The answer to this question is close to the ons given here: jQuery autocomplete tagging plug-in like StackOverflow's input tags?
However mine has a twist.
I'de like to allow entering "non tags" string.
I want to create a text field that allows the user to type formulas, based on available variables (our tags). User should there be able to type something like "[Variable 1] x [Variable 2] / [Variable 2]".
What is in "[]" is a tag and should displayed differently that the rest of the strings. Also, the actual value of the textbox would be slightly different. Something like "{{1}} * {{2}} / {{3}}".
I'm not asking how to do that (though also this sort of answer can be accepted), but if there is anything similar already available as a jQuery plugin.
I've tried to google and look here on SO, but I always end up on mostly the same kind of tagging plugin: maybe I'm using the wrong search string :)
