fix(search): make stop interrupt all phases

.gitea/workflows/ci-release.yaml

@@ -34,6 +34,10 @@ jobs:
         shell: bash
         run: cmake --build build --parallel
 
+      - name: Run tests
+        shell: bash
+        run: ctest --test-dir build --output-on-failure
+
       - name: Smoke test GUI
         shell: bash
         run: |

.gitignore

@@ -1 +1,7 @@
 /build/
+/cmake-build-*/
+/out/
+/.idea/
+/.vscode/
+/CMakeLists.txt.user
+/CMakeLists.txt.user.*

CHANGELOG.md

@@ -5,6 +5,23 @@ All notable changes to FolderScope are documented here.
 The project uses [Semantic Versioning](https://semver.org/). Release tags are
 formatted as `vMAJOR.MINOR.PATCH`.
 
+## [0.2.4] - 2026-07-25
+
+### Fixed
+
+- Corrected result-table context menu positioning.
+- Added validation for ISO date filters instead of silently accepting invalid
+  input.
+- Replaced the 2 GB size-filter limit with precise 64-bit inputs.
+- Preserved visible table order when acting on multiple selected files.
+- Made release preparation reject untracked files.
+
+### Added
+
+- Added automated tests for search primitives, large size inputs, and release
+  safeguards.
+- Added the test suite to the CI verification gate.
+
 ## [0.2.3] - 2026-07-25
 
 ### Added
@@ -48,3 +65,4 @@ formatted as `vMAJOR.MINOR.PATCH`.
 [0.2.1]: https://gitea.forust.xyz/forust/folderscope/releases/tag/v0.2.1
 [0.2.2]: https://gitea.forust.xyz/forust/folderscope/releases/tag/v0.2.2
 [0.2.3]: https://gitea.forust.xyz/forust/folderscope/releases/tag/v0.2.3
+[0.2.4]: https://gitea.forust.xyz/forust/folderscope/releases/tag/v0.2.4

CMakeLists.txt

@@ -14,14 +14,51 @@ set(CMAKE_AUTOMOC ON)
 
 find_package(Qt6 REQUIRED COMPONENTS Widgets Concurrent DBus)
 
+add_library(folderscope_core STATIC
+    src/search_core.cpp
+    src/search_core.h
+)
+target_link_libraries(folderscope_core PUBLIC Qt6::Core)
+target_compile_options(folderscope_core PRIVATE -Wall -Wextra -Wpedantic)
+target_include_directories(folderscope_core PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/src")
+
 qt_add_executable(searchmyfiles
+    src/long_long_spin_box.cpp
+    src/long_long_spin_box.h
     src/main.cpp
 )
 
-target_link_libraries(searchmyfiles PRIVATE Qt6::Widgets Qt6::Concurrent Qt6::DBus)
+target_link_libraries(searchmyfiles PRIVATE folderscope_core Qt6::Widgets Qt6::Concurrent Qt6::DBus)
 target_compile_options(searchmyfiles PRIVATE -Wall -Wextra -Wpedantic)
 target_compile_definitions(searchmyfiles PRIVATE FOLDERSCOPE_VERSION="${PROJECT_VERSION}")
 
 install(TARGETS searchmyfiles RUNTIME DESTINATION bin)
 install(FILES packaging/searchmyfiles.desktop
         DESTINATION share/applications)
+
+include(CTest)
+if (BUILD_TESTING)
+    find_package(Qt6 REQUIRED COMPONENTS Test)
+
+    qt_add_executable(search_core_tests
+        tests/search_core_test.cpp
+    )
+    target_link_libraries(search_core_tests PRIVATE folderscope_core Qt6::Test)
+    target_compile_options(search_core_tests PRIVATE -Wall -Wextra -Wpedantic)
+    add_test(NAME search-core COMMAND search_core_tests)
+
+    qt_add_executable(long_long_spin_box_tests
+        src/long_long_spin_box.cpp
+        src/long_long_spin_box.h
+        tests/long_long_spin_box_test.cpp
+    )
+    target_link_libraries(long_long_spin_box_tests PRIVATE Qt6::Widgets Qt6::Test)
+    target_compile_options(long_long_spin_box_tests PRIVATE -Wall -Wextra -Wpedantic)
+    target_include_directories(long_long_spin_box_tests PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/src")
+    add_test(NAME long-long-spin-box COMMAND long_long_spin_box_tests)
+    set_tests_properties(long-long-spin-box PROPERTIES ENVIRONMENT "QT_QPA_PLATFORM=offscreen")
+
+    add_test(NAME release-rejects-untracked
+             COMMAND bash "${CMAKE_CURRENT_SOURCE_DIR}/tests/release_dirty_test.sh"
+                     "${CMAKE_CURRENT_SOURCE_DIR}/scripts/release.sh")
+endif()

README.md

@@ -36,6 +36,12 @@ cmake --build build -j
 ./build/searchmyfiles
 ```
 
+Run the automated tests:
+
+```bash
+ctest --test-dir build --output-on-failure
+```
+
 Install into the current system:
 
 ```bash

VERSION

@@ -1 +1 @@
-0.2.3
+0.2.4

scripts/release.sh

@@ -9,7 +9,7 @@ fi
 version="$1"
 tag="v${version}"
 
-if ! git diff --quiet || ! git diff --cached --quiet; then
+if [[ -n "$(git status --porcelain)" ]]; then
   echo "Refusing to release with uncommitted changes." >&2
   exit 1
 fi

