/bin/sh -e function parsing strangeness

[Vasil Dimov]

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Can anyone explain this:

% sh -ec 'f() { return 5 ; } ; if f ; then echo tt ; else echo ff ; fi'
ff
% sh -ec 'f() { return 5 ; : ; } ; if f ; then echo tt ; else echo ff ; fi'
% echo $?
5

If any commands appear after the return statement in a function,
then -e flag triggers untested command failure although function call is
tested with `if' statement.

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