[issue17535] IDLE: Add an option to show line numbers along the left side of the editor window, and have it enabled by default.

[Mark Roseman]

Mark Roseman added the comment:

Just as a point of information and possible future reference, there is a 'tklib' (collection of Tk-related modules written in Tcl) module called 'ctext' which does syntax highlighting as well as implements the line numbering thing (also using a text widget beside the main text). There may be some tricks in there to steal.

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<http://bugs.python.org/issue17535>
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