src/long_long_spin_box.cpp

@@ -0,0 +1,130 @@
+#include "long_long_spin_box.h"
+
+#include <QLineEdit>
+
+#include <algorithm>
+
+LongLongSpinBox::LongLongSpinBox(QWidget *parent) : QAbstractSpinBox(parent)
+{
+    setValue(0);
+    connect(this, &QAbstractSpinBox::editingFinished, this, &LongLongSpinBox::commitText);
+}
+
+qint64 LongLongSpinBox::value() const
+{
+    qint64 parsed = value_;
+    return valueFromText(lineEdit()->text(), parsed) ? parsed : value_;
+}
+
+void LongLongSpinBox::setValue(qint64 value)
+{
+    value_ = std::clamp(value, minimum_, maximum_);
+    lineEdit()->setText(textFromValue(value_));
+}
+
+void LongLongSpinBox::setRange(qint64 minimum, qint64 maximum)
+{
+    minimum_ = minimum;
+    maximum_ = std::max(minimum, maximum);
+    setValue(value_);
+}
+
+void LongLongSpinBox::setSingleStep(qint64 step)
+{
+    singleStep_ = std::max<qint64>(1, step);
+}
+
+void LongLongSpinBox::setSuffix(const QString &suffix)
+{
+    suffix_ = suffix;
+    setValue(value());
+}
+
+void LongLongSpinBox::setSpecialValueText(const QString &text)
+{
+    specialValueText_ = text;
+    setValue(value());
+}
+
+QValidator::State LongLongSpinBox::validate(QString &input, int &position) const
+{
+    Q_UNUSED(position);
+    if (!specialValueText_.isEmpty() && input == specialValueText_)
+        return QValidator::Acceptable;
+
+    QString number = input;
+    if (!suffix_.isEmpty() && number.endsWith(suffix_))
+        number.chop(suffix_.size());
+    number = number.trimmed();
+    if (number.isEmpty() || number == QStringLiteral("-"))
+        return QValidator::Intermediate;
+
+    qint64 parsed = 0;
+    if (!valueFromText(input, parsed))
+        return QValidator::Invalid;
+    return parsed >= minimum_ && parsed <= maximum_
+        ? QValidator::Acceptable : QValidator::Invalid;
+}
+
+void LongLongSpinBox::fixup(QString &input) const
+{
+    qint64 parsed = value_;
+    input = valueFromText(input, parsed)
+        ? textFromValue(std::clamp(parsed, minimum_, maximum_))
+        : textFromValue(value_);
+}
+
+void LongLongSpinBox::stepBy(int steps)
+{
+    commitText();
+    qint64 next = value_;
+    if (steps > 0) {
+        const qint64 count = steps;
+        next = singleStep_ > (maximum_ - value_) / count
+            ? maximum_ : value_ + singleStep_ * count;
+    } else if (steps < 0) {
+        const qint64 count = -qint64(steps);
+        next = singleStep_ > (value_ - minimum_) / count
+            ? minimum_ : value_ - singleStep_ * count;
+    }
+    setValue(next);
+}
+
+QAbstractSpinBox::StepEnabled LongLongSpinBox::stepEnabled() const
+{
+    StepEnabled enabled = StepNone;
+    const qint64 current = value();
+    if (current > minimum_)
+        enabled |= StepDownEnabled;
+    if (current < maximum_)
+        enabled |= StepUpEnabled;
+    return enabled;
+}
+
+QString LongLongSpinBox::textFromValue(qint64 value) const
+{
+    if (value == minimum_ && !specialValueText_.isEmpty())
+        return specialValueText_;
+    return QString::number(value) + suffix_;
+}
+
+bool LongLongSpinBox::valueFromText(const QString &text, qint64 &value) const
+{
+    if (!specialValueText_.isEmpty() && text == specialValueText_) {
+        value = minimum_;
+        return true;
+    }
+    QString number = text;
+    if (!suffix_.isEmpty() && number.endsWith(suffix_))
+        number.chop(suffix_.size());
+    bool ok = false;
+    const qint64 parsed = number.trimmed().toLongLong(&ok);
+    if (ok)
+        value = parsed;
+    return ok;
+}
+
+void LongLongSpinBox::commitText()
+{
+    setValue(value());
+}

src/long_long_spin_box.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <QAbstractSpinBox>
+#include <QValidator>
+
+#include <limits>
+
+class LongLongSpinBox final : public QAbstractSpinBox {
+public:
+    explicit LongLongSpinBox(QWidget *parent = nullptr);
+
+    qint64 value() const;
+    void setValue(qint64 value);
+    void setRange(qint64 minimum, qint64 maximum);
+    void setSingleStep(qint64 step);
+    void setSuffix(const QString &suffix);
+    void setSpecialValueText(const QString &text);
+
+protected:
+    QValidator::State validate(QString &input, int &position) const override;
+    void fixup(QString &input) const override;
+    void stepBy(int steps) override;
+    StepEnabled stepEnabled() const override;
+
+private:
+    QString textFromValue(qint64 value) const;
+    bool valueFromText(const QString &text, qint64 &value) const;
+    void commitText();
+
+    qint64 minimum_ = 0;
+    qint64 maximum_ = std::numeric_limits<qint64>::max();
+    qint64 value_ = 0;
+    qint64 singleStep_ = 1;
+    QString suffix_;
+    QString specialValueText_;
+};

src/main.cpp

@@ -55,13 +55,15 @@
 #include <QUrl>
 #include <QtConcurrent>
 
+#include "long_long_spin_box.h"
+#include "search_core.h"
+
 #include <algorithm>
 #include <atomic>
 #include <chrono>
 #include <filesystem>
 #include <functional>
 #include <optional>
-#include <pwd.h>
 #include <sys/stat.h>
 #include <unordered_map>
 #include <utility>
@@ -69,220 +71,6 @@
 
 namespace fs = std::filesystem;
 
