Previously, a list of commands was always considered repeatable.
This behavior was added at 6710527a (and moved around since then),
in order to fix#807 (impossible to make a repeatable list).
The problem was that a list doesn't have the normal repeatability
flags and so it was never repeatable, so it was hardcoded to be
repeatable instead. Presumably it was deemed good enough.
However, this made it impossible to have a non-repeatable list.
This commit changes the behavior so that a list repeatability is
that of the first command at the list.
This way, any list can be made either repeatable or non-repeatable
using the following idiom (e.g. at input.conf), based on the fact
that the "ignore" command is not repeatable by default:
x ignore; cmd1...; cmd2... # non-repeatable
y repeatable ignore; cmd1...; cmd2... # repeatable
Fixes#7841
3abb23d70f