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x/tools/gopls: incorrectly suggests internal/singleflight completion #64083

Open findleyr opened 10 months ago

findleyr commented 10 months ago

Reported from @seankhliao in slack: gopls reported internal/singleflight (from std) as a completion candidate, while not working in std.

Though related to unimported completion of standard library candidates, I think this is distinct from #63767. Specifically, I am suspicious of the 'fast path' unimported completion which looks at packages already in the import graph: https://cs.opensource.google/go/x/tools/+/master:gopls/internal/lsp/source/completion/completion.go;l=1695;drc=7f23bc81dc216f83d56b5256abc053109bf5c58b

@seankhliao can you go list -deps ./... | grep singleflight to confirm that this package is in your import graph?

seankhliao commented 10 months ago 
$ go list -deps ./... | grep singleflight
internal/singleflight
golang.org/x/sync/singleflight
gopls -vv -rpc.trace ``` [Trace - 13:39:54.119 PM] Sending request 'initialize - (1)'. 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Params: {} [Trace - 13:39:54.123 PM] Sending notification 'workspace/didChangeConfiguration'. Params: {"settings":{"gopls":{"gofumpt":true,"staticcheck":true,"templateExtensions":["gotmpl"]}}} [Trace - 13:39:54.123 PM] Sending notification 'workspace/didChangeConfiguration'. Params: {"settings":{"gopls":{"gofumpt":true,"staticcheck":true,"templateExtensions":["gotmpl"]}}} [Trace - 13:39:54.123 PM] Sending notification 'textDocument/didOpen'. Params: {"textDocument":{"version":0,"languageId":"go","text":"package main\n\nfunc main() {}\n","uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"}} [Trace - 13:39:54.123 PM] Received request 'window/workDoneProgress/create - (1)'. Params: {"token":"2702157711607756256"} [Trace - 13:39:54.125 PM] Sending request 'textDocument/semanticTokens/full - (2)'. Params: {"textDocument":{"uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"}} [Trace - 13:39:54.125 PM] Sending response 'window/workDoneProgress/create - (1)' in 2ms. 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Params: {"textDocument":{"version":38,"uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"},"contentChanges":[{"range":{"end":{"line":5,"character":20},"start":{"line":5,"character":20}},"rangeLength":0,"text":"."}]} [Trace - 13:40:01.144 PM] Sending request 'textDocument/completion - (21)'. Params: {"context":{"triggerCharacter":".","triggerKind":2},"textDocument":{"uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"},"position":{"line":5,"character":21}} [Trace - 13:40:01.146 PM] Received response 'textDocument/completion - (21)' in 1ms. Result: {"isIncomplete":true,"items":[{"label":"Group","kind":22,"detail":"struct{...}","documentation":{"kind":"markdown","value":"Group represents a class of work and forms a namespace in which units of work can be executed with duplicate suppression.\n"},"preselect":true,"sortText":"00000","filterText":"Group","insertTextFormat":2,"textEdit":{"range":{"start":{"line":5,"character":21},"end":{"line":5,"character":21}},"newText":"Group"}},{"label":"Result","kind":22,"detail":"struct{...}","documentation":{"kind":"markdown","value":"Result holds the results of Do, so they can be passed on a channel.