[3.11] gh-84461: Improve WebAssembly in-browser demo (GH-91879) #94480
+99
−25
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Buffer standard input line-by-line
Add non-root .editorconfig for JS & HTML indent
Add support for clearing REPL with CTRL+L
Support unicode in stdout and stderr
Remove \r\n normalization
Note that local .editorconfig file extends root
Only normalize lone \r characters (convert to \n)
Skip non-printable characters in buffered input
Fix Safari bug (regex lookbehind not supported)
Co-authored-by: Christian Heimes christian@python.org
(cherry picked from commit a8e333d)
Co-authored-by: Trey Hunner trey@treyhunner.com