GitLab

* don't add space before single letter chars that don't have a merge

* fix the fix

* fixup

* add a test

* more testing

* fixup

* hack to make sure fast is also fixed

* update switch transformers test

* revert convert slow

* Update src/transformers/models/t5/tokenization_t5.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* add typechecking

* quality

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Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>