Use null-aware spread in material/app.dart#181586
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It looks like this pull request may not have tests. Please make sure to add tests or get an explicit test exemption before merging. If you are not sure if you need tests, consider this rule of thumb: the purpose of a test is to make sure someone doesn't accidentally revert the fix. Ask yourself, is there anything in your PR that you feel it is important we not accidentally revert back to how it was before your fix? Reviewers: Read the Tree Hygiene page and make sure this patch meets those guidelines before LGTMing. If you believe this PR qualifies for a test exemption, contact "@test-exemption-reviewer" in the #hackers channel in Discord (don't just cc them here, they won't see it!). The test exemption team is a small volunteer group, so all reviewers should feel empowered to ask for tests, without delegating that responsibility entirely to the test exemption group. |
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This pull request updates packages/flutter/lib/src/material/app.dart to use the null-aware spread operator (...?) for adding widget.localizationsDelegates to the list of delegates. This replaces the previous if (x != null) ...x! pattern, resulting in more concise code. The change is correct and aligns with modern Dart practices.
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Thanks for adopting it @brahim-guaali! 👏 |
victorsanni
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Jan 29, 2026
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@ksokolovskyi @AbdeMohlbi can you please set this to auto submit? |
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@brahim-guaali, thanks for your contributions! For changes that all contribute to the same issue and are small, could you please batch them into a single PR or a small number of PRs, instead of opening many separate ones? This will help avoid unnecessary CI usage and make reviews faster and easier for the Flutter team. |
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flutter/flutter@9eafba4...c305f1f 2026-02-02 146823759+brahim-guaali@users.noreply.github.com Fix DecoratedSliver sample to avoid antialiasing gap (flutter/flutter#179848) 2026-02-02 koutaro.mo@gmail.com [Android] Add predictive back support for FlutterFragment and FlutterFragmentActivity (flutter/flutter#181124) 2026-02-02 engine-flutter-autoroll@skia.org Roll Packages from 510dd40 to 837dbbd (3 revisions) (flutter/flutter#181811) 2026-02-02 engine-flutter-autoroll@skia.org Roll Dart SDK from 434c5c6d1889 to 1aa8f2de7587 (1 revision) (flutter/flutter#181810) 2026-02-02 146823759+brahim-guaali@users.noreply.github.com Use null-aware elements in cupertino/list_tile.dart (flutter/flutter#181243) 2026-02-02 146823759+brahim-guaali@users.noreply.github.com Use null-aware elements in material/dialog.dart (flutter/flutter#181244) 2026-02-02 146823759+brahim-guaali@users.noreply.github.com Use null-aware spread in cupertino/app.dart (flutter/flutter#181585) 2026-02-02 146823759+brahim-guaali@users.noreply.github.com Use null-aware spread in material/app.dart (flutter/flutter#181586) 2026-02-02 engine-flutter-autoroll@skia.org Roll Dart SDK from 84abc8d58ec8 to 434c5c6d1889 (1 revision) (flutter/flutter#181800) 2026-02-02 engine-flutter-autoroll@skia.org Roll Skia from c14c5b243395 to 43fa79e1c51f (8 revisions) (flutter/flutter#181797) 2026-02-02 engine-flutter-autoroll@skia.org Roll Skia from 4ee9eb659ae0 to c14c5b243395 (1 revision) (flutter/flutter#181780) 2026-02-02 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from nI52U4LJMrBv8G1M9... to 1L4m9qCikk-JzrNWE... (flutter/flutter#181779) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-packages Please CC stuartmorgan@google.com on the revert to ensure that a human is aware of the problem. To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://issues.skia.org/issues/new?component=1389291&template=1850622 Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
