AK: Use an enum instead of a bool for String::replace(all_occurences)

This commit has no behavior changes.

In particular, this does not fix any of the wrong uses of the previous
default parameter (which used to be 'false', meaning "only replace the
first occurence in the string"). It simply replaces the default uses by
String::replace(..., ReplaceMode::FirstOnly), leaving them incorrect.

AK/String.h

@@ -291,7 +291,7 @@ public:
         return { characters(), length() };
     }
 
-    [[nodiscard]] String replace(StringView needle, StringView replacement, bool all_occurrences = false) const { return StringUtils::replace(*this, needle, replacement, all_occurrences); }
+    [[nodiscard]] String replace(StringView needle, StringView replacement, ReplaceMode replace_mode) const { return StringUtils::replace(*this, needle, replacement, replace_mode); }
     [[nodiscard]] size_t count(StringView needle) const { return StringUtils::count(*this, needle); }
     [[nodiscard]] String reverse() const;
 

AK/StringUtils.cpp

@@ -476,13 +476,13 @@ String invert_case(StringView str)
     return builder.to_string();
 }
 
-String replace(StringView str, StringView needle, StringView replacement, bool all_occurrences)
+String replace(StringView str, StringView needle, StringView replacement, ReplaceMode replace_mode)
 {
     if (str.is_empty())
         return str;
 
     Vector<size_t> positions;
-    if (all_occurrences) {
+    if (replace_mode == ReplaceMode::All) {
         positions = str.find_all(needle);
         if (!positions.size())
             return str;

AK/StringUtils.h

@@ -22,6 +22,11 @@ enum class CaseSensitivity {
     CaseSensitive,
 };
 
+enum class ReplaceMode {
+    All,
+    FirstOnly,
+};
+
 enum class TrimMode {
     Left,
     Right,
@@ -80,7 +85,7 @@ String to_snakecase(StringView);
 String to_titlecase(StringView);
 String invert_case(StringView);
 
-String replace(StringView, StringView needle, StringView replacement, bool all_occurrences = false);
+String replace(StringView, StringView needle, StringView replacement, ReplaceMode);
 size_t count(StringView, StringView needle);
 
 }
@@ -88,5 +93,6 @@ size_t count(StringView, StringView needle);
 }
 
 using AK::CaseSensitivity;
+using AK::ReplaceMode;
 using AK::TrimMode;
 using AK::TrimWhitespace;

AK/StringView.cpp

@@ -228,9 +228,9 @@ bool StringView::operator==(String const& string) const
 
 String StringView::to_string() const { return String { *this }; }
 
-String StringView::replace(StringView needle, StringView replacement, bool all_occurrences) const
+String StringView::replace(StringView needle, StringView replacement, ReplaceMode replace_mode) const
 {
-    return StringUtils::replace(*this, needle, replacement, all_occurrences);
+    return StringUtils::replace(*this, needle, replacement, replace_mode);
 }
 #endif
 

AK/StringView.h

@@ -268,7 +268,7 @@ public:
     }
 
 #ifndef KERNEL
-    [[nodiscard]] String replace(StringView needle, StringView replacement, bool all_occurrences = false) const;
+    [[nodiscard]] String replace(StringView needle, StringView replacement, ReplaceMode) const;
 #endif
     [[nodiscard]] size_t count(StringView needle) const
     {

AK/URLParser.cpp

@@ -245,7 +245,7 @@ URL URLParser::parse(StringView raw_input, URL const* base_url, Optional<URL> ur
     // NOTE: This replaces all tab and newline characters with nothing.
     if (processed_input.contains("\t") || processed_input.contains("\n")) {
         report_validation_error();
-        processed_input = processed_input.replace("\t", "", true).replace("\n", "", true);
+        processed_input = processed_input.replace("\t", "", ReplaceMode::All).replace("\n", "", ReplaceMode::All);
     }
 
     State state = state_override.value_or(State::SchemeStart);

Meta/Lagom/Tools/CodeGenerators/LibTimeZone/GenerateTimeZoneData.cpp

@@ -211,7 +211,7 @@ static void parse_dst_rule(StringView segment, TimeZoneOffset& time_zone)
 
 static void parse_format(StringView format, TimeZoneData& time_zone_data, TimeZoneOffset& time_zone)
 {
-    auto formats = format.replace("%s"sv, "{}"sv).split('/');
+    auto formats = format.replace("%s"sv, "{}"sv, ReplaceMode::FirstOnly).split('/');
     VERIFY(formats.size() <= 2);
 
     time_zone.standard_format = time_zone_data.unique_strings.ensure(formats[0]);
@@ -422,8 +422,8 @@ static String format_identifier(StringView owner, String identifier)
         }
     }
 
-    identifier = identifier.replace("-"sv, "_"sv, true);
-    identifier = identifier.replace("/"sv, "_"sv, true);
+    identifier = identifier.replace("-"sv, "_"sv, ReplaceMode::All);
+    identifier = identifier.replace("/"sv, "_"sv, ReplaceMode::All);
 
     if (all_of(identifier, is_ascii_digit))
         return String::formatted("{}_{}", owner[0], identifier);
@@ -690,7 +690,7 @@ Optional<Array<NamedOffset, 2>> get_named_time_zone_offsets(TimeZone time_zone,
 
     auto format_name = [](auto format, auto offset) -> String {
         if (offset == 0)
-            return s_string_list[format].replace("{}"sv, ""sv);
+            return s_string_list[format].replace("{}"sv, ""sv, ReplaceMode::FirstOnly);
         return String::formatted(s_string_list[format], s_string_list[offset]);
     };
 

Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeData.cpp

@@ -146,8 +146,8 @@ struct UnicodeData {
 
 static String sanitize_entry(String const& entry)
 {
-    auto sanitized = entry.replace("-", "_", true);
-    sanitized = sanitized.replace(" ", "_", true);
+    auto sanitized = entry.replace("-", "_", ReplaceMode::All);
+    sanitized = sanitized.replace(" ", "_", ReplaceMode::All);
 
     StringBuilder builder;
     bool next_is_upper = true;
@@ -229,7 +229,7 @@ static ErrorOr<void> parse_special_casing(Core::Stream::BufferedFile& file, Unic
 
             if (!casing.locale.is_empty())
                 casing.locale = String::formatted("{:c}{}", to_ascii_uppercase(casing.locale[0]), casing.locale.substring_view(1));
-            casing.condition = casing.condition.replace("_", "", true);
+            casing.condition = casing.condition.replace("_", "", ReplaceMode::All);
 
             if (!casing.condition.is_empty() && !unicode_data.conditions.contains_slow(casing.condition))
                 unicode_data.conditions.append(casing.condition);

Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeDateTimeFormat.cpp

@@ -1088,14 +1088,14 @@ static void generate_missing_patterns(Calendar& calendar, CalendarPatternList& f
         auto time_pattern = locale_data.unique_strings.get(time_format);
         auto date_pattern = locale_data.unique_strings.get(date_format);
 
-        auto new_pattern = pattern.replace("{0}", time_pattern).replace("{1}", date_pattern);
+        auto new_pattern = pattern.replace("{0}", time_pattern, ReplaceMode::FirstOnly).replace("{1}", date_pattern, ReplaceMode::FirstOnly);
         return locale_data.unique_strings.ensure(move(new_pattern));
     };
 
     auto inject_fractional_second_digits = [&](auto format) {
         auto pattern = locale_data.unique_strings.get(format);
 
-        auto new_pattern = pattern.replace("{second}"sv, "{second}{decimal}{fractionalSecondDigits}"sv);
+        auto new_pattern = pattern.replace("{second}"sv, "{second}{decimal}{fractionalSecondDigits}"sv, ReplaceMode::FirstOnly);
         return locale_data.unique_strings.ensure(move(new_pattern));
     };
 
@@ -1606,8 +1606,8 @@ static ErrorOr<void> parse_all_locales(String core_path, String dates_path, Unic
 
 static String format_identifier(StringView owner, String identifier)
 {
-    identifier = identifier.replace("-"sv, "_"sv, true);
-    identifier = identifier.replace("/"sv, "_"sv, true);
+    identifier = identifier.replace("-"sv, "_"sv, ReplaceMode::All);
+    identifier = identifier.replace("/"sv, "_"sv, ReplaceMode::All);
 
     if (all_of(identifier, is_ascii_digit))
         return String::formatted("{}_{}", owner[0], identifier);

Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeLocale.cpp

@@ -57,7 +57,7 @@ constexpr auto s_list_pattern_list_index_type = "u8"sv;
 
 static String format_identifier(StringView owner, String identifier)
 {
-    identifier = identifier.replace("-"sv, "_"sv, true);
+    identifier = identifier.replace("-"sv, "_"sv, ReplaceMode::All);
 
     if (all_of(identifier, is_ascii_digit))
         return String::formatted("{}_{}", owner[0], identifier);

Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeNumberFormat.cpp

@@ -340,7 +340,7 @@ static String parse_identifiers(String pattern, StringView replacement, UnicodeL
         utf8_pattern = utf8_pattern.substring_view(*start_index, *end_index - *start_index);
         utf8_pattern = utf8_pattern.trim(whitespace);
 
-        auto identifier = utf8_pattern.as_string().replace("'.'"sv, "."sv);
+        auto identifier = utf8_pattern.as_string().replace("'.'"sv, "."sv, ReplaceMode::FirstOnly);
         auto identifier_index = locale_data.unique_strings.ensure(move(identifier));
         size_t replacement_index = 0;
 
@@ -379,7 +379,7 @@ static void parse_number_pattern(Vector<String> patterns, UnicodeLocaleData& loc
         };
 
         for (auto const& replacement : replacements)
-            pattern = pattern.replace(replacement.key, replacement.value, true);
+            pattern = pattern.replace(replacement.key, replacement.value, ReplaceMode::All);
 
         if (auto start_number_index = pattern.find_any_of("#0"sv, String::SearchDirection::Forward); start_number_index.has_value()) {
             auto end_number_index = *start_number_index + 1;
@@ -415,7 +415,7 @@ static void parse_number_pattern(Vector<String> patterns, UnicodeLocaleData& loc
             // This is specifically handled here rather than in the replacements HashMap above so
             // that we do not errantly replace zeroes in number patterns.
             if (pattern.contains(*replacements.get("E"sv)))
-                pattern = pattern.replace("0"sv, "{scientificExponent}"sv);
+                pattern = pattern.replace("0"sv, "{scientificExponent}"sv, ReplaceMode::FirstOnly);
         }
 
         if (type == NumberFormatType::Compact)
@@ -677,11 +677,11 @@ static ErrorOr<void> parse_units(String locale_units_path, UnicodeLocaleData& lo
                 auto plurality = unit_key.substring_view(unit_pattern_prefix.length());
                 format.plurality = NumberFormat::plurality_from_string(plurality);
 
-                auto zero_format = pattern_value.as_string().replace("{0}"sv, "{number}"sv);
+                auto zero_format = pattern_value.as_string().replace("{0}"sv, "{number}"sv, ReplaceMode::FirstOnly);
                 zero_format = parse_identifiers(zero_format, "unitIdentifier"sv, locale_data, format);
 
