From 07ee4d4318ac3d68125e5e12aa5e3d217137f7f7 Mon Sep 17 00:00:00 2001
From: Michael Villari <147255440+mikevillari@users.noreply.github.com>
Date: Mon, 7 Sep 2026 23:14:55 -0400
Subject: [PATCH 1/2] fix(release): validate missing registry version argument

---
 scripts/check_registry_versions.sh | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/scripts/check_registry_versions.sh b/scripts/check_registry_versions.sh
index b690b6c8..07fe39ad 100755
--- a/scripts/check_registry_versions.sh
+++ b/scripts/check_registry_versions.sh
@@ -1,9 +1,10 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-version="${1#v}"
+version="${1:-}"
+version="${version#v}"
 [[ "$version" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]] || {
-    printf 'ERROR: expected a semantic version, got %q\n' "$1" >&2
+    printf 'ERROR: expected a semantic version, got %q\n' "${1:-}" >&2
     exit 2
 }
 

From 0ba6e074a69678b32b0ffb4ec0c07b36c94cb45d Mon Sep 17 00:00:00 2001
From: Michael Villari <147255440+mikevillari@users.noreply.github.com>
Date: Mon, 7 Sep 2026 23:16:57 -0400
Subject: [PATCH 2/2] test(release): cover missing and invalid registry
 versions

---
 tests/release/release-rehearsal.test.sh | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/tests/release/release-rehearsal.test.sh b/tests/release/release-rehearsal.test.sh
index dac49637..eb94d9c7 100755
--- a/tests/release/release-rehearsal.test.sh
+++ b/tests/release/release-rehearsal.test.sh
@@ -4,6 +4,27 @@ set -euo pipefail
 repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
 rehearsal="${repo_root}/scripts/release_rehearsal.sh"
 
+# Invalid registry versions must fail validation before attempting any network
+# requests, including when no positional argument was supplied.
+assert_invalid_registry_version() {
+    local output status
+    if output="$(bash "${repo_root}/scripts/check_registry_versions.sh" "$@" 2>&1)"; then
+        printf 'FAIL: registry preflight accepted an invalid version\n' >&2
+        exit 1
+    else
+        status=$?
+    fi
+    if [[ "$status" -ne 2 ]]; then
+        printf 'FAIL: registry preflight expected exit 2, got %s: %s\n' "$status" "$output" >&2
+        exit 1
+    fi
+    grep -Fq 'ERROR: expected a semantic version' <<<"$output"
+}
+
+assert_invalid_registry_version nope
+assert_invalid_registry_version
+assert_invalid_registry_version ''
+
 if [[ ! -x "$rehearsal" ]]; then
     printf 'FAIL: release rehearsal is missing or not executable: %s\n' "$rehearsal" >&2
     exit 1