org-src-tab-acts-natively

org-src-tab-acts-natively is a variable defined in `org-src.el'.
Its value is

nil

Documentation:
If non-nil, the effect of TAB in a code block is as if it were
issued in the language major mode buffer.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 24.1 of Emacs.