-                format.positive_format_index = locale_data.unique_strings.ensure(zero_format.replace("{number}"sv, "{plusSign}{number}"sv));
-                format.negative_format_index = locale_data.unique_strings.ensure(zero_format.replace("{number}"sv, "{minusSign}{number}"sv));
+                format.positive_format_index = locale_data.unique_strings.ensure(zero_format.replace("{number}"sv, "{plusSign}{number}"sv, ReplaceMode::FirstOnly));
+                format.negative_format_index = locale_data.unique_strings.ensure(zero_format.replace("{number}"sv, "{minusSign}{number}"sv, ReplaceMode::FirstOnly));
                 format.zero_format_index = locale_data.unique_strings.ensure(move(zero_format));
 
                 formats.append(locale_data.unique_formats.ensure(move(format)));

Meta/Lagom/Tools/CodeGenerators/LibUnicode/GeneratorUtil.h

@@ -464,7 +464,7 @@ void generate_mapping(SourceGenerator& generator, LocalesType const& locales, St
         String mapping_name;
 
         if constexpr (IsNullPointer<IdentifierFormatter>)
-            mapping_name = name.replace("-"sv, "_"sv, true);
+            mapping_name = name.replace("-"sv, "_"sv, ReplaceMode::All);
         else
             mapping_name = format_identifier(type, name);
 

Meta/Lagom/Tools/CodeGenerators/LibWeb/GeneratorUtil.h

@@ -51,7 +51,7 @@ String camel_casify(StringView dashy_name)
 
 String snake_casify(String const& dashy_name)
 {
-    return dashy_name.replace("-", "_", true);
+    return dashy_name.replace("-", "_", ReplaceMode::All);
 }
 
 ErrorOr<JsonValue> read_entire_file_as_json(StringView filename)

Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLGenerators.cpp

@@ -153,7 +153,7 @@ static String make_input_acceptable_cpp(String const& input)
         return builder.to_string();
     }
 
-    return input.replace("-", "_");
+    return input.replace("-", "_", ReplaceMode::FirstOnly);
 }
 
 static void generate_include_for_wrapper(auto& generator, auto& wrapper_name)
@@ -237,7 +237,7 @@ static void emit_includes_for_all_imports(auto& interface, auto& generator, bool
 
         if (is_iterator) {
             auto iterator_name = String::formatted("{}Iterator", interface->name);
-            auto iterator_path = String::formatted("{}Iterator", interface->fully_qualified_name.replace("::", "/"));
+            auto iterator_path = String::formatted("{}Iterator", interface->fully_qualified_name.replace("::", "/", ReplaceMode::FirstOnly));
             generate_include_for_iterator(generator, iterator_path, iterator_name);
         }
 
@@ -3635,7 +3635,7 @@ void generate_iterator_prototype_implementation(IDL::Interface const& interface)
     generator.set("prototype_class", String::formatted("{}IteratorPrototype", interface.name));
     generator.set("wrapper_class", String::formatted("{}IteratorWrapper", interface.name));
     generator.set("fully_qualified_name", String::formatted("{}Iterator", interface.fully_qualified_name));
-    generator.set("possible_include_path", String::formatted("{}Iterator", interface.name.replace("::", "/")));
+    generator.set("possible_include_path", String::formatted("{}Iterator", interface.name.replace("::", "/", ReplaceMode::FirstOnly)));
 
     generator.append(R"~~~(
 #include <AK/Function.h>

Tests/AK/TestString.cpp

@@ -166,20 +166,20 @@ TEST_CASE(replace)
 {
     String test_string = "Well, hello Friends!";
 
-    test_string = test_string.replace("Friends", "Testers");
+    test_string = test_string.replace("Friends", "Testers", ReplaceMode::FirstOnly);
     EXPECT(test_string == "Well, hello Testers!");
 
-    test_string = test_string.replace("ell", "e're", true);
+    test_string = test_string.replace("ell", "e're", ReplaceMode::All);
     EXPECT(test_string == "We're, he'reo Testers!");
 
-    test_string = test_string.replace("!", " :^)");
+    test_string = test_string.replace("!", " :^)", ReplaceMode::FirstOnly);
     EXPECT(test_string == "We're, he'reo Testers :^)");
 
     test_string = String("111._.111._.111");
-    test_string = test_string.replace("111", "|||", true);
+    test_string = test_string.replace("111", "|||", ReplaceMode::All);
     EXPECT(test_string == "|||._.|||._.|||");
 
-    test_string = test_string.replace("|||", "111");
+    test_string = test_string.replace("|||", "111", ReplaceMode::FirstOnly);
     EXPECT(test_string == "111._.|||._.|||");
 }
 

Userland/Applications/Browser/Tab.cpp

@@ -43,7 +43,7 @@ namespace Browser {
 URL url_from_user_input(String const& input)
 {
     if (input.starts_with("?") && !g_search_engine.is_empty())
-        return URL(g_search_engine.replace("{}", URL::percent_encode(input.substring_view(1))));
+        return URL(g_search_engine.replace("{}", URL::percent_encode(input.substring_view(1)), ReplaceMode::FirstOnly));
 
     URL url_with_http_schema = URL(String::formatted("http://{}", input));
     if (url_with_http_schema.is_valid() && url_with_http_schema.port().has_value())

Userland/Applications/HexEditor/FindDialog.cpp

@@ -79,7 +79,7 @@ Result<ByteBuffer, String> FindDialog::process_input(String text_value, OptionId
     }
 
     case OPTION_HEX_VALUE: {
-        auto decoded = decode_hex(text_value.replace(" ", "", true));
+        auto decoded = decode_hex(text_value.replace(" ", "", ReplaceMode::All));
         if (decoded.is_error())
             return String::formatted("Input is invalid: {}", decoded.error().string_literal());
 

