Add setting to customize traceback frame locals reporting

src/decorators.py

@@ -80,31 +80,41 @@ class print_traceback:
             _local.level -= 1
             return False # the outermost caller should handle this
 
+        variables = ["", None]
+
+        if _local.handler is None:
+            _local.handler = chain_exceptions(exc_value)
+
+        if var.TRACEBACK_VERBOSITY > 0:
+            word = "\nLocal variables from frame #{0} (in {1}):\n"
+            variables.append(None)
             frames = []
 
             while tb is not None:
-            if tb.tb_frame.f_locals.get("_ignore_locals_") or not tb.tb_frame.f_locals:
+                if tb.tb_next is not None and tb.tb_frame.f_locals.get("_ignore_locals_") or not tb.tb_frame.f_locals:
                     frames.append(None)
                 else:
                     frames.append(tb.tb_frame)
                 tb = tb.tb_next
 
-        if _local.handler is None:
+            if var.TRACEBACK_VERBOSITY < 2:
-            _local.handler = chain_exceptions(exc_value)
+                word = "Local variables from innermost frame (in {1}):\n"
-
+                frames = [frames[-1]]
-        variables = ["", None, None]
 
             with _local.handler:
                 for i, frame in enumerate(frames, start=1):
                     if frame is None:
                         continue
-                variables.append("\nLocal variables from frame #{0} (in {1}):\n".format(i, frame.f_code.co_name))
+                    variables.append(word.format(i, frame.f_code.co_name))
                     for name, value in frame.f_locals.items():
                         variables.append("{0} = {1!r}".format(name, value))
 
             if len(variables) > 3:
                 variables.append("\n")
+                if var.TRACEBACK_VERBOSITY > 1:
                     variables[2] = "Local variables in all frames (most recent call last):"
+                else:
+                    variables[2] = ""
             else:
                 variables[2] = "No local variables found in all frames."
 

src/settings.py

@@ -204,6 +204,8 @@ DEV_CHANNEL = ""
 DEV_PREFIX = ""
 PASTEBIN_ERRORS = False
 
+TRACEBACK_VERBOSITY = 2 # 0 = no locals at all, 1 = innermost frame's locals, 2 = all locals
+
 # How often to ping the server (in seconds) to detect unclean disconnection
 SERVER_PING_INTERVAL = 120