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ZdZdZdZ ej!dkr�dZ"eeee fZ#ndZ"eeeefZ#e$dd �e%e&e"��D��Z'd!Z(Gd"d#�d#�Z)e%de&e"�>�Z*d$d �e*D�Z+d%d&�Z,e,e*�Z-gZ.e*D]BZ/dZ0e%e&e"��D] Z1de1>e/@�r2e0e#e1OZ0�q2e.�2e0��qGd'd(�d(�Z3d)Z4e3fde)fe&e4�dZ5e$d*d �e%e&e4��D��Z6e�7d+�Z8e�7d,�Z9d-d.�Z:d/d0�Z;iZ<d1d2�Z=d3d4�Z>e?d5k�rdd6l@mAZAeAd7dd8d9�dd:lBmCZCeCe>�dS);a�
MultiCall - a class which inherits its methods from a Tkinter widget (Text, for
example), but enables multiple calls of functions per virtual event - all
matching events will be called, not only the most specific one. This is done
by wrapping the event functions - event_add, event_delete and event_info.
MultiCall recognizes only a subset of legal event sequences. Sequences which
are not recognized are treated by the original Tk handling mechanism. A
more-specific event will be called before a less-specific event.

The recognized sequences are complete one-event sequences (no emacs-style
Ctrl-X Ctrl-C, no shortcuts like <3>), for all types of events.
Key/Button Press/Release events can have modifiers.
The recognized modifiers are Shift, Control, Option and Command for Mac, and
Control, Alt, Shift, Meta/M for other platforms.

For all events which were handled by MultiCall, a new member is added to the
event instance passed to the binded functions - mc_type. This is one of the
event type constants defined in this module (such as MC_KEYPRESS).
For Key/Button events (which are handled by MultiCall and may receive
modifiers), another member is added - mc_state. This member gives the state
of the recognized modifiers, as a combination of the modifier constants
also defined in this module (for example, MC_SHIFT).
Using these members is absolutely portable.

The order by which events are called is defined by these rules:
1. A more-specific event will be called before a less-specific event.
2. A recently-binded event will be called before a previously-binded event,
   unless this conflicts with the first rule.
Each function will be called at most once for each event.
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