Userland/Applications/HexEditor/GoToOffsetDialog.cpp

@@ -128,7 +128,7 @@ GoToOffsetDialog::GoToOffsetDialog()
         auto text = m_text_editor->text();
         if (text.starts_with("0x")) {
             m_offset_type_box->set_selected_index(1);
-            m_text_editor->set_text(text.replace("0x", ""));
+            m_text_editor->set_text(text.replace("0x", "", ReplaceMode::FirstOnly));
         }
         update_statusbar();
     };

Userland/Applications/KeyboardSettings/KeyboardSettingsWidget.cpp

@@ -68,7 +68,7 @@ private:
 
         while (iterator.has_next()) {
             auto name = iterator.next_path();
-            auto basename = name.replace(".json", "");
+            auto basename = name.replace(".json", "", ReplaceMode::FirstOnly);
             if (!selected_keymaps.find(basename).is_end())
                 continue;
             m_character_map_files.append(basename);

Userland/Applications/Terminal/main.cpp

@@ -189,7 +189,7 @@ static ErrorOr<NonnullRefPtr<GUI::Window>> create_find_window(VT::TerminalWidget
     find_textbox->set_fixed_width(230);
     find_textbox->set_focus(true);
     if (terminal.has_selection())
-        find_textbox->set_text(terminal.selected_text().replace("\n", " ", true));
+        find_textbox->set_text(terminal.selected_text().replace("\n", " ", ReplaceMode::All));
     auto find_backwards = TRY(find->try_add<GUI::Button>());
     find_backwards->set_fixed_width(25);
     find_backwards->set_icon(Gfx::Bitmap::try_load_from_file("/res/icons/16x16/upward-triangle.png").release_value_but_fixme_should_propagate_errors());

Userland/Applications/TerminalSettings/TerminalSettingsWidget.cpp

@@ -124,7 +124,7 @@ TerminalSettingsViewWidget::TerminalSettingsViewWidget()
     Core::DirIterator iterator("/res/terminal-colors", Core::DirIterator::SkipParentAndBaseDir);
     while (iterator.has_next()) {
         auto path = iterator.next_path();
-        color_scheme_names.append(path.replace(".ini", ""));
+        color_scheme_names.append(path.replace(".ini", "", ReplaceMode::FirstOnly));
     }
     quick_sort(color_scheme_names);
     auto& color_scheme_combo = *find_descendant_of_type_named<GUI::ComboBox>("color_scheme_combo");

Userland/DevTools/HackStudio/ProjectTemplate.cpp

@@ -94,7 +94,7 @@ Result<void, String> ProjectTemplate::create_project(String const& name, String
         dbgln("Running post-create script '{}'", postcreate_script_path);
 
         // Generate a namespace-safe project name (replace hyphens with underscores)
-        auto namespace_safe = name.replace("-", "_", true);
+        auto namespace_safe = name.replace("-", "_", ReplaceMode::All);
 
         pid_t child_pid;
         char const* argv[] = { postcreate_script_path.characters(), name.characters(), path.characters(), namespace_safe.characters(), nullptr };

Userland/DevTools/Profiler/SourceModel.cpp

@@ -27,7 +27,7 @@ public:
 public:
     SourceFile(StringView filename)
     {
-        String source_file_name = filename.replace("../../", source_root_path);
+        String source_file_name = filename.replace("../../", source_root_path, ReplaceMode::FirstOnly);
 
         auto maybe_file = Core::File::open(source_file_name, Core::OpenMode::ReadOnly);
         if (maybe_file.is_error()) {

Userland/Libraries/LibC/netdb.cpp

@@ -451,7 +451,7 @@ void endservent()
 static bool fill_getserv_buffers(char const* line, ssize_t read)
 {
     // Splitting the line by tab delimiter and filling the servent buffers name, port, and protocol members.
-    auto split_line = StringView(line, read).replace(" ", "\t", true).split('\t');
+    auto split_line = StringView(line, read).replace(" ", "\t", ReplaceMode::All).split('\t');
 
     // This indicates an incorrect file format.
     // Services file entries should always at least contain
@@ -474,7 +474,7 @@ static bool fill_getserv_buffers(char const* line, ssize_t read)
     __getserv_port_buffer = number.value();
 
     // Remove any annoying whitespace at the end of the protocol.
-    __getserv_protocol_buffer = port_protocol_split[1].replace(" ", "", true).replace("\t", "", true).replace("\n", "", true);
+    __getserv_protocol_buffer = port_protocol_split[1].replace(" ", "", ReplaceMode::All).replace("\t", "", ReplaceMode::All).replace("\n", "", ReplaceMode::All);
     __getserv_alias_list_buffer.clear();
 
     // If there are aliases for the service, we will fill the alias list buffer.
@@ -630,7 +630,7 @@ void endprotoent()
 static bool fill_getproto_buffers(char const* line, ssize_t read)
 {
     String string_line = String(line, read);
-    auto split_line = string_line.replace(" ", "\t", true).split('\t');
+    auto split_line = string_line.replace(" ", "\t", ReplaceMode::All).split('\t');
 
     // This indicates an incorrect file format. Protocols file entries should
     // always have at least a name and a protocol.

