Add singleton to indicate which shell version is requesting completion candidates#690
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…n candidates Create a `String?` singleton named `CompletionShell.requestingVersion` that indicates which shell version is requesting completion candidates. It will be set to the correct value while a Swift custom completion function is executing to offer completions for a word from a command line (e.g., while `customCompletion` from `@Option(completion: .custom(customCompletion))` executes). Otherwise, it will be set to `nil`. The requesting shell version is communicated to the Swift app via an environment variable named `SAP_SHELL_VERSION`, which is exported by each of the generated completion scripts. Improve some nearby DocC. Resolve apple#689 Signed-off-by: Ross Goldberg <484615+rgoldberg@users.noreply.github.com>
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Add singleton to indicate which shell version is requesting completion candidates.
Create a
String?singleton namedCompletionShell.requestingVersionthat indicates which shell version is requesting completion candidates.It will be set to the correct value while a Swift custom completion function is executing to offer completions for a word from a command line (e.g., while
customCompletionfrom@Option(completion: .custom(customCompletion))executes). Otherwise, it will be set tonil.The requesting shell version is communicated to the Swift app via an environment variable named
SAP_SHELL_VERSION, which is exported by each of the generated completion scripts.Improve some nearby DocC.
Resolve #689
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