https://bugs.exim.org/show_bug.cgi?id=2579
Bug ID: 2579
Summary: ${if def:recipients ...} should behave as testing
other variables that do not exist (yet)
Product: Exim
Version: 4.93
Hardware: All
OS: All
Status: NEW
Severity: bug
Priority: medium
Component: String expansion
Assignee: unallocated@???
Reporter: hs@???
CC: exim-dev@???
Using `${if def:domain ...}` prevents from using $domain in places where it is
not (yet) set. But using `${if def:recipients ...}` fails with complaints about
an unknown variable in places where it is not (yet) available.
I believe, the behviour of `def:recipients` should match the behaviour of the
other def: tests. Doesn't matter whether $recipients is filled "on demand" or
nor. Because this is not obvious to the user.
Maybe returning "" (instead of NULL) from fn_recipients() in expand.c would do
it.
(I'm just running the testsuite, to see if it breaks other pieces.)
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