x/tools/gopls: organizeImports adds package line when fixing code on line after existing package line

[zikaeroh]

Please answer these questions before submitting your issue. Thanks!

What did you do?

Had code like:

package main
var x = fmt.Sprintf("")

Then saved in VS Code, which does formatting and fixes.

What did you expect to see?

package main

import "fmt"

var x = fmt.Sprintf("")

What did you see instead?

package main

import "fmt"
package main
var x = fmt.Sprintf("")

If there's an empty line after the package line, things work fine.

LSP logs: https://gist.github.com/zikaeroh/3618c7cf2a982ade74dc83a89de5da5c

[
    {
        "title": "Organize Imports",
        "kind": "source.organizeImports",
        "edit": {
            "documentChanges": [
                {
                    "textDocument": {
                        "version": 26,
                        "uri": "file:///home/jake/testproj/badline/main.go"
                    },
                    "edits": [
                        {
                            "range": {
                                "start": {
                                    "line": 0,
                                    "character": 0
                                },
                                "end": {
                                    "line": 0,
                                    "character": 0
                                }
                            },
                            "newText": "package main\n\nimport \"fmt\"\n"
                        }
                    ]
                }
            ]
        }
    }
]

Build info

golang.org/x/tools/gopls master
    golang.org/x/tools/gopls@v0.0.0-20200501205727-542909fd9944 h1:20iD9K4bJEslXfAAA7dvM3nxxnR5TtBYjsLg24tqBiY=
    github.com/BurntSushi/toml@v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
    github.com/sergi/go-diff@v1.1.0 h1:we8PVUC3FE2uYfodKH/nBHMSetSfHDR6scGdBi+erh0=
    golang.org/x/mod@v0.2.0 h1:KU7oHjnv3XNWfa5COkzUifxZmxp1TyI7ImMXqFxLwvQ=
    golang.org/x/sync@v0.0.0-20190911185100-cd5d95a43a6e h1:vcxGaoTs7kV8m5Np9uUNQin4BrLOthgV7252N8V+FwY=
    golang.org/x/tools@v0.0.0-20200501205727-542909fd9944 h1:H2fcUfqnOlhuExePgcxfMRf98XwAWOF2pqkJTFTc2z0=
    golang.org/x/xerrors@v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
    honnef.co/go/tools@v0.0.1-2020.1.3 h1:sXmLre5bzIR6ypkjXCDI3jHPssRhc8KD/Ome589sc3U=
    mvdan.cc/xurls/v2@v2.1.0 h1:KaMb5GLhlcSX+e+qhbRJODnUUBvlw01jt4yrjFIHAuA=

Go info

go version go1.14.2 linux/amd64

[gopherbot]

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