[Robustness] avoid a set -u error when $_ is unset

Sourcing nvm.sh under `set -u` on a POSIX shell that leaves `$_` unset (e.g. busybox ash or dash on Alpine, where the parent shell does not export it) aborted at `NVM_SCRIPT_SOURCE="$_"`. Default to empty; the only consumer already falls back to `$0`.
2026-07-18 12:58:21 +08:00 · 2026-07-14 23:16:39 -07:00
parent 86c937436d
commit f1e7a84cb5
1 changed files with 1 additions and 1 deletions
@@ -11,7 +11,7 @@
 { # this ensures the entire script is downloaded #

 # shellcheck disable=SC3028
-NVM_SCRIPT_SOURCE="$_"
+NVM_SCRIPT_SOURCE="${_:-}"

 nvm_is_zsh() {
  [ -n "${ZSH_VERSION-}" ]