Backport PR #40994: REGR: memory_map with non-UTF8 encoding#41257

Merged

simonjayhawkins merged 4 commits intopandas-dev:1.2.xfrom

twoertwein:backport

May 25, 2021

Commits on May 2, 2021

Backport PR #40994: REGR: memory_map with non-UTF8 encoding
twoertwein
committed

Commits on May 13, 2021

Commits on May 24, 2021

Merge branch '1.2.x' of https://github.com/pandas-dev/pandas into backport
phofl
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