ifNull and isNull analyze differently

ifNull and isNull analyze differently

There is a problem where isNull analyzes "" as true, and ifNull analyzes "" as false. Very frustrating considering that there is no support calling your own custom functions. I would right my own corrected version of this function except you have to go through some convoluted restAPI process to call functions from other functions.

Calling custom functions within custom functions should be basic functionality. This is foundational to any coding language ever.

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