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 | 'Provides "Strip trailing whitespace" under the "Format" menu.'
__author__ = "Roger D. Serwy <roger.serwy at gmail.com>"
class RstripExtension:
    menudefs = [
        ('format', [None,
               ('Strip trailing whitespace', '<<do-rstrip>>'),
       ]),]
    def __init__(self, editwin):
        self.editwin = editwin
        self.editwin.text.bind("<<do-rstrip>>", self.do_rstrip)
    def do_rstrip(self, event=None):
        text = self.editwin.text
        undo = self.editwin.undo
        undo.undo_block_start()
        end_line = int(float(text.index('end'))) + 1
        for cur in range(1, end_line):
            txt = text.get('%i.0' % cur, '%i.0 lineend' % cur)
            cut = len(txt.rstrip())
            text.delete('%i.%i' % (cur, cut), '%i.0 lineend' % cur)
        undo.undo_block_stop()
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