Make the output suffix optional

IPython/nbconvert/nbconvertapp.py

@@ -18,7 +18,7 b' from IPython.core.application import BaseIPythonApplication, base_aliases, base_'
 from IPython.core.profiledir import ProfileDir
 from IPython.config import catch_config_error, Configurable
 from IPython.utils.traitlets import (
-    Unicode, List, Instance, DottedObjectName, Type, CaselessStrEnum,
+    Unicode, List, Instance, DottedObjectName, Type, CaselessStrEnum, Bool,
 )
 from IPython.utils.importstring import import_item
 
@@ -66,6 +66,10 b' nbconvert_flags.update({'
     'stdout' : (
         {'NbConvertApp' : {'writer_class' : "StdoutWriter"}},
         "Write notebook output to stdout instead of files."
+        ),
+    'no-output-suffix' : (
+        {'NbConvertApp' : {'use_output_suffix' : False}},
+        "Do not apply a suffix to filenames when converting to notebook format."
         )
 })
 
@@ -100,6 +104,13 b' class NbConvertApp(BaseIPythonApplication):'
             can only be used when converting one notebook at a time.
             ''')
 
+    use_output_suffix = Bool(
+        True, 
+        config=True,
+        help="""Whether to apply a suffix prior to the extension (only relevant
+            when converting to notebook format). The suffix is determined by
+            the exporter, and is usually '.nbconvert'.""")
+
     examples = Unicode(u"""
         The simplest way to use nbconvert is
         
@@ -303,7 +314,7 b' class NbConvertApp(BaseIPythonApplication):'
                       exc_info=True)
                 self.exit(1)
             else:
-                if 'output_suffix' in resources and not self.output_base:
+                if self.use_output_suffix and 'output_suffix' in resources and not self.output_base:
                     notebook_name += resources['output_suffix']
                 write_results = self.writer.write(output, resources, notebook_name=notebook_name)