[mypyc] Add urlsafe_b64encode and urlsafe_b64decode to librt.base64 #20274
+218
−33
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p-sawicki
approved these changes
Nov 20, 2025
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According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅ |
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These just have a post-processing or a pre-processing step but otherwise share the implementation with the non-urlsafe variants. We can break the ABI since base64 functions are still experimental.
I checked that at least gcc and clang are able to vectorize the pre/post processing loops (when using -O3).