Userland/Libraries/LibC/termcap.cpp

@@ -114,7 +114,7 @@ int __attribute__((weak)) tgetnum(char const* id)
 static Vector<char> s_tgoto_buffer;
 char* __attribute__((weak)) tgoto([[maybe_unused]] char const* cap, [[maybe_unused]] int col, [[maybe_unused]] int row)
 {
-    auto cap_str = StringView(cap).replace("%p1%d", String::number(col)).replace("%p2%d", String::number(row));
+    auto cap_str = StringView(cap).replace("%p1%d", String::number(col), ReplaceMode::FirstOnly).replace("%p2%d", String::number(row), ReplaceMode::FirstOnly);
 
     s_tgoto_buffer.clear_with_capacity();
     s_tgoto_buffer.ensure_capacity(cap_str.length());

Userland/Libraries/LibELF/DynamicLinker.cpp

@@ -126,7 +126,7 @@ static Optional<String> resolve_library(String const& name, DynamicObject const&
     search_paths.append("/usr/local/lib"sv);
 
     for (auto const& search_path : search_paths) {
-        LexicalPath library_path(search_path.replace("$ORIGIN"sv, LexicalPath::dirname(parent_object.filepath())));
+        LexicalPath library_path(search_path.replace("$ORIGIN"sv, LexicalPath::dirname(parent_object.filepath()), ReplaceMode::FirstOnly));
         String library_name = library_path.append(name).string();
 
         if (access(library_name.characters(), F_OK) == 0)

Userland/Libraries/LibIMAP/Objects.cpp

@@ -128,7 +128,7 @@ String serialize_astring(StringView string)
     // Try to quote
     auto can_be_quoted = !(string.contains('\n') || string.contains('\r'));
     if (can_be_quoted) {
-        auto escaped_str = string.replace("\\", "\\\\").replace("\"", "\\\"");
+        auto escaped_str = string.replace("\\", "\\\\", ReplaceMode::FirstOnly).replace("\"", "\\\"", ReplaceMode::FirstOnly);
         return String::formatted("\"{}\"", escaped_str);
     }
 

Userland/Libraries/LibJS/Parser.h

@@ -182,7 +182,7 @@ public:
                 return {};
             // We need to modify the source to match what the lexer considers one line - normalizing
             // line terminators to \n is easier than splitting using all different LT characters.
-            String source_string = source.replace("\r\n", "\n").replace("\r", "\n").replace(LINE_SEPARATOR_STRING, "\n").replace(PARAGRAPH_SEPARATOR_STRING, "\n");
+            String source_string = source.replace("\r\n", "\n", ReplaceMode::FirstOnly).replace("\r", "\n", ReplaceMode::FirstOnly).replace(LINE_SEPARATOR_STRING, "\n", ReplaceMode::FirstOnly).replace(PARAGRAPH_SEPARATOR_STRING, "\n", ReplaceMode::FirstOnly);
             StringBuilder builder;
             builder.append(source_string.split_view('\n', true)[position.value().line - 1]);
             builder.append('\n');

Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormat.cpp

@@ -217,7 +217,7 @@ Optional<Unicode::CalendarPattern> date_time_style_format(StringView data_locale
             return {};
 
         // e. Let pattern be the string connector with the substring "{0}" replaced with timeFormat.[[pattern]] and the substring "{1}" replaced with dateFormat.[[pattern]].
-        auto pattern = connector->pattern.replace("{0}"sv, time_format.pattern).replace("{1}"sv, date_format.pattern);
+        auto pattern = connector->pattern.replace("{0}"sv, time_format.pattern, ReplaceMode::FirstOnly).replace("{1}"sv, date_format.pattern, ReplaceMode::FirstOnly);
 
         // f. Set format.[[pattern]] to pattern.
         format.pattern = move(pattern);
@@ -225,7 +225,7 @@ Optional<Unicode::CalendarPattern> date_time_style_format(StringView data_locale
         // g. If timeFormat has a [[pattern12]] field, then
         if (time_format.pattern12.has_value()) {
             // i. Let pattern12 be the string connector with the substring "{0}" replaced with timeFormat.[[pattern12]] and the substring "{1}" replaced with dateFormat.[[pattern]].
-            auto pattern12 = connector->pattern.replace("{0}"sv, *time_format.pattern12).replace("{1}"sv, date_format.pattern);
+            auto pattern12 = connector->pattern.replace("{0}"sv, *time_format.pattern12, ReplaceMode::FirstOnly).replace("{1}"sv, date_format.pattern, ReplaceMode::FirstOnly);
 
             // ii. Set format.[[pattern12]] to pattern12.
             format.pattern12 = move(pattern12);
@@ -1075,11 +1075,11 @@ ThrowCompletionOr<Vector<PatternPartitionWithSource>> partition_date_time_range_
         auto const& pattern = date_time_format.pattern();
 
         if (range_pattern->start_range.contains("{0}"sv)) {
-            range_pattern->start_range = range_pattern->start_range.replace("{0}"sv, pattern);
-            range_pattern->end_range = range_pattern->end_range.replace("{1}"sv, pattern);
+            range_pattern->start_range = range_pattern->start_range.replace("{0}"sv, pattern, ReplaceMode::FirstOnly);
+            range_pattern->end_range = range_pattern->end_range.replace("{1}"sv, pattern, ReplaceMode::FirstOnly);
         } else {
-            range_pattern->start_range = range_pattern->start_range.replace("{1}"sv, pattern);
-            range_pattern->end_range = range_pattern->end_range.replace("{0}"sv, pattern);
+            range_pattern->start_range = range_pattern->start_range.replace("{1}"sv, pattern, ReplaceMode::FirstOnly);
+            range_pattern->end_range = range_pattern->end_range.replace("{0}"sv, pattern, ReplaceMode::FirstOnly);
         }
 
         // FIXME: The above is not sufficient. For example, if the start date is days before the end date, and only the timeStyle

