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cmd/go: go help mod prints unclear error message on bad mod subcommand #33153

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ALTree opened this issue Jul 17, 2019 · 2 comments
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cmd/go: go help mod prints unclear error message on bad mod subcommand #33153

ALTree opened this issue Jul 17, 2019 · 2 comments
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FrozenDueToAge modules NeedsFix The path to resolution is known, but the work has not been done.
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Go1.14

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@ALTree
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ALTree commented Jul 17, 2019 

$ go version
go version devel +0cadf40f4c Tue Jul 16 22:31:35 2019 +0000 windows/amd64

go help mod prints:

Go mod provides access to operations on modules.

[...]

Use "go help mod <command>" for more information about a command.

go help mod <command> works as advertised, except when <command> is not a valid mod command; in that case this bizarre error message is printed:

$ go help mod bad
go help mod bad: unknown help topic. Run ' mod'.

It's not clear what it means by Run ' mod', but it doesn't look right.
@ALTree ALTree added NeedsFix The path to resolution is known, but the work has not been done. modules labels Jul 17, 2019
@ALTree ALTree added this to the Go1.14 milestone Jul 17, 2019
@jmartin82 jmartin82 mentioned this issue Jul 23, 2019
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Change https://golang.org/cl/187217 mentions this issue: cmd/go: Fix the suggested command on the help error message

@jmartin82
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Hi,

This issue is not only affecting mod subcommands, but it's also affecting all of them.

For example:

go help vet a

go help vet a: unknown help topic. Run ' vet'.

I've added a CL with the fix.

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FrozenDueToAge modules NeedsFix The path to resolution is known, but the work has not been done.
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Go1.14
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cmd/go: keep "go help" in unknown topic suggestion jmartin82/go
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