Always save all headers. Not doing so is kind of a crazy space microoptimization and can get a little messy

src/com/fsck/k9/Account.java

@@ -152,7 +152,6 @@ public class Account implements BaseAccount {
     private FolderMode mFolderPushMode;
     private FolderMode mFolderTargetMode;
     private int mAccountNumber;
-    private boolean mSaveAllHeaders;
     private boolean mPushPollOnConnect;
     private boolean mNotifySync;
     private SortType mSortType;
@@ -240,7 +239,6 @@ public class Account implements BaseAccount {
         mLocalStorageProviderId = StorageManager.getInstance(K9.app).getDefaultProviderId();
         mAutomaticCheckIntervalMinutes = -1;
         mIdleRefreshMinutes = 24;
-        mSaveAllHeaders = true;
         mPushPollOnConnect = true;
         mDisplayCount = K9.DEFAULT_VISIBLE_LIMIT;
         mAccountNumber = -1;
@@ -320,7 +318,6 @@ public class Account implements BaseAccount {
         mAlwaysBcc = prefs.getString(mUuid + ".alwaysBcc", mAlwaysBcc);
         mAutomaticCheckIntervalMinutes = prefs.getInt(mUuid + ".automaticCheckIntervalMinutes", -1);
         mIdleRefreshMinutes = prefs.getInt(mUuid + ".idleRefreshMinutes", 24);
-        mSaveAllHeaders = prefs.getBoolean(mUuid + ".saveAllHeaders", true);
         mPushPollOnConnect = prefs.getBoolean(mUuid + ".pushPollOnConnect", true);
         mDisplayCount = prefs.getInt(mUuid + ".displayCount", K9.DEFAULT_VISIBLE_LIMIT);
         if (mDisplayCount < 0) {
@@ -478,7 +475,6 @@ public class Account implements BaseAccount {
         editor.remove(mUuid + ".alwaysBcc");
         editor.remove(mUuid + ".automaticCheckIntervalMinutes");
         editor.remove(mUuid + ".pushPollOnConnect");
-        editor.remove(mUuid + ".saveAllHeaders");
         editor.remove(mUuid + ".idleRefreshMinutes");
         editor.remove(mUuid + ".lastAutomaticCheckTime");
         editor.remove(mUuid + ".latestOldMessageSeenTime");
@@ -638,7 +634,6 @@ public class Account implements BaseAccount {
         editor.putString(mUuid + ".alwaysBcc", mAlwaysBcc);
         editor.putInt(mUuid + ".automaticCheckIntervalMinutes", mAutomaticCheckIntervalMinutes);
         editor.putInt(mUuid + ".idleRefreshMinutes", mIdleRefreshMinutes);
-        editor.putBoolean(mUuid + ".saveAllHeaders", mSaveAllHeaders);
         editor.putBoolean(mUuid + ".pushPollOnConnect", mPushPollOnConnect);
         editor.putInt(mUuid + ".displayCount", mDisplayCount);
         editor.putLong(mUuid + ".lastAutomaticCheckTime", mLastAutomaticCheckTime);
@@ -1397,14 +1392,6 @@ public class Account implements BaseAccount {
         mPushPollOnConnect = pushPollOnConnect;
     }
 
-    public synchronized boolean saveAllHeaders() {
-        return mSaveAllHeaders;
-    }
-
-    public synchronized void setSaveAllHeaders(boolean saveAllHeaders) {
-        mSaveAllHeaders = saveAllHeaders;
-    }
-
     /**
      * Are we storing out localStore on the SD-card instead of the local device
      * memory?<br/>

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

@@ -156,7 +156,6 @@ public class AccountSettings extends K9PreferenceActivity {
     private CheckBoxPreference mReplyAfterQuote;
     private CheckBoxPreference mStripSignature;
     private CheckBoxPreference mSyncRemoteDeletions;
-    private CheckBoxPreference mSaveAllHeaders;
     private CheckBoxPreference mPushPollOnConnect;
     private ListPreference mIdleRefreshPeriod;
     private ListPreference mMaxPushFolders;
@@ -366,9 +365,6 @@ public class AccountSettings extends K9PreferenceActivity {
         mSyncRemoteDeletions = (CheckBoxPreference) findPreference(PREFERENCE_SYNC_REMOTE_DELETIONS);
         mSyncRemoteDeletions.setChecked(mAccount.syncRemoteDeletions());
 
