Autocomplete improvements #952

Job	Run time
lint	37s
build	31s
cleanup_buckets	25s
test-docker	5m 41s
test-linux-bundle	8m 33s
test-windows-bundle (windows-2019)	24m 55s
test (ubuntu-latest, 3.7)	5m 47s
test-windows-bundle (windows-latest)	10m 34s
test (ubuntu-latest, 3.8)	49s
test (ubuntu-latest, 3.9)	45s
test (ubuntu-latest, 3.10)	58s
test (ubuntu-latest, 3.11)	46s
test (ubuntu-latest, 3.12)	5m 44s
test (ubuntu-latest, pypy-3.10-nightly)	9m 23s
test (macos-latest, 3.7)	7m 42s
test (macos-latest, 3.8)	1m 7s
test (macos-latest, 3.9)	1m 37s
test (macos-latest, 3.10)	1m 56s
test (macos-latest, 3.11)	1m 3s
test (macos-latest, 3.12)	21m 34s
test (windows-latest, 3.7)	21m 59s
test (windows-latest, 3.8)	1m 30s
test (windows-latest, 3.9)	1m 34s
test (windows-latest, 3.10)	2m 5s
test (windows-latest, 3.11)	1m 49s
test (windows-latest, 3.12)	7m 15s
doc	1m 37s
	2h 28m 16s

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