-struct SearchOptions {
-    QString roots = QDir::homePath();
-    QString fileWildcards = QStringLiteral("*");
-    QString subfolderWildcards = QStringLiteral("*");
-    QString excludeFiles;
-    QString excludeFolders;
-    QString includeFolders;
-    QString contains;
-    bool binary = false;
-    bool multipleValues = false;
-    bool multipleAnd = false;
-    bool caseSensitive = false;
-    qint64 minSize = 0;
-    qint64 maxSize = 0;
-    qint64 minTime = 0;
-    qint64 maxTime = 0;
-    QString timeField = QStringLiteral("Modified time");
-    int lastMinutes = 0;
-    bool recursive = true;
-    bool findFiles = true;
-    bool findFolders = false;
-    bool followLinks = false;
-    bool retrieveOwner = false;
-    bool accurateProgress = true;
-    bool useCache = true;
-    int maxDepth = 0;
-    int maxResults = 0;
-    QString mode = QStringLiteral("Standard search");
-    QString duplicateNameMode = QStringLiteral("All files and folders");
-    bool duplicateNameWithoutExtension = false;
-    bool showOnlyDuplicateFiles = true;
-    bool includeSubfoldersInSummary = false;
-    QString hidden = QStringLiteral("Any");
-    QString readonly = QStringLiteral("Any");
-    QString executable = QStringLiteral("Any");
-};
-
-struct FileRecord {
-    QString path;
-    QString name;
-    QString folder;
-    qint64 size = 0;
-    qint64 sizeOnDisk = 0;
-    qint64 modified = 0;
-    qint64 created = 0;
-    qint64 accessed = 0;
-    qint64 changed = 0;
-    QString type;
-    QString owner;
-    QString attributes;
-    int group = 0;
-    int duplicateCopy = 0;
-};
-
-Q_DECLARE_METATYPE(SearchOptions)
-Q_DECLARE_METATYPE(FileRecord)
-Q_DECLARE_METATYPE(QVector<FileRecord>)
-
-static QStringList patterns(const QString &text)
-{
-    QStringList out;
-    QString item;
-    bool quoted = false;
-    for (QChar ch : text) {
-        if (ch == u'"') {
-            quoted = !quoted;
-        } else if (!quoted && (ch == u';' || ch == u',')) {
-            if (!item.trimmed().isEmpty())
-                out.push_back(item.trimmed());
-            item.clear();
-        } else {
-            item += ch;
-        }
-    }
-    if (!item.trimmed().isEmpty())
-        out.push_back(item.trimmed());
-    return out;
-}
-
-static QStringList exclusionPatterns(const QString &text)
-{
-    QString normalized = text;
-    normalized.replace(QRegularExpression(QStringLiteral("\\s+")), QStringLiteral(";"));
-    QStringList result = patterns(normalized);
-    for (QString &pattern : result) {
-        if (!pattern.contains(u'*') && !pattern.contains(u'?') && !pattern.contains(u'/'))
-            pattern = QStringLiteral("*.") + pattern.remove(QRegularExpression(QStringLiteral("^\\.")));
-    }
-    return result;
-}
-
-static bool wildcardMatch(const QString &value, const QStringList &items, Qt::CaseSensitivity cs)
-{
-    for (const QString &pattern : items) {
-        const auto regex = QRegularExpression(
-            QRegularExpression::wildcardToRegularExpression(pattern),
-            cs == Qt::CaseInsensitive ? QRegularExpression::CaseInsensitiveOption
-                                      : QRegularExpression::NoPatternOption);
-        if (regex.match(value).hasMatch())
-            return true;
-    }
-    return false;
-}
-
-static QString humanSize(qint64 bytes)
-{
-    static const QStringList units{QStringLiteral("B"), QStringLiteral("KB"),
-                                   QStringLiteral("MB"), QStringLiteral("GB"),
-                                   QStringLiteral("TB")};
-    double value = static_cast<double>(bytes);
-    int unit = 0;
-    while (value >= 1024.0 && unit < units.size() - 1) {
-        value /= 1024.0;
-        ++unit;
-    }
-    return unit == 0 ? QStringLiteral("%1 B").arg(bytes)
-                     : QStringLiteral("%1 %2").arg(value, 0, 'f', 2).arg(units[unit]);
-}
-
-static QString ownerName(uid_t uid)
-{
-    struct passwd pwd {};
-    struct passwd *result = nullptr;
-    QByteArray buffer(16384, Qt::Uninitialized);
-    if (getpwuid_r(uid, &pwd, buffer.data(), static_cast<size_t>(buffer.size()), &result) == 0 && result)
-        return QString::fromLocal8Bit(result->pw_name);
-    return QString::number(uid);
-}
-
-static std::optional<QByteArray> hexNeedle(QString text)
-{
-    text.remove(QRegularExpression(QStringLiteral("\\s+")));
-    if (text.size() % 2 != 0 || !QRegularExpression(QStringLiteral("^[0-9a-fA-F]*$")).match(text).hasMatch())
-        return std::nullopt;
-    return QByteArray::fromHex(text.toLatin1());
-}
-
-static bool fileContains(const QString &path, const SearchOptions &o)
-{
-    if (o.contains.isEmpty())
-        return true;
-
-    QStringList terms = o.multipleValues ? patterns(o.contains) : QStringList{o.contains};
-    QList<QByteArray> needles;
-    for (const QString &term : terms) {
-        if (o.binary) {
-            const auto bytes = hexNeedle(term);
-            if (!bytes)
-                return false;
-            needles.push_back(*bytes);
-        } else {
-            needles.push_back(term.toUtf8());
-        }
-    }
-    if (needles.isEmpty())
-        return true;
-
-    QFile file(path);
-    if (!file.open(QIODevice::ReadOnly))
-        return false;
-
-    QVector<bool> found(needles.size(), false);
-    qsizetype overlap = 1;
-    for (const QByteArray &needle : needles)
-        overlap = std::max(overlap, needle.size());
-    QByteArray tail;
-    while (!file.atEnd()) {
-        QByteArray data = tail + file.read(1024 * 1024);
-        if (!o.caseSensitive && !o.binary)
-            data = data.toLower();
-        for (qsizetype i = 0; i < needles.size(); ++i) {
-            QByteArray needle = needles[i];
-            if (!o.caseSensitive && !o.binary)
-                needle = needle.toLower();
-            if (!found[i] && data.contains(needle))
-                found[i] = true;
-        }
-        const bool matched = o.multipleAnd
-            ? std::all_of(found.cbegin(), found.cend(), [](bool x) { return x; })
-            : std::any_of(found.cbegin(), found.cend(), [](bool x) { return x; });
-        if (matched)
-            return true;
-        tail = data.right(overlap - 1);
-    }
-    return false;
-}
-
-static bool filesEqual(const QString &leftPath, const QString &rightPath)
-{
-    QFile left(leftPath);
-    QFile right(rightPath);
-    if (!left.open(QIODevice::ReadOnly) || !right.open(QIODevice::ReadOnly)
-        || left.size() != right.size())
-        return false;
-    while (!left.atEnd()) {
-        const QByteArray a = left.read(1024 * 1024);
-        const QByteArray b = right.read(a.size());
-        if (a != b)
-            return false;
-    }
-    return right.atEnd();
-}
-
-static QByteArray sha256(const QString &path)
-{
-    QFile file(path);
-    if (!file.open(QIODevice::ReadOnly))
-        return {};
-    QCryptographicHash hash(QCryptographicHash::Sha256);
-    while (!file.atEnd())
-        hash.addData(file.read(1024 * 1024));
-    return hash.result();
-}
-
 struct SearchCacheEntry {
     qint64 size = -1;
     qint64 modified = -1;
@@ -467,6 +255,12 @@ public slots:
     void search(const SearchOptions &o)
     {
         cancelled_.store(false, std::memory_order_relaxed);
+        const auto finishIfCancelled = [this] {
+            if (!cancelled_.load(std::memory_order_relaxed))
+                return false;
+            emit finished({}, tr("Search stopped"));
+            return true;
+        };
         cancelledByLimit_ = false;
         cache_.setEnabled(o.useCache);
         cacheHits_.store(0, std::memory_order_relaxed);
@@ -496,7 +290,8 @@ public slots:
                     dirOptions |= fs::directory_options::follow_directory_symlink;
                 if (!o.recursive) {
                     for (fs::directory_iterator it(root, dirOptions, ec), end;
-                         it != end && !ec; it.increment(ec)) {
+                         it != end && !ec && !cancelled_.load(std::memory_order_relaxed);
+                         it.increment(ec)) {
                         ++totalEntries;
                         if (totalEntries % 2048 == 0)
                             emit phaseProgress(tr("Counting files"), totalEntries, 0);
@@ -609,7 +404,9 @@ public slots:
 
             if (!o.recursive) {
                 for (fs::directory_iterator it(root, dirOptions, ec), end;
-                     it != end && !ec && !cancelledByLimit_; it.increment(ec)) {
+                     it != end && !ec && !cancelled_.load(std::memory_order_relaxed)
+                         && !cancelledByLimit_;
+                     it.increment(ec)) {
                     process(*it, root);
                     if (++scanned % 512 == 0) {
                         if (totalEntries)
@@ -650,10 +447,8 @@ public slots:
         if (totalEntries)
             emit phaseProgress(tr("Scanning files"), std::min(scanned, totalEntries), totalEntries);
 
-        if (cancelled_.load(std::memory_order_relaxed)) {
-            emit finished({}, tr("Search stopped"));
+        if (finishIfCancelled())
             return;
-        }
 