-        mSaveAllHeaders = (CheckBoxPreference) findPreference(PREFERENCE_SAVE_ALL_HEADERS);
-        mSaveAllHeaders.setChecked(mAccount.saveAllHeaders());
-
         mSearchableFolders = (ListPreference) findPreference(PREFERENCE_SEARCHABLE_FOLDERS);
         mSearchableFolders.setValue(mAccount.getSearchableFolders().name());
         mSearchableFolders.setSummary(mSearchableFolders.getEntry());
@@ -720,7 +716,6 @@ public class AccountSettings extends K9PreferenceActivity {
             mAccount.setExpungePolicy(mExpungePolicy.getValue());
         }
         mAccount.setSyncRemoteDeletions(mSyncRemoteDeletions.isChecked());
-        mAccount.setSaveAllHeaders(mSaveAllHeaders.isChecked());
         mAccount.setSearchableFolders(Account.Searchable.valueOf(mSearchableFolders.getValue()));
         mAccount.setMessageFormat(Account.MessageFormat.valueOf(mMessageFormat.getValue()));
         mAccount.setAlwaysShowCcBcc(mAlwaysShowCcBcc.isChecked());

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

@@ -81,21 +81,6 @@ public class LocalStore extends Store implements Serializable {
 
     private static final Flag[] PERMANENT_FLAGS = { Flag.DELETED, Flag.X_DESTROYED, Flag.SEEN, Flag.FLAGGED };
 
-    private static final Set<String> HEADERS_TO_SAVE;
-    static {
-        Set<String> set = new HashSet<String>();
-        set.add(K9.IDENTITY_HEADER);
-        set.add("To");
-        set.add("Cc");
-        set.add("From");
-        set.add("In-Reply-To");
-        set.add("References");
-        set.add(MimeHeader.HEADER_CONTENT_ID);
-        set.add(MimeHeader.HEADER_CONTENT_DISPOSITION);
-        set.add("User-Agent");
-        HEADERS_TO_SAVE = Collections.unmodifiableSet(set);
-    }
-
     /*
      * a String containing the columns getMessages expects to work with
      * in the correct order.
@@ -2314,12 +2299,9 @@ public class LocalStore extends Store implements Serializable {
             database.execute(true, new DbCallback<Void>() {
                 @Override
                 public Void doDbWork(final SQLiteDatabase db) throws WrappedException, UnavailableStorageException {
-                    boolean saveAllHeaders = mAccount.saveAllHeaders();
-                    boolean gotAdditionalHeaders = false;
 
                     deleteHeaders(id);
                     for (String name : message.getHeaderNames()) {
-                        if (saveAllHeaders || HEADERS_TO_SAVE.contains(name)) {
                             String[] values = message.getHeader(name);
                             for (String value : values) {
                                 ContentValues cv = new ContentValues();
@@ -2328,12 +2310,8 @@ public class LocalStore extends Store implements Serializable {
                                 cv.put("value", value);
                                 db.insert("headers", "name", cv);
                             }
-                        } else {
-                            gotAdditionalHeaders = true;
-                        }
                     }
 
-                    if (!gotAdditionalHeaders) {
                     // Remember that all headers for this message have been saved, so it is
                     // not necessary to download them again in case the user wants to see all headers.
                     List<Flag> appendedFlags = new ArrayList<Flag>();
@@ -2343,7 +2321,6 @@ public class LocalStore extends Store implements Serializable {
                     db.execSQL("UPDATE messages " + "SET flags = ? " + " WHERE id = ?",
                                new Object[]
                                { Utility.combine(appendedFlags.toArray(), ',').toUpperCase(Locale.US), id });
-                    }
                     return null;
                 }
             });

src/com/fsck/k9/preferences/AccountSettings.java

@@ -162,9 +162,6 @@ public class AccountSettings {
         s.put("ringtone", Settings.versions(
                 new V(1, new RingtoneSetting("content://settings/system/notification_sound"))
             ));
-        s.put("saveAllHeaders", Settings.versions(
-                new V(1, new BooleanSetting(true))
-            ));
         s.put("searchableFolders", Settings.versions(
                 new V(1, new EnumSetting(Account.Searchable.class, Account.Searchable.ALL))
             ));