From the screenshot, someone not familiar with strftime would be lost; but most people would be able to figure out the invented format. Also, it looked like users got to choose from a drop down of suggestions -- the "format string" was probably only for users to read, not actually parsed.
Also, it looked like users got to choose from a drop down of suggestions -- the "format string" was probably only for users to read, not actually parsed.
Actually it is possible to write your own format string, since those are comboboxes:
Also, I would agree that the Windows UI is better since it provides a short description of the format letters; but they could've just as easily done that for the commonly-used strftime() specifiers too, with perhaps a link that opens a popup with all of them. The live preview at the top also helps.
