[exim-dev] [Bug 672] New: strict_acl_vars failures in the un…

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http://bugs.exim.org/show_bug.cgi?id=672
           Summary: strict_acl_vars failures in the unused half of a
                    conditional
           Product: Exim
           Version: 4.69
          Platform: x86
        OS/Version: Linux
            Status: NEW
          Severity: bug
          Priority: medium
         Component: String expansion
        AssignedTo: nigel@???
        ReportedBy: anomie@???
                CC: exim-dev@???

Created an attachment (id=232)
--> (http://bugs.exim.org/attachment.cgi?id=232)
Patch to disable strict_acl_vars when expanding the unused half of a
conditional

Both of these will give an unknown variable error instead of the expected "ok"
when strict_acl_vars is set:
${if ={0}{1} {$acl_m_unset_variable}{ok}}
${if ={0}{0} {ok}{$acl_m_unset_variable}}

It is counterintuitive that the non-matching result of a conditional can still
cause unknown variable errors when that half has no other side effects. It also
renders the "isset" conditional in my patch to bug #474 rather useless.

The attached patch fixes the issue by turning off strict_acl_vars when
expanding the non-matching result.


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