# Use `golines` to format Go's long line code

VS Code already does a great work to use `gofmt` to auto format your go code, but it won't format your lone line go code. To do it you could install a tool named `golines`.

## Steps:

1, Install `golines`: `go get -u github.com/segmentio/golines`

2, Open VS code, install the plugin named "Run on Save"

![Screen Shot 2021-04-15 at 5.50.28 PM.png](https://cdn.hashnode.com/res/hashnode/image/upload/v1618523434482/HUGkXKfCT.png)

3, Go to VS Code settings, search "Run on Save", then click "Edit in settings.json"

![Screen Shot 2021-04-15 at 5.51.03 PM.png](https://cdn.hashnode.com/res/hashnode/image/upload/v1618523468428/w70g2IcSK.png)

4, For the `emeraldwalk.runonsave` 's bracket, add `commands` like below:
```javascript
"emeraldwalk.runonsave": {
    "commands": [
        {
            "match": "\\.go$",
            "cmd": "golines ${file} -m 79 -w"
        }
    ]
}
```
You can twist the parameters above, for example,`-m 79` means if find a line has more than 79 chars, run `golines` to break/format it. More parameter please check the reference below.


## Reference
* [golines github repo](https://github.com/segmentio/golines)