Better keyword_casing=auto heuristic.
#1473
Merged
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Description
Consider both the first and last letter of the user's text when choosing case for completion candidates when keyword_casing=auto.
The issue is that when the last character typed is non-alphabetic such as underscore, then
islower()is False. Better to check both the first and last character of the user's text. If either of them is lowercase then we complete with lowercase.Fixes #1462 .
Checklist
changelog.md.AUTHORSfile (or it's already there).uv run ruff check && uv run ruff format && uv run mypy --install-types .to lint and format the code.