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## Description Adopts null-aware spread syntax (`...?x`) in `material/app.dart`, replacing the verbose `if (x != null) ...x!` pattern. Fixes flutter#172188 ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide]. - [x] I listed at least one issue that this PR fixes in the description above. - [x] I added new tests to check the change I am making, or this PR is [test-exempt]. - [x] All existing and new tests are passing. [Contributor Guide]: https://github.com/flutter/flutter/blob/master/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/master/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/master/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/master/docs/contributing/Style-guide-for-Flutter-repo.md [](https://www.talabat.com) [](https://github.com/search?q=org%3Aflutter+talabat&type=pullrequests)
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## Description Adopts null-aware spread syntax (`...?x`) in `material/app.dart`, replacing the verbose `if (x != null) ...x!` pattern. Fixes flutter#172188 ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide]. - [x] I listed at least one issue that this PR fixes in the description above. - [x] I added new tests to check the change I am making, or this PR is [test-exempt]. - [x] All existing and new tests are passing. [Contributor Guide]: https://github.com/flutter/flutter/blob/master/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/master/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/master/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/master/docs/contributing/Style-guide-for-Flutter-repo.md [](https://www.talabat.com) [](https://github.com/search?q=org%3Aflutter+talabat&type=pullrequests)
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## Description Adopts null-aware spread syntax (`...?x`) in `material/app.dart`, replacing the verbose `if (x != null) ...x!` pattern. Fixes flutter#172188 ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide]. - [x] I listed at least one issue that this PR fixes in the description above. - [x] I added new tests to check the change I am making, or this PR is [test-exempt]. - [x] All existing and new tests are passing. [Contributor Guide]: https://github.com/flutter/flutter/blob/master/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/master/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/master/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/master/docs/contributing/Style-guide-for-Flutter-repo.md [](https://www.talabat.com) [](https://github.com/search?q=org%3Aflutter+talabat&type=pullrequests)
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…r#10956) flutter/flutter@9eafba4...c305f1f 2026-02-02 146823759+brahim-guaali@users.noreply.github.com Fix DecoratedSliver sample to avoid antialiasing gap (flutter/flutter#179848) 2026-02-02 koutaro.mo@gmail.com [Android] Add predictive back support for FlutterFragment and FlutterFragmentActivity (flutter/flutter#181124) 2026-02-02 engine-flutter-autoroll@skia.org Roll Packages from 510dd40 to 837dbbd (3 revisions) (flutter/flutter#181811) 2026-02-02 engine-flutter-autoroll@skia.org Roll Dart SDK from 434c5c6d1889 to 1aa8f2de7587 (1 revision) (flutter/flutter#181810) 2026-02-02 146823759+brahim-guaali@users.noreply.github.com Use null-aware elements in cupertino/list_tile.dart (flutter/flutter#181243) 2026-02-02 146823759+brahim-guaali@users.noreply.github.com Use null-aware elements in material/dialog.dart (flutter/flutter#181244) 2026-02-02 146823759+brahim-guaali@users.noreply.github.com Use null-aware spread in cupertino/app.dart (flutter/flutter#181585) 2026-02-02 146823759+brahim-guaali@users.noreply.github.com Use null-aware spread in material/app.dart (flutter/flutter#181586) 2026-02-02 engine-flutter-autoroll@skia.org Roll Dart SDK from 84abc8d58ec8 to 434c5c6d1889 (1 revision) (flutter/flutter#181800) 2026-02-02 engine-flutter-autoroll@skia.org Roll Skia from c14c5b243395 to 43fa79e1c51f (8 revisions) (flutter/flutter#181797) 2026-02-02 engine-flutter-autoroll@skia.org Roll Skia from 4ee9eb659ae0 to c14c5b243395 (1 revision) (flutter/flutter#181780) 2026-02-02 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from nI52U4LJMrBv8G1M9... to 1L4m9qCikk-JzrNWE... (flutter/flutter#181779) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-packages Please CC stuartmorgan@google.com on the revert to ensure that a human is aware of the problem. To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://issues.skia.org/issues/new?component=1389291&template=1850622 Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
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Description
Adopts null-aware spread syntax (
...?x) inmaterial/app.dart, replacing the verboseif (x != null) ...x!pattern.Contributes to #172188
Pre-launch Checklist