         if (!o.contains.isEmpty() && !o.findFolders) {
             emit phaseProgress(tr("Searching file contents"), 0, candidates.size());
@@ -661,6 +456,8 @@ public slots:
             const qsizetype total = candidates.size();
             QFuture<FileRecord> future = QtConcurrent::filtered(
                 candidates, [this, o, &checked, total](const FileRecord &r) {
+                    if (cancelled_.load(std::memory_order_relaxed))
+                        return false;
                     const bool matched = cachedFileContains(r, o);
                     const qsizetype done = checked.fetch_add(1, std::memory_order_relaxed) + 1;
                     if (done == total || done % 32 == 0)
@@ -668,6 +465,8 @@ public slots:
                     return matched;
                 });
             future.waitForFinished();
+            if (finishIfCancelled())
+                return;
             candidates = future.results();
             if (o.maxResults > 0 && candidates.size() > o.maxResults)
                 candidates.resize(o.maxResults);
@@ -692,6 +491,8 @@ public slots:
             int group = 1;
             QSet<QString> duplicatedPaths;
             for (auto &[size, sameSize] : bySize) {
+                if (cancelled_.load(std::memory_order_relaxed))
+                    break;
                 Q_UNUSED(size);
                 if (sameSize.size() < 2)
                     continue;
@@ -702,18 +503,24 @@ public slots:
                         emit phaseProgress(tr("Checking duplicates"), done, hashTotal);
                     return result;
                 });
+                if (cancelled_.load(std::memory_order_relaxed))
+                    break;
                 QHash<QByteArray, QVector<FileRecord>> sameHash;
                 for (auto &[hash, record] : hashes)
                     if (!hash.isEmpty())
                         sameHash[hash].push_back(record);
                 for (const auto &hashCandidates : sameHash) {
+                    if (cancelled_.load(std::memory_order_relaxed))
+                        break;
                     if (hashCandidates.size() < 2)
                         continue;
                     QVector<QVector<FileRecord>> exactGroups;
                     for (const auto &record : hashCandidates) {
+                        if (cancelled_.load(std::memory_order_relaxed))
+                            break;
                         bool placed = false;
                         for (auto &exact : exactGroups) {
-                            if (filesEqual(exact.front().path, record.path)) {
+                            if (filesEqual(exact.front().path, record.path, &cancelled_)) {
                                 exact.push_back(record);
                                 placed = true;
                                 break;
@@ -723,6 +530,8 @@ public slots:
                             exactGroups.push_back({record});
                     }
                     for (auto &exact : exactGroups) {
+                        if (cancelled_.load(std::memory_order_relaxed))
+                            break;
                         if (exact.size() < 2)
                             continue;
                         int duplicateCopy = 1;
@@ -730,21 +539,22 @@ public slots:
                             record.group = group;
                             record.duplicateCopy = duplicateCopy++;
                             duplicatedPaths.insert(record.path);
-                            if (o.mode == QStringLiteral("Duplicates search"))
+                            if (o.mode == QStringLiteral("Duplicates search")
+                                && shouldShowDuplicateResult(
+                                    o.showDuplicateCopiesOnly, record.duplicateCopy)) {
                                 results.push_back(record);
+                            }
                         }
                         ++group;
                     }
                 }
             }
+            if (finishIfCancelled())
+                return;
             if (o.mode == QStringLiteral("Non-Duplicates search")) {
                 for (const auto &record : candidates)
                     if (record.type == QStringLiteral("File") && !duplicatedPaths.contains(record.path))
                         results.push_back(record);
-            } else if (!o.showOnlyDuplicateFiles) {
-                for (const auto &record : candidates)
-                    if (record.type == QStringLiteral("File") && !duplicatedPaths.contains(record.path))
-                        results.push_back(record);
             }
         } else if (o.mode == QStringLiteral("Duplicate names search")) {
             QHash<QString, QVector<FileRecord>> byName;
@@ -758,6 +568,8 @@ public slots:
             quint64 namesDone = 0;
             emit phaseProgress(tr("Comparing duplicate names"), 0, byName.size());
             for (auto sameName : byName) {
+                if (cancelled_.load(std::memory_order_relaxed))
+                    break;
                 ++namesDone;
                 if (namesDone % 32 == 0 || namesDone == quint64(byName.size()))
                     emit phaseProgress(tr("Comparing duplicate names"), namesDone, byName.size());
@@ -771,7 +583,8 @@ public slots:
                     bool identical = !firstHash.isEmpty();
                     for (qsizetype i = 1; identical && i < sameName.size(); ++i) {
                         identical = cachedSha256(sameName[i]) == firstHash
-                            && filesEqual(sameName.front().path, sameName[i].path);
+                            && filesEqual(
+                                sameName.front().path, sameName[i].path, &cancelled_);
                     }
                     const bool wantsNonIdentical = o.duplicateNameMode.startsWith(QStringLiteral("Only non"));
                     if (identical == wantsNonIdentical)
@@ -785,9 +598,13 @@ public slots:
                 }
                 ++group;
             }
+            if (finishIfCancelled())
+                return;
         } else if (o.mode == QStringLiteral("Summary")) {
             QHash<QString, QVector<FileRecord>> byFolder;
             for (const auto &record : candidates) {
+                if (cancelled_.load(std::memory_order_relaxed))
+                    break;
                 byFolder[record.folder].push_back(record);
                 if (o.includeSubfoldersInSummary) {
                     QDir parent(record.folder);
@@ -807,6 +624,8 @@ public slots:
                 }
             }
             for (auto it = byFolder.cbegin(); it != byFolder.cend(); ++it) {
+                if (cancelled_.load(std::memory_order_relaxed))
+                    break;
                 qint64 total = 0;
                 qint64 totalOnDisk = 0;
                 qint64 newest = 0;
@@ -820,10 +639,14 @@ public slots:
                                    newest, 0, 0, 0, tr("%1 files").arg(it.value().size()),
                                    {}, {}, 0, 0});
             }
+            if (finishIfCancelled())
+                return;
         } else {
             results = std::move(candidates);
         }
 
+        if (finishIfCancelled())
+            return;
         const double seconds = std::chrono::duration<double>(
             std::chrono::steady_clock::now() - started).count();
         cache_.save();
@@ -847,8 +670,9 @@ private:
             return digest;
         }
         cacheMisses_.fetch_add(1, std::memory_order_relaxed);
-        digest = sha256(record.path);
-        cache_.storeHash(record, digest);
+        digest = sha256(record.path, &cancelled_);
+        if (!cancelled_.load(std::memory_order_relaxed))
+            cache_.storeHash(record, digest);
         return digest;
     }
 
@@ -863,8 +687,9 @@ private:
             return *cached;
         }
         cacheMisses_.fetch_add(1, std::memory_order_relaxed);
-        const bool matched = fileContains(record.path, o);
-        cache_.storeContent(record, queryKey, matched);
+        const bool matched = fileContains(record.path, o, &cancelled_);
+        if (!cancelled_.load(std::memory_order_relaxed))
+            cache_.storeContent(record, queryKey, matched);
         return matched;
     }
 
@@ -1080,7 +905,7 @@ public:
         binary_ = new QCheckBox(tr("Binary search (hex bytes, e.g. A2 C5 2F)")); binary_->setChecked(o.binary);
         multiple_ = new QCheckBox(tr("Search multiple values (comma separated)")); multiple_->setChecked(o.multipleValues);
         multipleMode_ = new QComboBox; multipleMode_->addItems({tr("Or"), tr("And")});
-        multipleMode_->setCurrentText(o.multipleAnd ? tr("And") : tr("Or"));
+        multipleMode_->setCurrentIndex(o.multipleAnd ? 1 : 0);
         caseSensitive_ = new QCheckBox(tr("Case sensitive")); caseSensitive_->setChecked(o.caseSensitive);
         contentForm->addRow(binary_);
         contentForm->addRow(multiple_);
@@ -1119,7 +944,7 @@ public:
         tabs->addTab(filterPage, tr("Size, time & attributes"));
 
         auto *buttons = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
-        connect(buttons, &QDialogButtonBox::accepted, this, &QDialog::accept);
+        connect(buttons, &QDialogButtonBox::accepted, this, &OptionsDialog::accept);
         connect(buttons, &QDialogButtonBox::rejected, this, &QDialog::reject);
         connect(browse, &QPushButton::clicked, this, [this] {
             const QStringList existingFolders = patterns(roots_->text());
@@ -1151,14 +976,14 @@ public:
         o.contains = contains_->toPlainText();
         o.binary = binary_->isChecked();
         o.multipleValues = multiple_->isChecked();
-        o.multipleAnd = multipleMode_->currentText() == tr("And");
+        o.multipleAnd = multipleMode_->currentIndex() == 1;
         o.caseSensitive = caseSensitive_->isChecked();
         o.minSize = minSize_->value();
         o.maxSize = maxSize_->value();
         o.timeField = timeField_->currentText();
         o.lastMinutes = lastMinutes_->value();
-        o.minTime = QDateTime::fromString(minTime_->text(), Qt::ISODate).toSecsSinceEpoch();
-        o.maxTime = QDateTime::fromString(maxTime_->text(), Qt::ISODate).toSecsSinceEpoch();
+        o.minTime = dateValue(minTime_);
+        o.maxTime = dateValue(maxTime_);
         o.recursive = recursive_->isChecked();
         o.findFiles = findFiles_->isChecked();
         o.findFolders = findFolders_->isChecked();
@@ -1177,6 +1002,15 @@ public:
         return o;
     }
 
