three project requirments for data searching sounds so:

1) ignore case sensitivity (= grid option ignoreCase)

2) use operator "containt" (= defaultSort:cn)

3) ignore diacritic ( => Á = A, ÄŒ = C, ... = I can't find any solution)

I think I must implement own function to compare cell value and search condition (e.g. function contain(key1, key2) return boolean) beacause grid works on local data (datatype: local) . This function will be applied on all rows. It's not problem. But I have no idea where to place whole algoritm. Use any grid event or place it outside component? Thanks for your invention.

P.S. jqGrid is really wonderfull component !!!