Detecting when installing over MingW's Git Bash, fixing paths (#39699)

AUTHORS

@@ -44,3 +44,4 @@ Simon Lightfoot <simon@devangels.london>
 Sarbagya Dhaubanjar <mail@sarbagyastha.com.np>
 Rody Davis Jr <rody.davis.jr@gmail.com>
 Robin Jespersen <info@unitedpartners.de>
+Jefferson Quesado <jeff.quesado@gmail.com>

bin/flutter

@@ -150,6 +150,15 @@ DART_SDK_PATH="$FLUTTER_ROOT/bin/cache/dart-sdk"
 DART="$DART_SDK_PATH/bin/dart"
 PUB="$DART_SDK_PATH/bin/pub"
 
+# If running over git-bash, overrides the default UNIX
+# executables with win32 executables
+case "$(uname -s)" in
+  MINGW32*)
+    DART="$DART.exe"
+    PUB="$PUB.bat"
+    ;;
+esac
+
 # Test if running as superuser – but don't warn if running within Docker
 if [[ "$EUID" == "0" && ! -f /.dockerenv ]]; then
   echo "   Woah! You appear to be trying to run flutter as root."

bin/internal/update_dart_sdk.sh

@@ -50,6 +50,10 @@ if [ ! -f "$ENGINE_STAMP" ] || [ "$ENGINE_VERSION" != `cat "$ENGINE_STAMP"` ]; t
       DART_ZIP_NAME="dart-sdk-linux-x64.zip"
       IS_USER_EXECUTABLE="-perm /u+x"
       ;;
+    MINGW32*)
+      DART_ZIP_NAME="dart-sdk-windows-x64.zip"
+      IS_USER_EXECUTABLE="-perm /u+x"
+      ;;
     *)
       echo "Unknown operating system. Cannot install Dart SDK."
       exit 1