+protected:
+    void accept() override
+    {
+        if (!validateDate(minTime_, tr("From time"))
+            || !validateDate(maxTime_, tr("To time")))
+            return;
+        QDialog::accept();
+    }
+
 private:
     static QLineEdit *addLine(QFormLayout *layout, const QString &label, const QString &value)
     {
@@ -1184,14 +1018,33 @@ private:
         layout->addRow(label, edit);
         return edit;
     }
-    static QSpinBox *sizeSpin(qint64 value)
+    static LongLongSpinBox *sizeSpin(qint64 value)
     {
-        auto *spin = new QSpinBox;
-        spin->setRange(0, 2'000'000'000);
+        auto *spin = new LongLongSpinBox;
+        spin->setRange(0, std::numeric_limits<qint64>::max());
         spin->setSuffix(QObject::tr(" bytes"));
-        spin->setValue(static_cast<int>(std::min<qint64>(value, spin->maximum())));
+        spin->setValue(value);
         return spin;
     }
+    static qint64 dateValue(const QLineEdit *edit)
+    {
+        qint64 seconds = 0;
+        parseOptionalIsoDate(edit->text(), seconds);
+        return seconds;
+    }
+    bool validateDate(QLineEdit *edit, const QString &label)
+    {
+        qint64 seconds = 0;
+        if (parseOptionalIsoDate(edit->text(), seconds))
+            return true;
+        QMessageBox::warning(
+            this, tr("Invalid date"),
+            tr("%1 must be a valid ISO date and time, for example:\n2026-07-25T20:30:00")
+                .arg(label));
+        edit->setFocus();
+        edit->selectAll();
+        return false;
+    }
     static QComboBox *attrCombo(const QString &value)
     {
         auto *combo = new QComboBox;
@@ -1214,8 +1067,8 @@ private:
     QCheckBox *multiple_{};
     QComboBox *multipleMode_{};
     QCheckBox *caseSensitive_{};
-    QSpinBox *minSize_{};
-    QSpinBox *maxSize_{};
+    LongLongSpinBox *minSize_{};
+    LongLongSpinBox *maxSize_{};
     QComboBox *timeField_{};
     QSpinBox *lastMinutes_{};
     QLineEdit *minTime_{};
@@ -1405,14 +1258,14 @@ public:
             action->setCheckable(true);
             duplicateOptionsGroup->addAction(action);
         }
-        showOnlyDuplicates->setChecked(options_.showOnlyDuplicateFiles);
-        showAllDuplicates->setChecked(!options_.showOnlyDuplicateFiles);
+        showOnlyDuplicates->setChecked(options_.showDuplicateCopiesOnly);
+        showAllDuplicates->setChecked(!options_.showDuplicateCopiesOnly);
         connect(showOnlyDuplicates, &QAction::triggered, this, [this] {
-            options_.showOnlyDuplicateFiles = true;
+            options_.showDuplicateCopiesOnly = true;
             saveOptions();
         });
         connect(showAllDuplicates, &QAction::triggered, this, [this] {
-            options_.showOnlyDuplicateFiles = false;
+            options_.showDuplicateCopiesOnly = false;
             saveOptions();
         });
 
@@ -1472,6 +1325,15 @@ public:
                     .arg(QStringLiteral(FOLDERSCOPE_VERSION)));
         });
 
+        staleSearchWarning_ = new QLabel(
+            tr("⚠ Search settings changed — press F5 to rescan"));
+        staleSearchWarning_->setStyleSheet(
+            QStringLiteral("QLabel { color: #f0b429; font-weight: 600; padding: 0 6px; }"));
+        staleSearchWarning_->setToolTip(
+            tr("Displayed results were produced with different search settings."));
+        staleSearchWarning_->hide();
+        statusBar()->addPermanentWidget(staleSearchWarning_);
+
         progress_ = new QProgressBar;
         progress_->setRange(0, 0);
         progress_->setMinimumWidth(280);
@@ -1491,12 +1353,16 @@ public:
             statusBar()->showMessage(tr("Search cache cleared"), 5000);
         });
         connect(engine_, &SearchEngine::progress, this, [this](const QString &path, quint64 count) {
+            if (isStopping_)
+                return;
             progress_->setRange(0, 0);
             progress_->setFormat(tr("Scanning… %1 entries").arg(count));
             statusBar()->showMessage(tr("Scanning %1 (%2 entries)").arg(path).arg(count));
         });
         connect(engine_, &SearchEngine::phaseProgress, this,
                 [this](const QString &phase, quint64 completed, quint64 total) {
+            if (isStopping_)
+                return;
             if (total == 0) {
                 progress_->setRange(0, 0);
                 progress_->setFormat(completed
@@ -1518,7 +1384,14 @@ public:
         workerThread_.start();
 
         connect(searchAction_, &QAction::triggered, this, &MainWindow::showOptions);
-        connect(stopAction_, &QAction::triggered, this, [this] { emit stopRequested(); });
+        connect(stopAction_, &QAction::triggered, this, [this] {
+            isStopping_ = true;
+            stopAction_->setEnabled(false);
+            progress_->setRange(0, 0);
+            progress_->setFormat(tr("Stopping…"));
+            statusBar()->showMessage(tr("Stopping search…"));
+            emit stopRequested();
+        });
         connect(refreshAction_, &QAction::triggered, this, &MainWindow::refreshSearch);
         connect(exportAction, &QAction::triggered, this, &MainWindow::exportResults);
         connect(openAction, &QAction::triggered, this, &MainWindow::openSelected);
@@ -1700,6 +1573,9 @@ private slots:
         if (isSearching_ || options_.roots.trimmed().isEmpty())
             return;
         isSearching_ = true;
+        isStopping_ = false;
+        lastSearchOptions_ = options_;
+        updateStaleSearchWarning();
         applyDisplayOptions();
         model_->setRows({});
         searchAction_->setEnabled(false);
@@ -1718,12 +1594,14 @@ private slots:
     void searchFinished(const QVector<FileRecord> &results, const QString &message)
     {
         isSearching_ = false;
+        isStopping_ = false;
         model_->setRows(results);
         searchAction_->setEnabled(true);
         stopAction_->setEnabled(false);
         refreshAction_->setEnabled(true);
         progress_->hide();
         statusBar()->showMessage(message);
+        updateStaleSearchWarning();
         if (autoSizeOnSearchEnd_) {
             table_->horizontalHeader()->setSectionResizeMode(QHeaderView::Interactive);
             table_->resizeColumnsToContents();
@@ -1925,7 +1803,7 @@ private slots:
                        this, &MainWindow::showProperties);
         menu.addSeparator();
         menu.addAction(tr("Refresh"), QKeySequence(Qt::Key_F5), this, &MainWindow::refreshSearch);
-        menu.exec(table_->viewport()->mapToGlobal(point));
+        menu.exec(table_->mapToGlobal(point));
     }
 
