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epriestley 31ee49b14d Fix Javascript busy loop when trying to delete tokens from an empty tokenizer
Summary:
Fixes T13147. In D19437, I changed this logic to support deleting the `""` (empty string) token, but `[].pop()` returns `undefined`, not `null`, if the list is empty and I didn't think to try deleting an empty input.

Fix the logic so we don't end up in a loop if the input is empty.

Test Plan:
  - In any browser, deleted all tokens in a tokenizer; then pressed delete again.
  - Before: tab hangs in an infinte loop.
  - After: smooth sailing.

Reviewers: amckinley, avivey

Reviewed By: avivey

Maniphest Tasks: T13147

Differential Revision: https://secure.phabricator.com/D19456
2018-06-01 14:51:06 -07:00
..
d3 Swap charts from gRaphael to D3 2016-02-01 10:36:59 -08:00
font Remove "Aleo" as specialized font for headers 2017-03-22 09:57:00 -07:00
javelin Fix Javascript busy loop when trying to delete tokens from an empty tokenizer 2018-06-01 14:51:06 -07:00