Its actually very simple but if your not comfortable with the steps then I would strongly suggest you don't try it but considering people in this situation are on the beta I assume you at least have a vague understanding of all the processes involved.
1. Turn off icloud documents for whatsapp (Settings> icloud>Documents & Data) and also turn off any funky accessibility settings you might have like zoom or bold as they also cause issues with whatsapp. Turn off wifi and turn on airplane mode(prevents you get new messages during the process) Quit whatsapp and close it fully(double tap home button and swipe it away).
2. Download and install
iExplorer (free trial)
3. If you don't have anything that can connect to sqllite databases I'd suggest you go with
Navicat for SQLite (free trial). Download and install.
4. Plug in your iphone and open up iExplorer. Click "Apps> WhatsApp> Documents" right click "ChatStorage.sqlite" and export to folder.
5. Go to the location you exported the file to and make a copy of it for a backup. Open the sqlite file in navicat. Click on the connection in the left hand panel and rightclick on the database think its called "main" and select "New Query".
6. A new window should appear, click on the "Query Editor" tab and paste in.
Code:
-- Cleans up existing messages --
update ZWAMESSAGE
set ZTEXT = replace( ZTEXT, 'ff', 'f f')
where ZWAMESSAGE.ZTEXT like '%ff%';
update ZWAMESSAGE
set ZTEXT = replace( ZTEXT, 'fi', 'f i')
where ZWAMESSAGE.ZTEXT like '%fi%';
update ZWAMESSAGE
set ZTEXT = replace( ZTEXT, 'fl', 'f l')
where ZWAMESSAGE.ZTEXT like '%fl%';
-- Sets up trigger's to re-clean message text when ever new messages are created --
CREATE TRIGGER insert_Ff AFTER INSERT ON ZWAMESSAGE
BEGIN
UPDATE ZWAMESSAGE
SET ZTEXT = replace( ZTEXT, 'ff', 'f f')
WHERE ZWAMESSAGE.ZTEXT like '%ff%';
END;
CREATE TRIGGER insert_Fi AFTER INSERT ON ZWAMESSAGE
BEGIN
UPDATE ZWAMESSAGE
SET ZTEXT = replace( ZTEXT, 'fi', 'f i')
WHERE ZWAMESSAGE.ZTEXT like '%fi%';
END;
CREATE TRIGGER insert_Fl AFTER INSERT ON ZWAMESSAGE
BEGIN
UPDATE ZWAMESSAGE
SET ZTEXT = replace( ZTEXT, 'fl', 'f l')
WHERE ZWAMESSAGE.ZTEXT like '%fl%';
END;
7. Click the Run button and the query will execute. Exit Navicat and copy the sqllitefile back into the Whatsapp directory on your iphone. Whatsapp will still crash when ever you receive a message with these combination but when you reopen it, it should work fine.
Seeing as the issue will probably be fixed by the time iOS8 goes public it is probably best to remove these triggers once its stable. Just repeat the previous steps but run these queries instead.
Code:
DROP TRIGGER insert_Ff;
DROP TRIGGER insert_Fi;
DROP TRIGGER insert_Fl;
