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http://bugs.exim.org/show_bug.cgi?id=1518
--- Comment #5 from Todd Lyons <tlyons@???> 2014-08-26 15:46:24 ---
*OH*, I misread the debug output the first time. I thought it was moving on to
the next router instead of accepting this one.
What happens is that it's expanding to more than you think. In order to allow
any arbitrary string to be set, the number of trailing closing brackets can be
more than the number of opening ones.
And that also explains why it's being accepted:
[todd@tlyons ~]$ exim -be '${if eq {${lc:GOOGLE.com}} {google.com}} {yes}
{no}}'
true {yes} {no}}
[todd@tlyons ~]$ exim -be '${if eq {${lc:WHOIS.com}} {google.com}} {yes} {no}}'
{yes} {no}}
In each case, the condition appears to be a string, which expands to a yes,
AFAIU. This is unverified from the code, but I'll try and dig in to it.
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