Diffs for arrays of strings can be pretty confusing

[lukechilds]

If you do t.deepEqual (and I think also t.is) on two arrays containing strings. If there are a large amount of strings and they only differ slightly the output is very confusing. It appears that as soon as a new entry in an array has shifted the items after it across, AVA text diffs every single entry against the same index in the original array.

e.g: An array with 219 strings that has had 6 additions and 1 deletion:
AVA diff: https://travis-ci.org/lukechilds/window/jobs/266859856
GitHub diff: lukechilds/window@6ecbade

[novemberborn]

Yea I would have expected the GitHub diff. Would you be able to share an isolated test case at https://github.com/concordancejs/concordance?

There's an existing issue for improving string diffs, but the issue here seems to be that Concordance isn't correctly detecting missing / extraneous array items. But still, see concordancejs/concordance#29 😄