On 07/29/2015 11:08 AM, Mikolaj Izdebski wrote:
From C-style operators I would prefer single-character ones for two
reasons:
1) Two-character operators may suggest short-circuit evaluation -
"Requires: foo || bar" can be misunderstood as "require foo, or bar if
and only if foo is not available", which is not how that works. There is
no such problem with single-character operators. In other words,
"|" and "&" operators are commutative, but "||" and
"&&" are not.
2) Debian uses single-character operators. Cross-distro consistency and
less confusion for people working on both Fedora and Debian is a plus.
1) and 2) contradict each other. In practice, “|“ in dependencies is
not commutative due to virtual packages and buildd installation choices.
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Florian Weimer / Red Hat Product Security