# LibTmux.FSharp.TmuxFailure.|MayHaveRun|_|

- **Module:** LibTmux.FSharp
- **Package:** LibTmux.FSharp
- **Language:** F#
- **Kind:** function
- **Source:** https://github.com/libtmux/libtmux-dotnet/blob/cf34b255c896d19a97e7d7fabea58609c916012d/src/LibTmux.FSharp/Library.fsi#L71
- **Page:** https://libtmux.org/en/fsharp/latest/reference/libtmux-fsharp-tmuxfailure-mayhaverun-_/

```
val |MayHaveRun|_|): error: exn -> exn option
```

Matches a failure, or a cancellation, after which tmux may already have acted.

## Parameters

- `error` (`exn`)