apostrophe not considered with tkinter's wordstart and wordend

[ravas]

I copied the GUI creation from my personal text editor. 
The scrollbar and stretchability could have been left out, for sure. 
You're only seeing a portion of a more complex GUI.

After writing several Tkinter applications, 
I decided that subclassing without a clear reason 
only had the effect of polluting the namespace of my class. 
I like seeing only my attributes and methods during code completion.

Thanks for your interest and help.