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x/tools/cmd/gopls: zero-effect deltas returned in response to textDocument/formatting #31119

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myitcv opened this issue Mar 28, 2019 · 1 comment
Closed

x/tools/cmd/gopls: zero-effect deltas returned in response to textDocument/formatting #31119

myitcv opened this issue Mar 28, 2019 · 1 comment
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Documentation FrozenDueToAge gopls Issues related to the Go language server, gopls.
Milestone
Unreleased

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@myitcv
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myitcv commented Mar 28, 2019

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

$ go version
go version go1.12.1 linux/amd64
$ go list -m golang.org/x/tools
golang.org/x/tools v0.0.0-20190328030505-8f05a32dce9f

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
GOARCH="amd64"
GOBIN="/home/myitcv/gostuff/src/github.com/myitcv/govim/.bin"
GOCACHE="/home/myitcv/.cache/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/myitcv/gostuff"
GOPROXY=""
GORACE=""
GOROOT="/home/myitcv/gos"
GOTMPDIR=""
GOTOOLDIR="/home/myitcv/gos/pkg/tool/linux_amd64"
GCCGO="gccgo"
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-build709084862=/tmp/go-build -gno-record-gcc-switches"

What did you do?

Call textDocument/formatting to format the following:

package govim

const ( x = 5
)

What did you expect to see?

A []TextEdit result that only contains non-zero-effect deltas.

What did you see instead?

A []TextEdit result that contained one zero-effect delta:

[]protocol.TextEdit{
    {
        Range: protocol.Range{
            Start: protocol.Position{Line:2, Character:0},
            End:   protocol.Position{Line:3, Character:0},
        },
        NewText: "",
    },
    {
        Range: protocol.Range{
            Start: protocol.Position{Line:3, Character:0},
            End:   protocol.Position{Line:4, Character:0},
        },
        NewText: "",
    },
    {
        Range: protocol.Range{
            Start: protocol.Position{Line:4, Character:0},
            End:   protocol.Position{Line:4, Character:0},
        },
        NewText: "const (\n",
    },
    {
        Range: protocol.Range{
            Start: protocol.Position{Line:4, Character:0},
            End:   protocol.Position{Line:4, Character:0},
        },
        NewText: "\tx = 5\n",
    },
    {
        Range: protocol.Range{
            Start: protocol.Position{Line:4, Character:0},
            End:   protocol.Position{Line:4, Character:0},
        },
        NewText: ")\n",
    },
    {
        Range: protocol.Range{
            Start: protocol.Position{Line:4, Character:0},
            End:   protocol.Position{Line:4, Character:0},
        },
        NewText: "",
    },
}

The last TextEdit implies zero delta.

cc @stamblerre
@myitcv myitcv added the gopls Issues related to the Go language server, gopls. label Mar 28, 2019
@gopherbot gopherbot added this to the Unreleased milestone Mar 28, 2019
@myitcv
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myitcv commented Mar 28, 2019

This is my mistake. The last TextEdit is a blank line at the end of the file.

@myitcv myitcv closed this as completed Mar 28, 2019
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