\n"},"sortText":"00001","filterText":"Result","insertTextFormat":2,"textEdit":{"range":{"start":{"line":5,"character":21},"end":{"line":5,"character":21}},"newText":"Result"}}]} [Trace - 13:40:01.165 PM] Received notification 'textDocument/publishDiagnostics'. Params: {"uri":"file:///home/arccy/code/mono/xxx/main.go","version":38,"diagnostics":[{"range":{"start":{"line":2,"character":7},"end":{"line":2,"character":7}},"severity":1,"source":"go list","message":"use of internal package internal/singleflight not allowed"},{"range":{"start":{"line":5,"character":22},"end":{"line":5,"character":22}},"severity":1,"source":"syntax","message":"expected selector or type assertion, found '}'"}]} [Trace - 13:40:01.340 PM] Sending notification '$/cancelRequest'. Params: {"id":18} [Trace - 13:40:01.341 PM] Sending request 'textDocument/semanticTokens/full - (22)'. Params: {"textDocument":{"uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"}} [Error - Received] 13:40:01.341 PM #22 semantictokens are disabled [Trace - 13:40:01.488 PM] Sending request 'textDocument/signatureHelp - (23)'. Params: {"textDocument":{"uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"},"position":{"line":5,"character":21}} [Trace - 13:40:01.489 PM] Received response 'textDocument/signatureHelp - (23)' in 0ms. Result: null [Trace - 13:40:01.489 PM] Received notification 'window/logMessage'. Params: {"type":1,"message":"2023/11/12 13:40:01 no signature help: cannot find an enclosing function\n\tposition=5:21\n"} [Trace - 13:40:02.096 PM] Sending request 'textDocument/signatureHelp - (24)'. Params: {"textDocument":{"uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"},"position":{"line":5,"character":21}} [Trace - 13:40:02.097 PM] Received response 'textDocument/signatureHelp - (24)' in 0ms. Result: null [Trace - 13:40:02.097 PM] Received notification 'window/logMessage'. Params: {"type":1,"message":"2023/11/12 13:40:02 no signature help: cannot find an enclosing function\n\tposition=5:21\n"} [Trace - 13:40:02.625 PM] Sending request 'textDocument/signatureHelp - (25)'. Params: {"textDocument":{"uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"},"position":{"line":5,"character":21}} [Trace - 13:40:02.626 PM] Received response 'textDocument/signatureHelp - (25)' in 0ms. Result: null [Trace - 13:40:02.626 PM] Received notification 'window/logMessage'. Params: {"type":1,"message":"2023/11/12 13:40:02 no signature help: cannot find an enclosing function\n\tposition=5:21\n"} [Trace - 13:40:02.725 PM] Sending notification 'textDocument/didChange'. Params: {"textDocument":{"version":39,"uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"},"contentChanges":[{"range":{"end":{"line":5,"character":21},"start":{"line":5,"character":21}},"rangeLength":0,"text":"G"}]} [Trace - 13:40:02.746 PM] Received notification 'textDocument/publishDiagnostics'. Params: {"uri":"file:///home/arccy/code/mono/xxx/main.go","version":39,"diagnostics":[{"range":{"start":{"line":2,"character":7},"end":{"line":2,"character":7}},"severity":1,"source":"go list","message":"use of internal package internal/singleflight not allowed"},{"range":{"start":{"line":5,"character":21},"end":{"line":5,"character":22}},"severity":1,"code":"UndeclaredImportedName","codeDescription":{"href":"https://pkg.go.dev/golang.org/x/tools/internal/typesinternal#UndeclaredImportedName"},"source":"compiler","message":"undefined: singleflight.G"}]} [Trace - 13:40:02.873 PM] Sending notification 'textDocument/didChange'. Params: {"textDocument":{"version":47,"uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"},"contentChanges":[{"range":{"end":{"line":5,"character":22},"start":{"line":5,"character":22}},"rangeLength":0,"text":"r"},{"range":{"end":{"line":5,"character":23},"start":{"line":5,"character":23}},"rangeLength":0,"text":"o"},{"range":{"end":{"line":5,"character":24},"start":{"line":5,"character":24}},"rangeLength":0,"text":"u"},{"range":{"end":{"line":5,"character":25},"start":{"line":5,"character":25}},"rangeLength":0,"text":"p"},{"range":{"end":{"line":5,"character":26},"start":{"line":5,"character":21}},"rangeLength":5,"text":""},{"range":{"end":{"line":5,"character":21},"start":{"line":5,"character":21}},"rangeLength":0,"text":""},{"range":{"end":{"line":5,"character":21},"start":{"line":5,"character":21}},"rangeLength":0,"text":"Group"},{"range":{"end":{"line":5,"character":26},"start":{"line":5,"character":26}},"rangeLength":0,"text":""}]} [Trace - 13:40:02.897 PM] Received notification 'textDocument/publishDiagnostics'. Params: {"uri":"file:///home/arccy/code/mono/xxx/main.go","version":47,"diagnostics":[{"range":{"start":{"line":2,"character":7},"end":{"line":2,"character":7}},"severity":1,"source":"go list","message":"use of internal package internal/singleflight not allowed"},{"range":{"start":{"line":5,"character":8},"end":{"line":5,"character":26}},"severity":1,"code":"NotAnExpr","codeDescription":{"href":"https://pkg.go.dev/golang.org/x/tools/internal/typesinternal#NotAnExpr"},"source":"compiler","message":"singleflight.Group (type) is not an expression"}]} [Trace - 13:40:02.926 PM] Sending notification '$/cancelRequest'. Params: {"id":22} [Trace - 13:40:02.926 PM] Sending request 'textDocument/semanticTokens/full - (26)'. Params: {"textDocument":{"uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"}} [Error - Received] 13:40:02.926 PM #26 semantictokens are disabled [Trace - 13:40:03.036 PM] Sending request 'textDocument/signatureHelp - (27)'. Params: {"textDocument":{"uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"},"position":{"line":5,"character":26}} [Trace - 13:40:03.036 PM] Received response 'textDocument/signatureHelp - (27)' in 0ms. Result: null [Trace - 13:40:03.037 PM] Received notification 'window/logMessage'. Params: {"type":1,"message":"2023/11/12 13:40:03 no signature help: cannot find an enclosing function\n\tposition=5:26\n"} [Trace - 13:40:03.816 PM] Sending request 'textDocument/codeAction - (28)'. Params: {"context":{"only":["source.organizeImports"]},"textDocument":{"uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"},"range":{"end":{"line":5,"character":25},"start":{"line":5,"character":25}}} [Trace - 13:40:03.817 PM] Received response 'textDocument/codeAction - (28)' in 1ms. Result: null [Trace - 13:40:03.818 PM] Sending request 'textDocument/formatting - (29)'. Params: {"textDocument":{"uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"},"options":{"tabSize":8,"insertSpaces":true}} [Trace - 13:40:03.819 PM] Received response 'textDocument/formatting - (29)' in 0ms. Result: [{"range":{"start":{"line":5,"character":0},"end":{"line":5,"character":8}},"newText":"\t"}] [Trace - 13:40:03.820 PM] Sending notification 'textDocument/didChange'. Params: {"textDocument":{"version":48,"uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"},"contentChanges":[{"range":{"end":{"line":5,"character":8},"start":{"line":5,"character":0}},"rangeLength":8,"text":"\t"}]} [Trace - 13:40:03.843 PM] Received notification 'textDocument/publishDiagnostics'. Params: {"uri":"file:///home/arccy/code/mono/xxx/main.go","version":48,"diagnostics":[{"range":{"start":{"line":2,"character":7},"end":{"line":2,"character":7}},"severity":1,"source":"go list","message":"use of internal package internal/singleflight not allowed"},{"range":{"start":{"line":5,"character":1},"end":{"line":5,"character":19}},"severity":1,"code":"NotAnExpr","codeDescription":{"href":"https://pkg.go.dev/golang.org/x/tools/internal/typesinternal#NotAnExpr"},"source":"compiler","message":"singleflight.Group (type) is not an expression"}]} [Trace - 13:40:03.843 PM] Sending notification 'textDocument/didSave'. Params: {"textDocument":{"uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"}} [Trace - 13:40:04.022 PM] Sending notification '$/cancelRequest'. Params: {"id":26} [Trace - 