[PATCH 08/11] t9902-completion: ignore COMPREPLY element order in some tests

The order or possible completion words in the COMPREPLY array doesn't actually matter, as long as all the right words are in there, because Bash will sort them anyway. Yet, our tests looking at the elements of COMPREPLY always expect them to be in a specific order.

Now, this hasn't been an issue before, but the next patch is about to optimize a bit more our git-aware path completion, and as a harmless side effect the order of elements in COMPREPLY will change. Worse, the order will be downright undefined, because after the next patch path components will come directly from iterating through an associative array in 'awk', and the order of iteration over the elements in those arrays is undefined, and indeed different 'awk' implementations produce different order. Consequently, we can't get away with simply adjusting the expected results in the affected tests.

Modify the 'test_completion' helper function to sort both the expected and the actual results, i.e. the elements in COMPREPLY, before comparing them, so the tests using this helper function will work regardless of the order of elements.

Note that this change still leaves a bunch of tests depending on the order of elements in COMPREPLY, tests that focus on a specific helper function and therefore don't use the 'test_completion' helper. I would rather deal with those later, when (if ever) the need actually arises, than create unnecessary code churn now.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
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 t/t9902-completion.sh | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)