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Predictive completion not working with completion scripts generated by the cobra library #24
Description
Prerequisites
- Write a descriptive title.
- Make sure you are able to repro it on the latest version
- Search the existing issues.
Steps to reproduce
- Import the CompletionPredictor module with Import-Module -Name CompletionPredictor
- Set the PredictionSource option to HistoryAndPlugin with Set-PSReadLineOption -PredictionSource HistoryAndPlugin
- Generate and execute a cobra-generated completion script (e.g., kubectl completion powershell | Out-String | Invoke-Expression)
- Type a command that uses the completion script (e.g., kubectl get pods) and try to use predictive completion.
Expected behavior
~ ❯ kubectl get
> kubectl get pods [Completion]
> kubectl get csr [Completion]
> kubectl get nodes [Completion]
> ...Actual behavior
~ ❯ kubectl get
> kubectl get pods [History]Error details
No response
Environment data
Name Value
---- -----
PSVersion 7.3.4
PSEdition Core
GitCommitId 7.3.4
OS Microsoft Windows 10.0.19045
Platform Win32NT
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
WSManStackVersion 3.0Version
0.1.0
Visuals
No response
Activity
Daydreamer-riri commentedon Aug 5, 2024
Hi Dongbo Wang (@daxian-dbw), currently, all custom completions and executable files do not prompt. Is there a way to achieve this functionality?
daxian-dbw commentedon Aug 5, 2024
Unfortunately, the completion for native commands doesn't work with completion predictor today because they are too slow.
For a predictor to work with PSReadLine today, it needs to return results within 20ms, which is impossibly for most of native command completers. We have a work item in PSReadLine to allow longer timeout by separating the prediction rendering from the user typing rendering, but we haven't got to it yet.
Daydreamer-riri commentedon Aug 15, 2024
Thanks for your reply! I've just seen the latest vscode terminal integration do something similar, but I'm using Windows Terminal more often than not.
nebula-it commentedon Jan 27, 2026
Any update on that work? For now is it possible to just extend the 20ms time window (or make it customizable)