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@@ -105,31 +105,35 @@ Android.bp files can contain C-style multiline `/* */` and C++ style single-line
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### Types
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-Variables and properties are strongly typed, variables dynamically based on the
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-first assignment, and properties statically by the module type. The supported
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-types are:
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+Variables and properties are strongly typed. Variables are dynamically typed
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+based on the first assignment, and properties are statically typed by the
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+module type. The supported types are:
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* Bool (`true` or `false`)
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* Integers (`int`)
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* Strings (`"string"`)
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* Lists of strings (`["string1", "string2"]`)
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* Maps (`{key1: "value1", key2: ["value2"]}`)
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-Maps may values of any type, including nested maps. Lists and maps may have
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-trailing commas after the last value.
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+Maps may contain values of any type, including nested maps. Lists and maps may
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+have trailing commas after the last value.
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Strings can contain double quotes using `\"`, for example `"cat \"a b\""`.
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### Operators
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-Strings, lists of strings, and maps can be appended using the `+` operator.
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-Integers can be summed up using the `+` operator. Appending a map produces the
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-union of keys in both maps, appending the values of any keys that are present
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-in both maps.
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+The `+` operator:
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+* Sums integers.
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+* Concatenates strings and lists.
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+* Produces the union of maps.
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+
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+Concatenating maps produces a map whose keys are the union of the given maps'
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+keys, and whose mapped values are the union of the given maps' corresponding
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+mapped values.
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### Defaults modules
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-A defaults module can be used to repeat the same properties in multiple modules.
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-For example:
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+A `defaults` module can be used to repeat the same properties in multiple
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+modules. For example:
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```
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cc_defaults {
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