"Additional run args" do not resolve and execute shell commands with --dart-define option

[JavertArdo]

Steps to Reproduce

There are no specific requirements. Just having Flutter SDK configured and Intellij IDEA with Flutter Intellij plugin installed.

# Create default demo app
$ flutter create demo && cd demo

# Create dummy config file
$ echo '{"key": "value"}' > config.json

There is no issue when passing --dart-define argument with dynamically loaded value through command in shell:

$ flutter run --dart-define APP_CONFIG=$(base64 --input config.json)
# or
$ flutter run --dart-define=APP_CONFIG=$(base64 --input config.json)

When reading from env variable in code, the expected output of base64 encoded content of config.json file is single string eyJrZXkiOiAidmFsdWUifQo=.

Environment variable can be printed in Text widget using String.fromEnvironment('APP_CONFIG') for debugging purposes.

The issue is related to Additional run args field that splits all arguments by whitespace. Hence, the APP_CONFIG value is $(base64 and flutter command interprets --input as the next argument, rather than converting command $(base64 --input config.json) to base64 encoded string first.

Even if --dart-define pasted as single line, it is automatically wrapped by whitespace:

As it can be seen on following output, --input is interpreted as the next argument of flutter command.

Moreover, when single command (without any arguments) is used, like pwd, it is interpreted as string $(pwd), not a command.

Workaround for this issue was not found. It is preferred to load some "sensitive" values or longer strings dynamically from different sources, rather than hardcoding them into Run/Debug Configurations.

Related issue: https://github.com/flutter/flutter-intellij/issues/4588

Version info

Skip following warnings/issues as they are not related to described problem.

<cut>@<cut> ~ % flutter doctor -v
Could not parse java version from: 

If there is a version please look for an existing bug https://github.com/flutter/flutter/issues/ and if one does not exist file a new issue.
[✓] Flutter (Channel stable, 3.13.8, on macOS 14.1 23B74 darwin-arm64, locale en-PL)
    • Flutter version 3.13.8 on channel stable at /Users/<cut>/Development/SDK/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 6c4930c4ac (3 weeks ago), 2023-10-18 10:57:55 -0500
    • Engine revision 767d8c75e8
    • Dart version 3.1.4
    • DevTools version 2.25.0

[!] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
    • Android SDK at /Users/<cut>/Development/SDK/android
    • Platform android-31, build-tools 31.0.0
    • ANDROID_HOME = /Users/<cut>/Development/SDK/android
    • Java binary at: /usr/bin/java
    ✗ Could not determine java version
    ✗ Android license status unknown.
      Run `flutter doctor --android-licenses` to accept the SDK licenses.
      See https://flutter.dev/docs/get-started/install/macos#android-setup for more details.

[✓] Xcode - develop for iOS and macOS (Xcode 15.0.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 15A507
    • CocoaPods version 1.11.2

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[!] Android Studio (not installed)
    • Android Studio not found; download from https://developer.android.com/studio/index.html
      (or visit https://flutter.dev/docs/get-started/install/macos#android-setup for detailed instructions).

[✓] IntelliJ IDEA Community Edition (version 2023.2.5)
    • IntelliJ at /Applications/IntelliJ IDEA CE.app
    • Flutter plugin version 76.3.4
    • Dart plugin version 232.10072.19

[✓] VS Code (version 1.84.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.76.0

[✓] Connected device (3 available)
    • iPhone 15 (mobile) • 701FDC1C-68CB-49CE-B46D-C3CF71A1D70E • ios            • com.apple.CoreSimulator.SimRuntime.iOS-17-0 (simulator)
    • macOS (desktop)    • macos                                • darwin-arm64   • macOS 14.1 23B74 darwin-arm64
    • Chrome (web)       • chrome                               • web-javascript • Google Chrome 119.0.6045.123

[✓] Network resources
    • All expected network resources are available.

! Doctor found issues in 2 categories.

[ecoant]

Landed here today after a flutter upgrade (I'm on 3.16.3) when I realized my --dart-define $(ipconfig getifaddr en0) function is no longer evaluating and causing the literal string $(ipconfig getifaddr en0) to be set as the environment variable. Issue not specific to intellij as I'm using vscode.