Autocomplete improvements #909

Job	Run time
lint	30s
cleanup_buckets	26s
build	29s
test-windows-bundle (windows-2019)	2m 51s
test-windows-bundle (windows-latest)	2m 33s
test-linux-bundle	1m 41s
test-docker	3m 31s
test (ubuntu-latest, 3.7)	27s
test (ubuntu-latest, 3.8)	29s
test (ubuntu-latest, 3.9)	26s
test (ubuntu-latest, 3.10)	54s
test (ubuntu-latest, 3.11)	3m 45s
test (ubuntu-latest, 3.12)	57s
test (ubuntu-latest, pypy-3.10-nightly)	8m 50s
test (macos-latest, 3.7)	54s
test (macos-latest, 3.8)	45s
test (macos-latest, 3.9)	51s
test (macos-latest, 3.10)	1m 6s
test (macos-latest, 3.11)	5m 30s
test (macos-latest, 3.12)	1m 35s
test (windows-latest, 3.7)	1m 20s
test (windows-latest, 3.8)	1m 14s
test (windows-latest, 3.9)	1m 23s
test (windows-latest, 3.10)	1m 44s
test (windows-latest, 3.11)	7m 19s
test (windows-latest, 3.12)	2m 4s
doc	54s
	54m 28s

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