Auto-complete with CodeMirrror

Question

I am trying to implement auto-complete using CodeMirror show-hint addon, specifically with sql-hint. I want it auto-complete as I type.

What I am doing right now is,

codemirror_editor.on("change", function(instance) {
    CodeMirror.commands.autocomplete(instance);
});

But the problem is, it completes words before I even type a single letter for a word. For example after space, it gives a long list of all possible tokens. I want it to show up only if some characters are typed. Can someone please help with that?

Answer 1

This is how I solved this, after Marijn's answer.

codemirror_editor.on("inputRead", function(instance) {
    if (instance.state.completionActive) {
        return;
    }
    var cur = instance.getCursor();
    var token = instance.getTokenAt(cur);
    var string = '';
    if (token.string.match(/^[.`\w@]\w*$/)) {
        string = token.string;
    }
    if (string.length > 0) {
        CodeMirror.commands.autocomplete(instance);
    }
});

This may be specific to SQL.

I am answering my own question to share the actual solution for the question.