[Fix] Reject bare LTS codenames in nvm install#3718
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ljharb merged 1 commit intonvm-sh:masterfrom Jan 20, 2026
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Previously, `nvm install Argon` would succeed by matching the LTS name in the version description (e.g., "v4.9.1 (Latest LTS: Argon)"), but `nvm uninstall Argon` would fail because "Argon" is not a valid alias or not a valid version. Changes: - Added pattern matching check in nvm_remote_version (nvm.sh:785-791) - Skips check for implicit aliases (node, stable, etc.) to preserve existing functionality - Added unit tests to verify LTS names are rejected while version numbers still work After this fix: - `nvm install Argon` → fails (use `nvm install lts/argon` instead) - `nvm install 4` → still works - `nvm install node` → still works - `nvm install lts/argon` → still works This makes install and uninstall behavior consistent. Fixes nvm-sh#3474.
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Problem
Users could run
nvm install Argon(or any LTS codename) and it would install successfully, butnvm uninstall Argonwould fail with "N/A version is not installed". This inconsistency was confusing.Root Cause: nvm_ls_remote uses grep which matches "Argon" in the description
v4.9.1 (Latest LTS: Argon), not just the version number.Solution
Added verification in nvm_remote_version to check if the search pattern actually exists in the version number (not just the description).
Changes
Behavior Changes
nvm install Argonnvm uninstall Argonnvm install lts/argonnvm install 4nvm install nodeTesting
nvm install Argon,nvm install 4,nvm install nodeFixes
nvm install Argonetc works, and should not #3474