[docs] [issue28450] Misleading/inaccurate documentation about unknown escape sequences in regular expressions
Barry A. Warsaw
report at bugs.python.org
Tue Nov 22 14:10:59 EST 2016
Barry A. Warsaw added the comment:
I disagree that the documentation is at fault. This is known to break existing code, e.g. http://bugs.python.org/msg281496
I think it's not correct to change the documentation but leave the error-raising behavior for 3.6 because the deprecation was never documented in 3.5 so this will look like a gratuitous regression. issue27030 for reference.
I also question whether it makes sense for such escapes to be illegal in the repl argument of re.sub(). I could understand for this limitation in the pattern argument, but that's not what's causing the error.
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nosy: +barry
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<http://bugs.python.org/issue28450>
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