1 files changed, 10 insertions, 0 deletions
diff --git a/bin/return-assignment b/bin/return-assignment
index b29764c..3f355bd 100755
--- a/bin/return-assignment
+++ b/bin/return-assignment
@@ -41,6 +41,16 @@ if [ $# -eq 1 ] && \
   exit
 fi
 
+if [ $# -ne 5 ]; then
+  >&2 printf 'return-assignment: Wrong number of arguments (%s)\n' \
+    "$#"
+  >&2 printf 'call either:\n'
+  >&2 printf '  return-assignment ABORT\n'
+  >&2 printf '  return-assignment pkgbase git_revision mod_git_revision repository ERROR\n'
+  >&2 printf '  return-assignment pkgbase git_revision mod_git_revision repository sub-pkgrel\n'
+  exit 2
+fi
+
 # Create a lock file and a trap.
 
 exec 9> "${build_list_lock_file}"