13:40:04.022 PM] Sending request 'textDocument/semanticTokens/full - (30)'. Params: {"textDocument":{"uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"}} [Error - Received] 13:40:04.022 PM #30 semantictokens are disabled [Trace - 13:40:04.166 PM] Sending request 'textDocument/signatureHelp - (31)'. Params: {"textDocument":{"uri":"file:\/\/\/home\/arccy\/code\/mono\/xxx\/main.go"},"position":{"line":5,"character":18}} [Trace - 13:40:04.167 PM] Received response 'textDocument/signatureHelp - (31)' in 1ms. Result: null [Trace - 13:40:04.167 PM] Received notification 'window/logMessage'. Params: {"type":1,"message":"2023/11/12 13:40:04 no signature help: cannot find an enclosing function\n\tposition=5:18\n"} [Trace - 13:40:04.973 PM] Received notification 'textDocument/publishDiagnostics'. Params: {"uri":"file:///home/arccy/code/mono/xxx/main.go","version":48,"diagnostics":[{"range":{"start":{"line":2,"character":7},"end":{"line":2,"character":7}},"severity":1,"source":"go list","message":"use of internal package internal/singleflight not allowed"},{"range":{"start":{"line":5,"character":1},"end":{"line":5,"character":19}},"severity":1,"code":"NotAnExpr","codeDescription":{"href":"https://pkg.go.dev/golang.org/x/tools/internal/typesinternal#NotAnExpr"},"source":"compiler","message":"singleflight.Group (type) is not an expression"}]} [Trace - 13:40:06.333 PM] Sending request 'shutdown - (32)'. Params: [Trace - 13:40:06.334 PM] Received response 'shutdown - (32)' in 1ms. Result: null [Trace - 13:40:06.334 PM] Received notification 'window/logMessage'. Params: {"type":3,"message":"2023/11/12 13:40:06 Shutdown session\n\tshutdown_session=1\n"} [Trace - 13:40:06.358 PM] Sending notification 'exit'. Params: ```
nvim lsp log ``` [START][2023-11-12 13:39:54] LSP logging initiated [ERROR][2023-11-12 13:39:54] ...lsp/handlers.lua:535 "2023/11/12 13:39:54 no signature help: cannot find an enclosing function\n\tposition=0:0\n" [ERROR][2023-11-12 13:39:55] ...lsp/handlers.lua:535 "2023/11/12 13:39:55 no signature help: cannot find an enclosing function\n\tposition=3:8\n" [ERROR][2023-11-12 13:39:56] ...lsp/handlers.lua:535 "2023/11/12 13:39:56 no signature help: cannot find an enclosing function\n\tposition=3:9\n" [ERROR][2023-11-12 13:39:57] ...lsp/handlers.lua:535 "2023/11/12 13:39:57 no signature help: cannot find an enclosing function\n\tposition=3:14\n" [ERROR][2023-11-12 13:39:58] ...lsp/handlers.lua:535 "2023/11/12 13:39:58 no signature help: cannot find an enclosing function\n\tposition=3:14\n" [ERROR][2023-11-12 13:39:58] ...lsp/handlers.lua:535 "2023/11/12 13:39:58 no signature help: cannot find an enclosing function\n\tposition=5:20\n" [ERROR][2023-11-12 13:40:00] ...lsp/handlers.lua:535 "2023/11/12 13:40:00 no signature help: cannot find an enclosing function\n\tposition=5:19\n" [ERROR][2023-11-12 13:40:01] ...lsp/handlers.lua:535 "2023/11/12 13:40:01 no signature help: cannot find an enclosing function\n\tposition=5:21\n" [ERROR][2023-11-12 13:40:02] ...lsp/handlers.lua:535 "2023/11/12 13:40:02 no signature help: cannot find an enclosing function\n\tposition=5:21\n" [ERROR][2023-11-12 13:40:02] ...lsp/handlers.lua:535 "2023/11/12 13:40:02 no signature help: cannot find an enclosing function\n\tposition=5:21\n" [ERROR][2023-11-12 13:40:03] ...lsp/handlers.lua:535 "2023/11/12 13:40:03 no signature help: cannot find an enclosing function\n\tposition=5:26\n" [ERROR][2023-11-12 13:40:04] ...lsp/handlers.lua:535 "2023/11/12 13:40:04 no signature help: cannot find an enclosing function\n\tposition=5:18\n" ```

recording:

https://github.com/golang/go/assets/11343221/a2fc495e-e1dd-4213-95ce-e02634444b4f

findleyr commented 8 months ago

This can wait until v0.16.0,