     void headerContextMenu(const QPoint &point)
@@ -2132,11 +2010,16 @@ private:
     QStringList selectedPaths() const
     {
         QStringList paths;
-        QSet<int> sourceRows;
-        for (const QModelIndex &index : table_->selectionModel()->selectedRows())
-            sourceRows.insert(proxy_->mapToSource(index).row());
-        for (int row : sourceRows)
-            paths.push_back(model_->data(model_->index(row, 0), Qt::UserRole).toString());
+        QModelIndexList selected = table_->selectionModel()->selectedRows();
+        std::sort(selected.begin(), selected.end(),
+                  [](const QModelIndex &left, const QModelIndex &right) {
+            return left.row() < right.row();
+        });
+        for (const QModelIndex &index : selected) {
+            const int sourceRow = proxy_->mapToSource(index).row();
+            paths.push_back(model_->data(
+                model_->index(sourceRow, ResultsModel::Name), Qt::UserRole).toString());
+        }
         return paths;
     }
 
@@ -2170,11 +2053,20 @@ private:
         settings.setValue(QStringLiteral("mode"), options_.mode);
         settings.setValue(QStringLiteral("duplicateNameMode"), options_.duplicateNameMode);
         settings.setValue(QStringLiteral("duplicateNameWithoutExtension"), options_.duplicateNameWithoutExtension);
-        settings.setValue(QStringLiteral("showOnlyDuplicateFiles"), options_.showOnlyDuplicateFiles);
+        settings.setValue(QStringLiteral("showDuplicateCopiesOnly"), options_.showDuplicateCopiesOnly);
         settings.setValue(QStringLiteral("includeSubfoldersInSummary"), options_.includeSubfoldersInSummary);
         settings.setValue(QStringLiteral("hidden"), options_.hidden);
         settings.setValue(QStringLiteral("readonly"), options_.readonly);
         settings.setValue(QStringLiteral("executable"), options_.executable);
+        updateStaleSearchWarning();
+    }
+
+    void updateStaleSearchWarning()
+    {
+        if (!staleSearchWarning_)
+            return;
+        staleSearchWarning_->setVisible(
+            lastSearchOptions_.has_value() && options_ != *lastSearchOptions_);
     }
 
     void loadOptions()
@@ -2207,7 +2099,9 @@ private:
         options_.mode = s.value(QStringLiteral("mode"), options_.mode).toString();
         options_.duplicateNameMode = s.value(QStringLiteral("duplicateNameMode"), options_.duplicateNameMode).toString();
         options_.duplicateNameWithoutExtension = s.value(QStringLiteral("duplicateNameWithoutExtension"), false).toBool();
-        options_.showOnlyDuplicateFiles = s.value(QStringLiteral("showOnlyDuplicateFiles"), true).toBool();
+        options_.showDuplicateCopiesOnly =
+            s.value(QStringLiteral("showDuplicateCopiesOnly"),
+                    s.value(QStringLiteral("showOnlyDuplicateFiles"), true)).toBool();
         options_.includeSubfoldersInSummary = s.value(QStringLiteral("includeSubfoldersInSummary"), false).toBool();
         options_.hidden = s.value(QStringLiteral("hidden"), options_.hidden).toString();
         options_.readonly = s.value(QStringLiteral("readonly"), options_.readonly).toString();
@@ -2236,9 +2130,11 @@ private:
     QAction *searchAction_{};
     QAction *stopAction_{};
     QAction *refreshAction_{};
+    QLabel *staleSearchWarning_{};
     QProgressBar *progress_{};
     QThread workerThread_;
     SearchEngine *engine_{};
+    std::optional<SearchOptions> lastSearchOptions_;
     QString findQuery_;
     QString summarySizeUnitName_ = QStringLiteral("Automatic");
     QString doubleClickAction_ = QStringLiteral("Open Properties Window");
@@ -2254,6 +2150,7 @@ private:
     bool showGrid_ = true;
     bool showTooltips_ = true;
     bool isSearching_ = false;
+    bool isStopping_ = false;
 };
 
 int main(int argc, char **argv)

