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LibRegex: Ensure the GoBack operation decrements the code unit index

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This was missed in commit 27d555bab0.
This commit is contained in:
Timothy Flynn 2021-08-16 10:28:26 -04:00 • committed by Ali Mohammad Pur
parent c4ee576531
commit 325eabc770
3 changed files with 33 additions and 2 deletions
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4
Tests/LibRegex/Regex.cpp
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@ -637,6 +637,8 @@ TEST_CASE(ECMA262_match)
{ "(a{4}){2}"sv, "aaaaaaaa"sv },
{ "(a{4}){2}"sv, "aaaaaabaa"sv, false },
{ "\\u{4}"sv, "uuuu" },
{ "(?<=.{3})f"sv, "abcdef"sv, true, (ECMAScriptFlags)regex::AllFlags::Global },
{ "(?<=.{3})f"sv, "abc😀ef"sv, true, (ECMAScriptFlags)regex::AllFlags::Global },
// ECMA262, B.1.4. Regular Expression Pattern extensions for browsers
{ "{"sv, "{"sv, true, ECMAScriptFlags::BrowserExtended },
{ "\\5"sv, "\5"sv, true, ECMAScriptFlags::BrowserExtended },
@ -694,6 +696,8 @@ TEST_CASE(ECMA262_unicode_match)
{ "\\u{1f600}"sv, "😀"sv, true, ECMAScriptFlags::Unicode },
{ "\\ud83d\\ud83d"sv, "\xed\xa0\xbd\xed\xa0\xbd"sv, true },
{ "\\ud83d\\ud83d"sv, "\xed\xa0\xbd\xed\xa0\xbd"sv, true, ECMAScriptFlags::Unicode },
{ "(?<=.{3})f"sv, "abcdef"sv, true, ECMAScriptFlags::Unicode },
{ "(?<=.{3})f"sv, "abc😀ef"sv, true, ECMAScriptFlags::Unicode },
};
for (auto& test : tests) {