Ruby

Merge pull request #1589 from ksss/colored-diff #3951

Job	Run time
windows (windows-2019, ucrt)	55s
test (master-nightly-focal, test)	2m 51s
windows (windows-2019, mswin)	1m 50s
test (master-nightly-focal, stdlib_test)	2m 30s
windows (windows-2022, ucrt)	1m 23s
test (master-nightly-focal, rubocop validate test_doc build test_generate_stdlib)	3m 26s
windows (windows-2022, mswin)	1m 39s
test (master-nightly-focal, lexer confirm_lexer)	4m 7s
test (master-nightly-focal, lexer compile)	5m 10s
test (3.2-dev-focal, test)	2m 17s
test (3.2-dev-focal, stdlib_test)	2m 36s
test (3.2-dev-focal, rubocop validate test_doc build test_generate_stdlib)	2m 22s
test (3.2-dev-focal, lexer confirm_lexer)	4m 5s
test (3.2-dev-focal, lexer compile)	4m 52s
test (3.1-dev-focal, test)	2m 32s
test (3.1-dev-focal, rubocop validate test_doc build test_generate_stdlib)	3m 26s
test (3.1-dev-focal, lexer confirm_lexer)	4m 49s
test (3.1-dev-focal, lexer compile)	4m 2s
test (3.0-dev-focal, test)	2m 31s
test (3.0-dev-focal, rubocop validate test_doc build test_generate_stdlib)	3m 0s
test (3.0-dev-focal, lexer confirm_lexer)	4m 0s
test (3.0-dev-focal, lexer compile)	4m 52s
	1h 9m 15s

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