Userland/Libraries/LibJS/Runtime/Intl/DurationFormat.cpp

@@ -299,10 +299,10 @@ ThrowCompletionOr<DurationUnitOptions> get_duration_unit_options(GlobalObject& g
 //  here, but at some point we should split the the NumberFormat exporter to export both formats of the data.
 static String convert_number_format_pattern_to_duration_format_template(Unicode::NumberFormat const& number_format)
 {
-    auto result = number_format.zero_format.replace("{number}", "{0}");
+    auto result = number_format.zero_format.replace("{number}", "{0}", ReplaceMode::FirstOnly);
 
     for (size_t i = 0; i < number_format.identifiers.size(); ++i)
-        result = result.replace(String::formatted("{{unitIdentifier:{}}}", i), number_format.identifiers[i]);
+        result = result.replace(String::formatted("{{unitIdentifier:{}}}", i), number_format.identifiers[i], ReplaceMode::FirstOnly);
 
     return result;
 }

Userland/Libraries/LibJS/Runtime/RegExpObject.cpp

@@ -182,7 +182,7 @@ String RegExpObject::escape_regexp_pattern() const
     if (m_pattern.is_empty())
         return "(?:)";
     // FIXME: Check u flag and escape accordingly
-    return m_pattern.replace("\n", "\\n", true).replace("\r", "\\r", true).replace(LINE_SEPARATOR_STRING, "\\u2028", true).replace(PARAGRAPH_SEPARATOR_STRING, "\\u2029", true).replace("/", "\\/", true);
+    return m_pattern.replace("\n", "\\n", ReplaceMode::All).replace("\r", "\\r", ReplaceMode::All).replace(LINE_SEPARATOR_STRING, "\\u2028", ReplaceMode::All).replace(PARAGRAPH_SEPARATOR_STRING, "\\u2029", ReplaceMode::All).replace("/", "\\/", ReplaceMode::All);
 }
 
 // 22.2.3.2.4 RegExpCreate ( P, F ), https://tc39.es/ecma262/#sec-regexpcreate

Userland/Libraries/LibJS/Runtime/StringPrototype.cpp

@@ -970,7 +970,7 @@ static ThrowCompletionOr<Value> create_html(GlobalObject& global_object, Value s
         builder.append(' ');
         builder.append(attribute);
         builder.append("=\"");
-        builder.append(value_string.replace("\"", "&quot;", true));
+        builder.append(value_string.replace("\"", "&quot;", ReplaceMode::All));
         builder.append('"');
     }
     builder.append('>');

Userland/Libraries/LibJS/Token.cpp

@@ -213,7 +213,7 @@ String Token::string_value(StringValueStatus& status) const
 // 12.8.6.2 Static Semantics: TRV, https://tc39.es/ecma262/#sec-static-semantics-trv
 String Token::raw_template_value() const
 {
-    return value().replace("\r\n", "\n", true).replace("\r", "\n", true);
+    return value().replace("\r\n", "\n", ReplaceMode::All).replace("\r", "\n", ReplaceMode::All);
 }
 
 bool Token::bool_value() const

Userland/Libraries/LibUnicode/DateTimeFormat.cpp

@@ -246,7 +246,7 @@ static Optional<String> format_time_zone_offset(StringView locale, CalendarPatte
 
     // The digits used for hours, minutes and seconds fields in this format are the locale's default decimal digits.
     auto result = replace_digits_for_number_system(*number_system, builder.build());
-    return formats->gmt_format.replace("{0}"sv, result);
+    return formats->gmt_format.replace("{0}"sv, result, ReplaceMode::FirstOnly);
 }
 
 // https://unicode.org/reports/tr35/tr35-dates.html#Time_Zone_Format_Terminology

Userland/Libraries/LibUnicode/Locale.cpp

@@ -816,7 +816,7 @@ Optional<String> format_locale_for_display(StringView locale, LocaleID locale_id
     Optional<String> secondary_tag;
 
     if (script.has_value() && region.has_value())
-        secondary_tag = patterns->locale_separator.replace("{0}"sv, *script).replace("{1}"sv, *region);
+        secondary_tag = patterns->locale_separator.replace("{0}"sv, *script, ReplaceMode::FirstOnly).replace("{1}"sv, *region, ReplaceMode::FirstOnly);
     else if (script.has_value())
         secondary_tag = *script;
     else if (region.has_value())
@@ -825,7 +825,7 @@ Optional<String> format_locale_for_display(StringView locale, LocaleID locale_id
     if (!secondary_tag.has_value())
         return primary_tag;
 
-    return patterns->locale_pattern.replace("{0}"sv, primary_tag).replace("{1}"sv, *secondary_tag);
+    return patterns->locale_pattern.replace("{0}"sv, primary_tag, ReplaceMode::FirstOnly).replace("{1}"sv, *secondary_tag, ReplaceMode::FirstOnly);
 }
 
 Optional<ListPatterns> __attribute__((weak)) get_locale_list_patterns(StringView, StringView, Style) { return {}; }

Userland/Libraries/LibUnicode/NumberFormat.cpp

@@ -105,7 +105,7 @@ Optional<String> augment_currency_format_pattern([[maybe_unused]] StringView cur
     }
 
     if (currency_key_with_spacing.has_value())
-        return base_pattern.replace(currency_key, *currency_key_with_spacing);
+        return base_pattern.replace(currency_key, *currency_key_with_spacing, ReplaceMode::FirstOnly);
 #endif
 
     return {};

Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp

@@ -2883,7 +2883,7 @@ Optional<UnicodeRange> Parser::parse_unicode_range(StringView text)
         // 2. Interpret the consumed code points as a hexadecimal number,
         //    with the U+003F QUESTION MARK (?) code points replaced by U+0030 DIGIT ZERO (0) code points.
         //    This is the start value.
-        auto start_value_string = start_value_code_points.replace("?", "0", true);
+        auto start_value_string = start_value_code_points.replace("?", "0", ReplaceMode::All);
         auto maybe_start_value = AK::StringUtils::convert_to_uint_from_hex<u32>(start_value_string);
         if (!maybe_start_value.has_value()) {
             dbgln_if(CSS_PARSER_DEBUG, "CSSParser: <urange> ?-converted start value did not parse as hex number.");
@@ -2894,7 +2894,7 @@ Optional<UnicodeRange> Parser::parse_unicode_range(StringView text)
         // 3. Interpret the consumed code points as a hexadecimal number again,
         //    with the U+003F QUESTION MARK (?) code points replaced by U+0046 LATIN CAPITAL LETTER F (F) code points.
         //    This is the end value.
-        auto end_value_string = start_value_code_points.replace("?", "F", true);
+        auto end_value_string = start_value_code_points.replace("?", "F", ReplaceMode::All);
         auto maybe_end_value = AK::StringUtils::convert_to_uint_from_hex<u32>(end_value_string);
         if (!maybe_end_value.has_value()) {
             dbgln_if(CSS_PARSER_DEBUG, "CSSParser: <urange> ?-converted end value did not parse as hex number.");

Userland/Libraries/LibWeb/DOMParsing/XMLSerializer.cpp

@@ -276,16 +276,16 @@ static DOM::ExceptionOr<String> serialize_an_attribute_value(String const& attri
     auto final_attribute_value = attribute_value;
 
     // 1. "&" with "&amp;"
-    final_attribute_value = final_attribute_value.replace("&"sv, "&amp;"sv, true);
+    final_attribute_value = final_attribute_value.replace("&"sv, "&amp;"sv, ReplaceMode::All);
 
     // 2. """ with "&quot;"
-    final_attribute_value = final_attribute_value.replace("\""sv, "&quot;"sv, true);
+    final_attribute_value = final_attribute_value.replace("\""sv, "&quot;"sv, ReplaceMode::All);
 
     // 3. "<" with "&lt;"
-    final_attribute_value = final_attribute_value.replace("<"sv, "&lt;"sv, true);
+    final_attribute_value = final_attribute_value.replace("<"sv, "&lt;"sv, ReplaceMode::All);
 
     // 4. ">" with "&gt;"
-    final_attribute_value = final_attribute_value.replace(">"sv, "&gt;"sv, true);
+    final_attribute_value = final_attribute_value.replace(">"sv, "&gt;"sv, ReplaceMode::All);
 
     return final_attribute_value;
 }
@@ -736,13 +736,13 @@ static DOM::ExceptionOr<String> serialize_text(DOM::Text const& text, [[maybe_un
     String markup = text.data();
 
     // 3. Replace any occurrences of "&" in markup by "&amp;".
-    markup = markup.replace("&"sv, "&amp;"sv, true);
+    markup = markup.replace("&"sv, "&amp;"sv, ReplaceMode::All);
 
     // 4. Replace any occurrences of "<" in markup by "&lt;".
-    markup = markup.replace("<"sv, "&lt;"sv, true);
+    markup = markup.replace("<"sv, "&lt;"sv, ReplaceMode::All);
 
     // 5. Replace any occurrences of ">" in markup by "&gt;".
-    markup = markup.replace(">"sv, "&gt;"sv, true);
+    markup = markup.replace(">"sv, "&gt;"sv, ReplaceMode::All);
 
     // 6. Return the value of markup.
     return markup;

Userland/Libraries/LibWeb/URL/URLSearchParams.cpp

@@ -54,7 +54,7 @@ Vector<QueryParam> url_decode(StringView input)
         }
 
         // 4. Replace any 0x2B (+) in name and value with 0x20 (SP).
-        auto space_decoded_name = name.replace("+"sv, " "sv, true);
+        auto space_decoded_name = name.replace("+"sv, " "sv, ReplaceMode::All);
 
         // 5. Let nameString and valueString be the result of running UTF-8 decode without BOM on the percent-decoding of name and value, respectively.
         auto name_string = AK::URL::percent_decode(space_decoded_name);

Userland/Libraries/LibXML/Parser/Parser.h

@@ -150,7 +150,7 @@ private:
             [this, position = m_lexer.tell(), location] {
                 m_lexer.retreat(m_lexer.tell() - position);
                 (void)location;
-                dbgln_if(XML_PARSER_DEBUG, "{:->{}}FAIL @ {} -- \x1b[31m{}\x1b[0m", " ", s_debug_indent_level * 2, location, m_lexer.remaining().substring_view(0, min(16, m_lexer.tell_remaining())).replace("\n", "\\n", true));
+                dbgln_if(XML_PARSER_DEBUG, "{:->{}}FAIL @ {} -- \x1b[31m{}\x1b[0m", " ", s_debug_indent_level * 2, location, m_lexer.remaining().substring_view(0, min(16, m_lexer.tell_remaining())).replace("\n", "\\n", ReplaceMode::All));
             }
         };
     }

Userland/Services/LookupServer/LookupServer.cpp

@@ -95,7 +95,7 @@ void LookupServer::load_etc_hosts()
         if (original_line.is_empty())
             break;
         auto trimmed_line = original_line.view().trim_whitespace();
-        auto replaced_line = trimmed_line.replace(" ", "\t", true);
+        auto replaced_line = trimmed_line.replace(" ", "\t", ReplaceMode::All);
         auto fields = replaced_line.split_view('\t', false);
 
         if (fields.size() < 2) {

Userland/Services/Taskbar/QuickLaunchWidget.cpp

@@ -137,7 +137,7 @@ OwnPtr<QuickLaunchEntry> QuickLaunchEntry::create_from_path(StringView path)
 
 static String sanitize_entry_name(String const& name)
 {
-    return name.replace(" ", "", true).replace("=", "", true);
+    return name.replace(" ", "", ReplaceMode::All).replace("=", "", ReplaceMode::All);
 }
 
 void QuickLaunchWidget::add_or_adjust_button(String const& button_name, NonnullOwnPtr<QuickLaunchEntry>&& entry)