src/search_core.cpp

@@ -0,0 +1,202 @@
+#include "search_core.h"
+
+#include <QCryptographicHash>
+#include <QDateTime>
+#include <QFile>
+#include <QRegularExpression>
+
+#include <algorithm>
+#include <pwd.h>
+
+QStringList patterns(const QString &text)
+{
+    QStringList out;
+    QString item;
+    bool quoted = false;
+    for (QChar ch : text) {
+        if (ch == u'"') {
+            quoted = !quoted;
+        } else if (!quoted && (ch == u';' || ch == u',')) {
+            if (!item.trimmed().isEmpty())
+                out.push_back(item.trimmed());
+            item.clear();
+        } else {
+            item += ch;
+        }
+    }
+    if (!item.trimmed().isEmpty())
+        out.push_back(item.trimmed());
+    return out;
+}
+
+QStringList exclusionPatterns(const QString &text)
+{
+    QString normalized = text;
+    normalized.replace(QRegularExpression(QStringLiteral("\\s+")), QStringLiteral(";"));
+    QStringList result = patterns(normalized);
+    for (QString &pattern : result) {
+        if (!pattern.contains(u'*') && !pattern.contains(u'?') && !pattern.contains(u'/'))
+            pattern = QStringLiteral("*.") + pattern.remove(QRegularExpression(QStringLiteral("^\\.")));
+    }
+    return result;
+}
+
+bool wildcardMatch(const QString &value, const QStringList &items, Qt::CaseSensitivity cs)
+{
+    for (const QString &pattern : items) {
+        const auto regex = QRegularExpression(
+            QRegularExpression::wildcardToRegularExpression(pattern),
+            cs == Qt::CaseInsensitive ? QRegularExpression::CaseInsensitiveOption
+                                      : QRegularExpression::NoPatternOption);
+        if (regex.match(value).hasMatch())
+            return true;
+    }
+    return false;
+}
+
+bool shouldShowDuplicateResult(bool copiesOnly, int keeperPriority)
+{
+    if (keeperPriority < 1)
+        return false;
+    return !copiesOnly || keeperPriority > 1;
+}
+
+QString humanSize(qint64 bytes)
+{
+    static const QStringList units{QStringLiteral("B"), QStringLiteral("KB"),
+                                   QStringLiteral("MB"), QStringLiteral("GB"),
+                                   QStringLiteral("TB")};
+    double value = static_cast<double>(bytes);
+    int unit = 0;
+    while (value >= 1024.0 && unit < units.size() - 1) {
+        value /= 1024.0;
+        ++unit;
+    }
+    return unit == 0 ? QStringLiteral("%1 B").arg(bytes)
+                     : QStringLiteral("%1 %2").arg(value, 0, 'f', 2).arg(units[unit]);
+}
+
+QString ownerName(uid_t uid)
+{
+    struct passwd pwd {};
+    struct passwd *result = nullptr;
+    QByteArray buffer(16384, Qt::Uninitialized);
+    if (getpwuid_r(uid, &pwd, buffer.data(), static_cast<size_t>(buffer.size()), &result) == 0 && result)
+        return QString::fromLocal8Bit(result->pw_name);
+    return QString::number(uid);
+}
+
+std::optional<QByteArray> hexNeedle(QString text)
+{
+    text.remove(QRegularExpression(QStringLiteral("\\s+")));
+    if (text.size() % 2 != 0 || !QRegularExpression(QStringLiteral("^[0-9a-fA-F]*$")).match(text).hasMatch())
+        return std::nullopt;
+    return QByteArray::fromHex(text.toLatin1());
+}
+
+namespace {
+bool isCancelled(const std::atomic_bool *cancelled)
+{
+    return cancelled && cancelled->load(std::memory_order_relaxed);
+}
+}
+
+bool fileContains(const QString &path, const SearchOptions &options,
+                  const std::atomic_bool *cancelled)
+{
+    if (isCancelled(cancelled))
+        return false;
+    if (options.contains.isEmpty())
+        return true;
+
+    const QStringList terms = options.multipleValues
+        ? patterns(options.contains) : QStringList{options.contains};
+    QList<QByteArray> needles;
+    for (const QString &term : terms) {
+        if (options.binary) {
+            const auto bytes = hexNeedle(term);
+            if (!bytes)
+                return false;
+            needles.push_back(*bytes);
+        } else {
+            needles.push_back(term.toUtf8());
+        }
+    }
+    if (needles.isEmpty())
+        return true;
+
+    QFile file(path);
+    if (!file.open(QIODevice::ReadOnly))
+        return false;
+
+    QVector<bool> found(needles.size(), false);
+    qsizetype overlap = 1;
+    for (const QByteArray &needle : needles)
+        overlap = std::max(overlap, needle.size());
+    QByteArray tail;
+    while (!file.atEnd() && !isCancelled(cancelled)) {
+        QByteArray data = tail + file.read(1024 * 1024);
+        if (!options.caseSensitive && !options.binary)
+            data = data.toLower();
+        for (qsizetype i = 0; i < needles.size(); ++i) {
+            QByteArray needle = needles[i];
+            if (!options.caseSensitive && !options.binary)
+                needle = needle.toLower();
+            if (!found[i] && data.contains(needle))
+                found[i] = true;
+        }
+        const bool matched = options.multipleAnd
+            ? std::all_of(found.cbegin(), found.cend(), [](bool foundTerm) { return foundTerm; })
+            : std::any_of(found.cbegin(), found.cend(), [](bool foundTerm) { return foundTerm; });
+        if (matched)
+            return true;
+        tail = data.right(overlap - 1);
+    }
+    return false;
+}
+
+bool filesEqual(const QString &leftPath, const QString &rightPath,
+                const std::atomic_bool *cancelled)
+{
+    if (isCancelled(cancelled))
+        return false;
+    QFile left(leftPath);
+    QFile right(rightPath);
+    if (!left.open(QIODevice::ReadOnly) || !right.open(QIODevice::ReadOnly)
+        || left.size() != right.size())
+        return false;
+    while (!left.atEnd() && !isCancelled(cancelled)) {
+        const QByteArray leftData = left.read(1024 * 1024);
+        const QByteArray rightData = right.read(leftData.size());
+        if (leftData != rightData)
+            return false;
+    }
+    return !isCancelled(cancelled) && right.atEnd();
+}
+
+QByteArray sha256(const QString &path, const std::atomic_bool *cancelled)
+{
+    if (isCancelled(cancelled))
+        return {};
+    QFile file(path);
+    if (!file.open(QIODevice::ReadOnly))
+        return {};
+    QCryptographicHash hash(QCryptographicHash::Sha256);
+    while (!file.atEnd() && !isCancelled(cancelled))
+        hash.addData(file.read(1024 * 1024));
+    return isCancelled(cancelled) ? QByteArray{} : hash.result();
+}
+
+bool parseOptionalIsoDate(const QString &text, qint64 &seconds)
+{
+    const QString trimmed = text.trimmed();
+    if (trimmed.isEmpty()) {
+        seconds = 0;
+        return true;
+    }
+    const QDateTime parsed = QDateTime::fromString(trimmed, Qt::ISODate);
+    if (!parsed.isValid())
+        return false;
+    seconds = parsed.toSecsSinceEpoch();
+    return true;
+}

src/search_core.h

@@ -0,0 +1,86 @@
+#pragma once
+
+#include <QByteArray>
+#include <QDir>
+#include <QMetaType>
+#include <QString>
+#include <QStringList>
+#include <QVector>
+
+#include <atomic>
+#include <optional>
+#include <sys/types.h>
+
+struct SearchOptions {
+    QString roots = QDir::homePath();
+    QString fileWildcards = QStringLiteral("*");
+    QString subfolderWildcards = QStringLiteral("*");
+    QString excludeFiles;
+    QString excludeFolders;
+    QString includeFolders;
+    QString contains;
+    bool binary = false;
+    bool multipleValues = false;
+    bool multipleAnd = false;
+    bool caseSensitive = false;
+    qint64 minSize = 0;
+    qint64 maxSize = 0;
+    qint64 minTime = 0;
+    qint64 maxTime = 0;
+    QString timeField = QStringLiteral("Modified time");
+    int lastMinutes = 0;
+    bool recursive = true;
+    bool findFiles = true;
+    bool findFolders = false;
+    bool followLinks = false;
+    bool retrieveOwner = false;
+    bool accurateProgress = true;
+    bool useCache = true;
+    int maxDepth = 0;
+    int maxResults = 0;
+    QString mode = QStringLiteral("Standard search");
+    QString duplicateNameMode = QStringLiteral("All files and folders");
+    bool duplicateNameWithoutExtension = false;
+    bool showDuplicateCopiesOnly = true;
+    bool includeSubfoldersInSummary = false;
+    QString hidden = QStringLiteral("Any");
+    QString readonly = QStringLiteral("Any");
+    QString executable = QStringLiteral("Any");
+
+    bool operator==(const SearchOptions &) const = default;
+};
+
+struct FileRecord {
+    QString path;
+    QString name;
+    QString folder;
+    qint64 size = 0;
+    qint64 sizeOnDisk = 0;
+    qint64 modified = 0;
+    qint64 created = 0;
+    qint64 accessed = 0;
+    qint64 changed = 0;
+    QString type;
+    QString owner;
+    QString attributes;
+    int group = 0;
+    int duplicateCopy = 0;
+};
+
+Q_DECLARE_METATYPE(SearchOptions)
+Q_DECLARE_METATYPE(FileRecord)
+Q_DECLARE_METATYPE(QVector<FileRecord>)
+
+QStringList patterns(const QString &text);
+QStringList exclusionPatterns(const QString &text);
+bool wildcardMatch(const QString &value, const QStringList &items, Qt::CaseSensitivity cs);
+QString humanSize(qint64 bytes);
+QString ownerName(uid_t uid);
+std::optional<QByteArray> hexNeedle(QString text);
+bool fileContains(const QString &path, const SearchOptions &options,
+                  const std::atomic_bool *cancelled = nullptr);
+bool filesEqual(const QString &leftPath, const QString &rightPath,
+                const std::atomic_bool *cancelled = nullptr);
+QByteArray sha256(const QString &path, const std::atomic_bool *cancelled = nullptr);
+bool parseOptionalIsoDate(const QString &text, qint64 &seconds);
+bool shouldShowDuplicateResult(bool copiesOnly, int keeperPriority);

