Anthony Sottile <asott...@umich.edu> added the comment:

would it be possible to expose `parse_template` -- or at least some way to 
validate that a regex replacement string is correct prior to executing the 
replacement?

I'm currently using that for my text editor: 
https://github.com/asottile/babi/blob/d37d7d698d560aef7c6a0d1ec0668672e039bd9a/babi/screen.py#L501

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nosy: +Anthony Sottile

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue47152>
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