core/actions.py: Hide the internal commands from the "dump_commands" output

- Commands with a docstring starting with a colon (e.g. ":command") are
  added to the output just as before.
- Commands without a docstring whatsoever are listed under the
  "Undocumented commands" category. Again, no change here.
- Commands with a regular docstring are hidden in the "dump_commands"
  output and should be considered an API.

1 files changed, 4 insertions, 2 deletions

diff --git a/ranger/core/actions.py b/ranger/core/actions.py
index 8167dbcf..a0d8597f 100644
--- a/ranger/core/actions.py
+++ b/ranger/core/actions.py
@@ -1113,8 +1113,10 @@ class Actions(FileManagerAware, SettingsAware):
         for cmd_name in sorted(self.commands.commands):
             cmd = self.commands.commands[cmd_name]
             if hasattr(cmd, '__doc__') and cmd.__doc__:
-                write(cleandoc(cmd.__doc__))
-                write("\n\n" + "-" * 60 + "\n")
+                doc = cleandoc(cmd.__doc__)
+                if doc[0] == ':':
+                    write(doc)
+                    write("\n\n" + "-" * 60 + "\n")
             else:
                 undocumented.append(cmd)