ivy-alt-done confused by files with common prefix

[basil-conto]

The following recipe is based on a report by @drrlvn in #1102:

1. make plain
2. C-xd//tmpRET
3. +fooRET
4. C-xC-ffoobarRET
5. C-xC-s
6. C-xkRET
7. C-xC-ffoo
8. C-nC-j
   • Expected result: file /tmp/foobar is visited.
   • Actual result: file name completion continues in directory /tmp/foo/.

[abo-abo]

Thanks, please test.

[basil-conto]

Thanks, works for me.