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http://bugs.exim.org/show_bug.cgi?id=167
--- Comment #12 from Phil Pennock <exim-dev@???> 2008-09-12 11:28:38 ---
Created an attachment (id=271)
--> (
http://bugs.exim.org/attachment.cgi?id=271)
Adds "bool" expansion condition
This feature request, in variant forms, has come up more recently. In
particular, there's a desire to be able to store a boolean value in an ACL
variable and then reference it cleanly from condition logic.
I approached this by adding a new expansion condition, "bool", which takes one
parameter, which needs to evaluate to one of the strings
"true"/"yes"/"false"/"no" (leading whitespace permitted).
$ ./exim -be
> ${if bool{true} {foo}{bar}}
foo
>
This is sufficiently small and self-contained and does provide a slightly
cleaner syntax than a straight 'eq' and offers type-checking, insofar as a
value other than the four listed above results in an expansion failure. :)
(I have no personal use-cases for it at this time, but have wanted it in the
past and worked around it).
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