chore: checkpoint before Python removal

vendor/regex/testdata/earliest.toml

@@ -0,0 +1,52 @@
+[[test]]
+name = "no-greedy-100"
+regex = 'a+'
+haystack = "aaa"
+matches = [[0, 1], [1, 2], [2, 3]]
+search-kind = "earliest"
+
+[[test]]
+name = "no-greedy-200"
+regex = 'abc+'
+haystack = "zzzabccc"
+matches = [[3, 6]]
+search-kind = "earliest"
+
+[[test]]
+name = "is-ungreedy"
+regex = 'a+?'
+haystack = "aaa"
+matches = [[0, 1], [1, 2], [2, 3]]
+search-kind = "earliest"
+
+[[test]]
+name = "look-start-test"
+regex = '^(abc|a)'
+haystack = "abc"
+matches = [
+  [[0, 1], [0, 1]],
+]
+search-kind = "earliest"
+
+[[test]]
+name = "look-end-test"
+regex = '(abc|a)$'
+haystack = "abc"
+matches = [
+  [[0, 3], [0, 3]],
+]
+search-kind = "earliest"
+
+[[test]]
+name = "no-leftmost-first-100"
+regex = 'abc|a'
+haystack = "abc"
+matches = [[0, 1]]
+search-kind = "earliest"
+
+[[test]]
+name = "no-leftmost-first-200"
+regex = 'aba|a'
+haystack = "aba"
+matches = [[0, 1], [2, 3]]
+search-kind = "earliest"