Add function to strip trailing path separators and preserve root path… #1191

Job	Run time
Tests in Containers (ci-homebrew-container, ubuntu-latest, homebrew/brew, x86_64-unknown-linux-musl)	3m 34s
Builds (macos-14, aarch64-apple-darwin, yes)	2m 37s
Tests (windows-latest, x86_64-pc-windows-msvc, yes)	7m 29s
Builds (windows-latest, aarch64-pc-windows-msvc)	4m 2s
Tests (ubuntu-latest, x86_64-unknown-linux-musl, yes)	8m 21s
Tests in Containers (ci-jupyter-container, ubuntu-latest, mcr.microsoft.com/devcontainers/univers...	4m 19s
Builds (ubuntu-latest, x86_64-unknown-linux-musl, yes)	1m 46s
Tests (macos-14, aarch64-apple-darwin, yes)	13m 19s
Builds (windows-latest, x86_64-pc-windows-msvc)	3m 52s
Env Tests (ci-poetry-project, windows-latest, x86_64-pc-windows-msvc)	4m 50s
Env Tests (ci-poetry-project, ubuntu-latest, x86_64-unknown-linux-musl)	2m 26s
Env Tests (ci-poetry-global, windows-latest, x86_64-pc-windows-msvc)	49s
Env Tests (ci-poetry-custom, windows-latest, x86_64-pc-windows-msvc)	4m 45s
Tests (macos-latest, x86_64-apple-darwin, yes)	13m 29s
Builds (macos-latest, x86_64-apple-darwin, yes)	2m 20s
Env Tests (ci-poetry-custom, ubuntu-latest, x86_64-unknown-linux-musl)	2m 21s
Env Tests (ci-poetry-global, ubuntu-latest, x86_64-unknown-linux-musl)	2m 42s
	1h 23m 1s

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