getenv returns nil if var name string is empty

alandipert · Dec 6, 2013 · 380b959 · 380b959
1 parent adad851
commit 380b959
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/gherkin b/gherkin
@@ -668,7 +668,7 @@ apply_primitive() {
       r="$ret"
       ;;
     $GETENV)
-      eval "r=\$${arg0}"
+      [[ -n "$arg0" ]] && eval "r=\$${arg0}"
       [[ -z "$r" ]] && r=$NIL
       ;;
     $EVAL)       lisp_eval "$arg0"    ;;