Fix merge of output for multi-languages books

1 files changed, 12 insertions, 2 deletions

diff --git a/lib/generate/index.js b/lib/generate/index.js
index 2a3e441..359708b 100644
--- a/lib/generate/index.js
+++ b/lib/generate/index.js
@@ -115,14 +115,24 @@ var generate = function(options) {
 
 
 var generateMultiLang = function(options) {
+    var langsSummary;
     options.output = options.output || path.join(options.input, "_book");
 
     // Multi-languages book
     return fs.readFile(path.join(options.input, "LANGS.md"), "utf-8")
 
-    // Generate sub-books
+    // Clean output folder
     .then(function(_langsSummary) {
-        options.langsSummary = parse.langs(_langsSummary);
+        langsSummary = _langsSummary;
+        return fs.remove(options.output);
+    })
+    .then(function() {
+        return fs.mkdirp(options.output);
+    })
+
+    // Generate sub-books
+    .then(function() {
+        options.langsSummary = parse.langs(langsSummary);
 
         // Generated a book for each valid entry
         return Q.all(