Userland/Services/WindowServer/Window.cpp

@@ -1183,7 +1183,7 @@ void Window::set_modified(bool modified)
 
 String Window::computed_title() const
 {
-    String title = m_title.replace("[*]", is_modified() ? " (*)" : "");
+    String title = m_title.replace("[*]", is_modified() ? " (*)" : "", ReplaceMode::FirstOnly);
     if (client() && client()->is_unresponsive())
         return String::formatted("{} (Not responding)", title);
     return title;

Userland/Utilities/man.cpp

@@ -105,7 +105,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     if (pager)
         pager_command = pager;
     else
-        pager_command = String::formatted("less -P 'Manual Page {}({}) line %l?e (END):.'", StringView(name).replace("'", "'\\''"), StringView(section).replace("'", "'\\''"));
+        pager_command = String::formatted("less -P 'Manual Page {}({}) line %l?e (END):.'", StringView(name).replace("'", "'\\''", ReplaceMode::FirstOnly), StringView(section).replace("'", "'\\''", ReplaceMode::FirstOnly));
     pid_t pager_pid = TRY(pipe_to_pager(pager_command));
 
     auto file = TRY(Core::File::open(filename, Core::OpenMode::ReadOnly));

Userland/Utilities/markdown-check.cpp

@@ -143,24 +143,24 @@ static String slugify(String const& text)
     String slug = text.to_lowercase();
     // Reverse-engineered through github, using:
     // find AK/ Base/ Documentation/ Kernel/ Meta/ Ports/ Tests/ Userland/ -name '*.md' | xargs grep --color=always -Pin '^##+ .*[^a-z0-9 ?()`_:/!&|.$'"'"',<>"+-]' README.md
-    slug = slug.replace(" ", "-", true)
-               .replace("!", "", true)
-               .replace("?", "", true)
-               .replace("(", "", true)
-               .replace(")", "", true)
-               .replace(":", "", true)
-               .replace("/", "-", true)
-               .replace("&", "", true)
-               .replace("|", "", true)
-               .replace(".", "", true)
-               .replace("$", "", true)
-               .replace("'", "", true)
-               .replace(",", "", true)
-               .replace("\"", "", true)
-               .replace("+", "", true)
-               .replace("\\", "", true)
-               .replace("<", "", true)
-               .replace(">", "", true);
+    slug = slug.replace(" ", "-", ReplaceMode::All)
+               .replace("!", "", ReplaceMode::All)
+               .replace("?", "", ReplaceMode::All)
+               .replace("(", "", ReplaceMode::All)
+               .replace(")", "", ReplaceMode::All)
+               .replace(":", "", ReplaceMode::All)
+               .replace("/", "-", ReplaceMode::All)
+               .replace("&", "", ReplaceMode::All)
+               .replace("|", "", ReplaceMode::All)
+               .replace(".", "", ReplaceMode::All)
+               .replace("$", "", ReplaceMode::All)
+               .replace("'", "", ReplaceMode::All)
+               .replace(",", "", ReplaceMode::All)
+               .replace("\"", "", ReplaceMode::All)
+               .replace("+", "", ReplaceMode::All)
+               .replace("\\", "", ReplaceMode::All)
+               .replace("<", "", ReplaceMode::All)
+               .replace(">", "", ReplaceMode::All);
     // What about "="?
     return slug;
 }

Userland/Utilities/unzip.cpp

@@ -122,7 +122,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         if (!file_filters.is_empty()) {
             for (auto& filter : file_filters) {
                 // Convert underscore wildcards (usual unzip convention) to question marks (as used by StringUtils)
-                auto string_filter = filter.replace("_", "?", true);
+                auto string_filter = filter.replace("_", "?", ReplaceMode::All);
                 if (zip_member.name.matches(string_filter, CaseSensitivity::CaseSensitive)) {
                     keep_file = true;
                     break;

Userland/Utilities/update-cpp-test-results.cpp

@@ -18,7 +18,7 @@ ErrorOr<int> serenity_main(Main::Arguments)
         auto cpp_full_path = parser_tests.next_full_path();
         if (!cpp_full_path.ends_with(".cpp"))
             continue;
-        auto ast_full_path = cpp_full_path.replace(".cpp", ".ast");
+        auto ast_full_path = cpp_full_path.replace(".cpp", ".ast", ReplaceMode::FirstOnly);
         outln("{}", cpp_full_path);
         auto res = Core::command("/bin/sh", { "-c", String::formatted("cpp-parser {} > {}", cpp_full_path, ast_full_path) }, {});
         VERIFY(!res.is_error());
@@ -29,7 +29,7 @@ ErrorOr<int> serenity_main(Main::Arguments)
         auto cpp_full_path = preprocessor_tests.next_full_path();
         if (!cpp_full_path.ends_with(".cpp"))
             continue;
-        auto ast_full_path = cpp_full_path.replace(".cpp", ".txt");
+        auto ast_full_path = cpp_full_path.replace(".cpp", ".txt", ReplaceMode::FirstOnly);
         outln("{}", cpp_full_path);
         auto res = Core::command("/bin/sh", { "-c", String::formatted("cpp-preprocessor {} > {}", cpp_full_path, ast_full_path) }, {});
         VERIFY(!res.is_error());