diff -r c3679f96020b -r 38fde37c3766 svgui/pyjs/build.py
--- a/svgui/pyjs/build.py	Sat Aug 19 00:30:22 2017 +0300
+++ b/svgui/pyjs/build.py	Sat Aug 19 00:58:44 2017 +0300
@@ -672,57 +672,66 @@
     global app_platforms
 
     parser = OptionParser(usage=usage, version=version)
-    parser.add_option("-o",
-                      "--output",
-                      dest="output",
-                      help="directory to which the webapp should be written"
-    )
-    parser.add_option("-j",
-                      "--include-js",
-                      dest="js_includes",
-                      action="append",
-                      help="javascripts to load into the same frame as the rest of the script"
-    )
-    parser.add_option("-I",
-                      "--library_dir",
-                      dest="library_dirs",
-                      action="append",
-                      help="additional paths appended to PYJSPATH"
-    )
-    parser.add_option("-D",
-                      "--data_dir",
-                      dest="data_dir",
-                      help="path for data directory"
-    )
-    parser.add_option("-m",
-                      "--dynamic-modules",
-                      action="store_true",
-                      dest="dynamic",
-                      default=False,
-                      help="Split output into separate dynamically-loaded modules (experimental)"
-    )
-    parser.add_option("-P",
-                      "--platforms",
-                      dest="platforms",
-                      help="platforms to build for, comma-separated"
-    )
-    parser.add_option("-d",
-                      "--debug",
-                      action="store_true",
-                      dest="debug"
-    )
-    parser.add_option("-O",
-                      "--optimize",
-                      action="store_true",
-                      dest="optimize",
-                      default=False,
-                      help="Optimize generated code (removes all print statements)",
-    )
-    parser.add_option("-c",
-                      "--cache_buster",
-                      action="store_true",
-                      dest="cache_buster",
-                      help="Enable browser cache-busting (MD5 hash added to output filenames)"
+    parser.add_option(
+        "-o",
+        "--output",
+        dest="output",
+        help="directory to which the webapp should be written"
+    )
+    parser.add_option(
+        "-j",
+        "--include-js",
+        dest="js_includes",
+        action="append",
+        help="javascripts to load into the same frame as the rest of the script"
+    )
+    parser.add_option(
+        "-I",
+        "--library_dir",
+        dest="library_dirs",
+        action="append",
+        help="additional paths appended to PYJSPATH"
+    )
+    parser.add_option(
+        "-D",
+        "--data_dir",
+        dest="data_dir",
+        help="path for data directory"
+    )
+    parser.add_option(
+        "-m",
+        "--dynamic-modules",
+        action="store_true",
+        dest="dynamic",
+        default=False,
+        help="Split output into separate dynamically-loaded modules (experimental)"
+    )
+    parser.add_option(
+        "-P",
+        "--platforms",
+        dest="platforms",
+        help="platforms to build for, comma-separated"
+    )
+    parser.add_option(
+        "-d",
+        "--debug",
+        action="store_true",
+        dest="debug"
+    )
+    parser.add_option(
+        "-O",
+        "--optimize",
+        action="store_true",
+        dest="optimize",
+        default=False,
+        help="Optimize generated code (removes all print statements)",
+    )
+    parser.add_option(
+        "-c",
+        "--cache_buster",
+        action="store_true",
+        dest="cache_buster",
+        help="Enable browser cache-busting (MD5 hash added to output filenames)"
     )
 
     parser.set_defaults(output="output", js_includes=[], library_dirs=[],