x/tools/gopls: codeAction returns invalid text edits

[myitcv]

What version of Go are you using (go version)?

$ go version
go version devel +03bb3e9ad1 Wed Oct 16 06:29:51 2019 +0000 linux/amd64
$ go list -m golang.org/x/tools
golang.org/x/tools v0.0.0-20191107235519-f7ea15e60b12
$ go list -m golang.org/x/tools/gopls
golang.org/x/tools/gopls v0.1.8-0.20191107235519-f7ea15e60b12

Does this issue reproduce with the latest release?

Yes

What operating system and processor architecture are you using (go env)?

go env Output

$ go env
GO111MODULE="on"
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/myitcv/.cache/go-build"
GOENV="/home/myitcv/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/home/myitcv/gostuff"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/home/myitcv/gos"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/home/myitcv/gos/pkg/tool/linux_amd64"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/home/myitcv/gostuff/src/github.com/myitcv/govim/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build117667193=/tmp/go-build -gno-record-gcc-switches"

What did you do?

Input file is:

    




package main






func main() {
	println("Hello, world!")
}






      

• run codeAction
• apply edits
• run formatting
• apply edits

What did you expect to see?

package main

func main() {
	println("Hello, world!")
}

What did you see instead?

   




package 





func main() {
	println("Hello, world!")
}






   

gopls log file:
fail.log

---

cc @stamblerre @heschik

[gopherbot]

Change https://golang.org/cl/206145 mentions this issue: internal/lsp/source: start import diffs at byte 0