tests/long_long_spin_box_test.cpp

@@ -0,0 +1,40 @@
+#include "long_long_spin_box.h"
+
+#include <QLineEdit>
+#include <QtTest>
+
+class LongLongSpinBoxTest final : public QObject {
+    Q_OBJECT
+
+private slots:
+    void preservesValuesAboveTwoGigabytes()
+    {
+        LongLongSpinBox spin;
+        spin.setRange(0, std::numeric_limits<qint64>::max());
+        spin.setSuffix(QStringLiteral(" bytes"));
+        spin.setValue(5'000'000'000);
+        QCOMPARE(spin.value(), qint64(5'000'000'000));
+        QCOMPARE(spin.findChild<QLineEdit *>()->text(), QStringLiteral("5000000000 bytes"));
+        spin.stepUp();
+        QCOMPARE(spin.value(), qint64(5'000'000'001));
+
+        spin.findChild<QLineEdit *>()->setText(QStringLiteral("6000000000 bytes"));
+        QVERIFY(QMetaObject::invokeMethod(&spin, "editingFinished", Qt::DirectConnection));
+        QCOMPARE(spin.value(), qint64(6'000'000'000));
+    }
+
+    void clampsAtRangeEdges()
+    {
+        LongLongSpinBox spin;
+        spin.setRange(0, 10);
+        spin.setValue(10);
+        spin.stepUp();
+        QCOMPARE(spin.value(), qint64(10));
+        spin.setValue(-50);
+        QCOMPARE(spin.value(), qint64(0));
+    }
+};
+
+QTEST_MAIN(LongLongSpinBoxTest)
+
+#include "long_long_spin_box_test.moc"

tests/release_dirty_test.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+release_script="$(realpath "$1")"
+test_directory="$(mktemp -d)"
+trap 'rm -rf "$test_directory"' EXIT
+
+git -C "$test_directory" init -q
+git -C "$test_directory" config user.name "FolderScope Tests"
+git -C "$test_directory" config user.email "tests@folderscope.invalid"
+printf '9.9.9\n' > "$test_directory/VERSION"
+printf '# Changelog\n\n## [9.9.9]\n' > "$test_directory/CHANGELOG.md"
+git -C "$test_directory" add VERSION CHANGELOG.md
+git -C "$test_directory" commit -q -m "test fixture"
+touch "$test_directory/untracked"
+
+if (cd "$test_directory" && "$release_script" 9.9.9 >/dev/null 2>&1); then
+    echo "release.sh accepted a repository with untracked files" >&2
+    exit 1
+fi

tests/search_core_test.cpp

@@ -0,0 +1,115 @@
+#include "search_core.h"
+
+#include <QCryptographicHash>
+#include <QFile>
+#include <QTemporaryDir>
+#include <QtTest>
+
+class SearchCoreTest final : public QObject {
+    Q_OBJECT
+
+private slots:
+    void parsesPatternsAndExclusions()
+    {
+        QCOMPARE(patterns(QStringLiteral("/a; \"/b,with-comma\" , /c")),
+                 QStringList({QStringLiteral("/a"), QStringLiteral("/b,with-comma"),
+                              QStringLiteral("/c")}));
+        QCOMPARE(exclusionPatterns(QStringLiteral("tmp log *.bak")),
+                 QStringList({QStringLiteral("*.tmp"), QStringLiteral("*.log"),
+                              QStringLiteral("*.bak")}));
+        QVERIFY(wildcardMatch(QStringLiteral("Report.TXT"), {QStringLiteral("*.txt")},
+                              Qt::CaseInsensitive));
+        QVERIFY(!wildcardMatch(QStringLiteral("Report.TXT"), {QStringLiteral("*.txt")},
+                               Qt::CaseSensitive));
+    }
+
+    void parsesOptionalIsoDates()
+    {
+        qint64 seconds = -1;
+        QVERIFY(parseOptionalIsoDate(QString{}, seconds));
+        QCOMPARE(seconds, 0);
+        QVERIFY(parseOptionalIsoDate(QStringLiteral("2026-07-25T20:30:00"), seconds));
+        QVERIFY(seconds > 0);
+        QVERIFY(!parseOptionalIsoDate(QStringLiteral("2026-not-a-date"), seconds));
+    }
+
+    void selectsDuplicateRowsForDisplay()
+    {
+        QVERIFY(!shouldShowDuplicateResult(true, 0));
+        QVERIFY(!shouldShowDuplicateResult(true, 1));
+        QVERIFY(shouldShowDuplicateResult(true, 2));
+
+        QVERIFY(!shouldShowDuplicateResult(false, 0));
+        QVERIFY(shouldShowDuplicateResult(false, 1));
+        QVERIFY(shouldShowDuplicateResult(false, 2));
+    }
+
+    void searchesContentsAndHashes()
+    {
+        QTemporaryDir directory;
+        QVERIFY(directory.isValid());
+        const QString firstPath = directory.filePath(QStringLiteral("first.bin"));
+        const QString secondPath = directory.filePath(QStringLiteral("second.bin"));
+        const QString differentPath = directory.filePath(QStringLiteral("different.bin"));
+        const QByteArray content = QByteArray(1024 * 1024 - 2, 'x')
+            + QByteArray("Alpha needle BETA");
+
+        QFile first(firstPath);
+        QVERIFY(first.open(QIODevice::WriteOnly));
+        QCOMPARE(first.write(content), content.size());
+        first.close();
+
+        QFile second(secondPath);
+        QVERIFY(second.open(QIODevice::WriteOnly));
+        QCOMPARE(second.write(content), content.size());
+        second.close();
+
+        QFile different(differentPath);
+        QVERIFY(different.open(QIODevice::WriteOnly));
+        QCOMPARE(different.write("different"), qint64(9));
+        different.close();
+
+        SearchOptions options;
+        options.contains = QStringLiteral("needle");
+        QVERIFY(fileContains(firstPath, options));
+        options.contains = QStringLiteral("alpha,beta");
+        options.multipleValues = true;
+        options.multipleAnd = true;
+        QVERIFY(fileContains(firstPath, options));
+        options.caseSensitive = true;
+        QVERIFY(!fileContains(firstPath, options));
+        options.binary = true;
+        options.multipleValues = false;
+        options.multipleAnd = false;
+        options.contains = QStringLiteral("41 6c 70 68 61");
+        QVERIFY(fileContains(firstPath, options));
+        options.contains = QStringLiteral("ABC");
+        QVERIFY(!fileContains(firstPath, options));
+
+        QVERIFY(filesEqual(firstPath, secondPath));
+        QVERIFY(!filesEqual(firstPath, differentPath));
+        QCOMPARE(sha256(firstPath), QCryptographicHash::hash(content, QCryptographicHash::Sha256));
+    }
+
+    void cancelsFileOperations()
+    {
+        QTemporaryDir directory;
+        QVERIFY(directory.isValid());
+        const QString path = directory.filePath(QStringLiteral("file.bin"));
+        QFile file(path);
+        QVERIFY(file.open(QIODevice::WriteOnly));
+        QCOMPARE(file.write("needle"), qint64(6));
+        file.close();
+
+        std::atomic_bool cancelled = true;
+        SearchOptions options;
+        options.contains = QStringLiteral("needle");
+        QVERIFY(!fileContains(path, options, &cancelled));
+        QVERIFY(!filesEqual(path, path, &cancelled));
+        QVERIFY(sha256(path, &cancelled).isEmpty());
+    }
+};
+
+QTEST_GUILESS_MAIN(SearchCoreTest)
+
+#include "search_core_test.moc"