Adjust "info frame" for new API

Author: rocky

trepan/processor/command/info_subcmd/frame.py

@@ -21,7 +21,7 @@
 from trepan.lib.complete import complete_token
 from trepan.lib.disassemble import PYTHON_OPCODES as python_opcodes
 from trepan.lib.format import Function, Keyword, format_token
-from trepan.lib.stack import format_function_name
+from trepan.lib.stack import format_function_name, get_column_start_from_frame
 from trepan.lib.thred import current_thread_name
 from trepan.processor import frame as Mframe
 from trepan.processor.print import format_code, format_frame
@@ -150,6 +150,13 @@ def run(self, args):
             formatted_text = highlight_string(line_text.strip(), style=style)
             self.msg_nocr(f"  current line number: {frame.f_lineno}: {formatted_text}")
 
+        start_column = get_column_start_from_frame(frame)
+        if start_column >= 0:
+            self.msg(f"  starting column: {start_column}")
+        else:
+            formatted_text = highlight_string(line_text.strip(), style=style)
+            self.msg_nocr(f"  current line number: {frame.f_lineno}: {formatted_text}")
+
         f_lasti = frame.f_lasti
         if f_lasti >= 0:
             opname = python_opcodes.opname[code.co_code[f_lasti]]