[chaley]

Originally Posted by ownedbycats

Question: When using a stored template that returns 'True' if it matches certain criteria (psuedobools), I noticed these work the same:

program:
	if stored_returnstrueifvalid() == 'True' then 'output' fi

program:
	if stored_returnstrueifvalid() then 'output' fi

When do I need I keep the "== 'True'" bit?

A conditional expression is False if it evaluates to the empty string, otherwise it is True. As such you don't need the == 'True' part if the stored template return that or the empty string.

Also, is there any good way to test two templates getting same results on a set of books aside from shuffling it between the tester and Notepad? I don't believe there's a way to have two tester instances open.

Some ways:

• You could use calibre-debug -g to have a cmd window, then use the template print() to show values in that window.
• If they are stored templates then you can compare their results in a third template.
• You can create a few extra composite columns and compare the values stored in the columns.