[hotfix][docs] show usage if wrong option is given

deepfield · Feb 13, 2020 · 114f2b4 · 114f2b4
1 parent eea7db6
commit 114f2b4
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/docs/build_docs.sh b/docs/build_docs.sh
@@ -72,6 +72,8 @@ while getopts "piez" opt; do
  z)
  JEKYLL_CONFIG="--config _config.yml,_config_dev_zh.yml"
  ;;
+ *) echo "usage: $0 [-e|-z] [-i|-p]" >&2
+ exit 1 ;;
  esac
 done