Backspace key handling bug on swanalekha-ml.js

[pshanoop]

After writing അവള് , If I clear all letters using backspace key then if I press 'a' it gives letter 'ള' instead of 'അ'. I think error is on pattern = pattern.replace(/aAeEiIoOuU0-9/g, ''); this isn't working.

I tried another code in my jQuery version of swanalekha

    pos = element.selectionStart; //line position changed
            if(kCode === 8){ //backspace
                // this.pattern = this.pattern.replace(/[aAeEiIoOuU0-9]/g,'');
                this.pattern = this.pattern.slice(0, -1);               
                this.patternStart = pos;
                this.tabCount =1;       
                return;
            }

I haven't tested this very well. As per my understading of your algorithm I think it will work. Please verfy so that I can make another pull request.