fix: newline before closing fence in nvchecker stanza echov1.2.5

The body branch used printf '%s' (no trailing newline) so the closing
fence glued onto the last body line. Use printf '%s\n'. Regression test
T16 asserts the fence sits on its own line.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2 files changed, 4 insertions, 1 deletions

diff --git a/mkhint b/mkhint
index 5bb3a69..1d7c86d 100755
--- a/mkhint
+++ b/mkhint
@@ -1041,7 +1041,7 @@ EOF
     echo "────────────────────────────"
     printf '%s\n' "$label"
     if [[ -n "$body" ]]; then
-        printf '%s' "$body"
+        printf '%s\n' "$body"
     else
         echo "# TODO: configure nvchecker source for \"${pkg}\""
     fi
diff --git a/tests/mkhint_test.sh b/tests/mkhint_test.sh
index 2af6188..8a8bd08 100755
--- a/tests/mkhint_test.sh
+++ b/tests/mkhint_test.sh
@@ -581,6 +581,9 @@ assert_contains "github owner/repo"      "$MOCK_BASE/nvchecker.toml" 'github = "
 assert_contains "github latest_release"  "$MOCK_BASE/nvchecker.toml" 'use_latest_release = true'
 assert_contains "github max_tag comment" "$MOCK_BASE/nvchecker.toml" '# use_max_tag = true'
 assert_contains "T16 stanza echoed"      "$MOCK_BASE/t16.out" 'source = "github"'
+# closing fence must sit on its own line, not glued to the last body line
+assert_contains "T16 closing fence on own line" "$MOCK_BASE/t16.out" '^────────────────────────────$'
+assert_contains "T16 prefix line intact"        "$MOCK_BASE/t16.out" 'uncomment if tags are v-prefixed$'
 
 # ── T17: --new pypi .info → pypi source section ───────────────────────────────
 echo ""