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@@ -147,7 +147,8 b' class TerminalInteractiveShell(InteractiveShell):' | |||
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147 | 147 | @observe('editing_mode') |
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148 | 148 | def _editing_mode(self, change): |
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149 | 149 | u_mode = change.new.upper() |
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150 | self.pt_app.editing_mode = u_mode | |
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150 | if self.pt_app: | |
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151 | self.pt_app.editing_mode = u_mode | |
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151 | 152 | |
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152 | 153 | @observe('highlighting_style') |
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153 | 154 | @observe('colors') |
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