Issue #25913: Leading <~ is optional now in base64.a85decode() with adobe=True.

Patch by Swati Jaiswal.

diff --cc Lib/base64.py
Simple merge

diff --cc Misc/NEWS
index ba48048753cdb164be3e97fd59a9befe6ef093dd,fd4ca59277ca884569b8aa27b5042f867ae70579..546c295ef37e50c7bf1869b43653495494b78401
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -186,9 -75,13 +186,12 @@@ Core and Builtin
  Library
  -------
  
- Issue #26186: Remove an invalid type check in importlib.util.LazyLoader.
+ - Issue #25913: Leading ``<~`` is optional now in base64.a85decode() with
+   adobe=True.  Patch by Swati Jaiswal.
+ 
+ - Issue #26186: Remove an invalid type check in importlib.util.LazyLoader.
  
 -- Issue #26367: importlib.__import__() raises SystemError like
 +- Issue #26367: importlib.__import__() raises ImportError like
    builtins.__import__() when ``level`` is specified but without an accompanying
    package specified.