Fixed error position for the backslash at the end of regex pattern.
Merge heads
Issue #22845: Improved formatting of dis documentation.

--HG--
branch : 3.4
Issue #22845: Improved formatting of dis documentation.
Upgrade setuptools to 7.0

--HG--
branch : 3.4
Merge - Upgrade setuptools to 7.0
Minor code clean up and improvements in the re module.