Details
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Improvement
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Status: Open
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Trivial
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Resolution: Unresolved
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Trunk, Upcoming Branch
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None
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None
Description
I want to replace
?default(value)
by
!value
in Freemarker templates, that's 1394 cases!
But before doing so I prefer to wait for a 2.4 Freemarker version because we already experienced an issue at OFBIZ-4902, see http://svn.apache.org/viewvc?view=revision&revision=r1624876
Actually I know now that it was not a bug of ours but one of Freemarker:
Warning! If you have a composite expression after the !, like 1 + x, always use parenthesses, like ${x!(1 + y)} or ${(x!1) + y)}, depending on which interpretation you meant. That's needed because due to a programming mistake in FreeMarker 2.3.x, the precedence of ! (when it's used as default value operator) is very low at its right side. This means that, for example, ${x!1 + y} is misinterpreted by FreeMarker as ${x!(1 + y)} while it should mean ${(x!1) + y}. This programming error will be fixed in FreeMarker 2.4, so you should not utilize this wrong behavior, or else your templates will break with FreeMarker 2.4!