = "messagelist_checkboxes";
     private static final String PREFERENCE_MESSAGELIST_TOUCHABLE = "messagelist_touchable";
 
+    private static final String PREFERENCE_MESSAGEVIEW_FIXEDWIDTH = "messageview_fixedwidth_font";
+
     private static final String PREFERENCE_MEASURE_ACCOUNTS = "measure_accounts";
     private static final String PREFERENCE_COUNT_SEARCH = "count_search";
     private static final String PREFERENCE_GALLERY_BUG_WORKAROUND = "use_gallery_bug_workaround";
@@ -47,6 +49,9 @@ public class Prefs extends K9PreferenceActivity
     private CheckBoxPreference mStars;
     private CheckBoxPreference mCheckboxes;
     private CheckBoxPreference mTouchable;
+
+    private CheckBoxPreference mFixedWidth;
+
     private CheckBoxPreference mMeasureAccounts;
     private CheckBoxPreference mCountSearch;
     private CheckBoxPreference mUseGalleryBugWorkaround;
@@ -161,6 +166,10 @@ public class Prefs extends K9PreferenceActivity
         mTouchable = (CheckBoxPreference)findPreference(PREFERENCE_MESSAGELIST_TOUCHABLE);
         mTouchable.setChecked(K9.messageListTouchable());
 
+        mFixedWidth = (CheckBoxPreference)findPreference(PREFERENCE_MESSAGEVIEW_FIXEDWIDTH);
+        mFixedWidth.setChecked(K9.messageViewFixedWidthFont());
+
+
         mMeasureAccounts = (CheckBoxPreference)findPreference(PREFERENCE_MEASURE_ACCOUNTS);
         mMeasureAccounts.setChecked(K9.measureAccounts());
 
@@ -190,9 +199,10 @@ public class Prefs extends K9PreferenceActivity
         K9.setManageBack(mManageBack.isChecked());
         K9.setMessageListStars(mStars.isChecked());
         K9.setMessageListCheckboxes(mCheckboxes.isChecked());
-
         K9.setMessageListTouchable(mTouchable.isChecked());
 
+        K9.setMessageViewFixedWidthFont(mFixedWidth.isChecked());
+
         K9.setMeasureAccounts(mMeasureAccounts.isChecked());
         K9.setCountSearchMessages(mCountSearch.isChecked());
 

src/com/fsck/k9/mail/store/LocalStore.java

@@ -2333,9 +2333,11 @@ public class LocalStore extends Store implements Serializable
             text = text.replaceAll("(?m)^([^\r\n]{4,}[\\s\\w,:;+/])(?:\r\n|\n|\r)(?=[a-z]\\S{0,10}[\\s\\n\\r])","$1 ");
             text = text.replaceAll("(?m)(\r\n|\n|\r){4,}","\n\n");
 
+
             Matcher m = Regex.WEB_URL_PATTERN.matcher(text);
             StringBuffer sb = new StringBuffer(text.length() + 512);
-            sb.append("<html><body><pre style=\"white-space: pre-wrap; word-wrap:break-word; \">");
+            sb.append("<html><head></head><body>");
+            sb.append(htmlifyMessageHeader());
             while (m.find())
             {
                 int start = m.start();
@@ -2353,12 +2355,38 @@ public class LocalStore extends Store implements Serializable
 
 
             m.appendTail(sb);
-            sb.append("</pre></body></html>");
+            sb.append(htmlifyMessageFooter());
+            sb.append("</body></html>");
             text = sb.toString();
 
             return text;
         }
 
+        private String htmlifyMessageHeader()
+        {
+            if (K9.messageViewFixedWidthFont())
+            {
+                return "<pre style=\"white-space: pre-wrap; word-wrap:break-word; \">";
+            }
+            else
+            {
+                return "<div style=\"white-space: pre-wrap; word-wrap:break-word; \">";
+            }
+        }
+
+
+        private String htmlifyMessageFooter()
+        {
+            if (K9.messageViewFixedWidthFont())
+            {
+                return "</pre>";
+            }
+            else
+            {
+                return "</div>";
+            }
+        }
+
         @Override
         public boolean isInTopGroup()
         {