Added 'echo' to config

The 'echo' option in config determines if the kernel should echo single commands.

README.md

@@ -23,8 +23,8 @@ installer cannot find any Stata installation.
 
 The location of the configuration file is:
 
-- `[prefix]/etc/pykernel-stata.conf` if `--sys-prefix` or `--prefix` is specified.
--  `~/.pykernel-stata.conf` otherwise.
+- `[prefix]/etc/pystata-kernel.conf` if `--sys-prefix` or `--prefix` is specified.
+-  `~/.pystata-kernel.conf` otherwise.
 
 If a configuration file exists in both locations, the user version takes precedent. 
 
@@ -44,6 +44,9 @@ The following settings are permitted inside the configuration file:
     Default is 'be'.
 - `graph_format`: Graph format. Acceptable values are 'png', 'pdf', 'svg' and 'pystata'.
     Specify the last option if you want to use `pystata`'s setting. Default is 'png'. 
+- `echo`: If set to 'True', the kernel will echo the command while running a cell with only
+    a single command. This setting has no effect on cells containing multiple commands.
+    Default is 'False'.
 
 Settings must be under the title `[pystata-kernel]`. Example:
 

pystata-kernel/config.py

@@ -12,7 +12,11 @@ def get_config():
     global_config_path = Path(os.path.join(sys.prefix,'etc','pystata-kernel.conf'))
     user_config_path = Path('~/.pystata-kernel.conf').expanduser()
 
-    env = {'stata_dir': None, 'edition': None, 'graph_format': 'png'}
+    env = {'stata_dir': None, 
+            'edition': None, 
+            'graph_format': 'png',
+            'echo': 'False'
+            }
 
     for cpath in (global_config_path,user_config_path):
         try:

pystata-kernel/kernel.py

@@ -26,6 +26,7 @@ def __init__(self, **kwargs):
         super().__init__(**kwargs)
         self.stata_ready = False
         self.shell.execution_count = 0
+        self.echo = False
 
     def do_execute(self, code, silent, store_history=True, user_expressions=None,
                    allow_stdin=False):
@@ -43,12 +44,15 @@ def do_execute(self, code, silent, store_history=True, user_expressions=None,
                 pass
             else:
                 set_graph_format(env['graph_format'])
+
+            if env['echo'] == 'True':
+                self.echo = True
 
             self.stata_ready = True
 
         # Execute Stata code
         from pystata.stata import run
-        run(code, quietly=False, inline=True)
+        run(code, quietly=False, inline=True, echo=self.echo)
         self.shell.execution_count += 1
 
         return {'status': 'ok',