'undefined' errors during compilation

[rabellamy]

I am receiving the below 'undefined' errors when trying to complile a new Cobra app:

$ go build
# github.com/spf13/cobra
../../spf13/cobra/command.go:419: fs.ShorthandLookup undefined (type *pflag.FlagSet has no field or method ShorthandLookup)
../../spf13/cobra/command.go:1124: c.lflags.SortFlags undefined (type *pflag.FlagSet has no field or method SortFlags)
../../spf13/cobra/command.go:1124: c.Flags().SortFlags undefined (type *pflag.FlagSet has no field or method SortFlags)
../../spf13/cobra/command.go:1281: c.parentsPflags.SortFlags undefined (type *pflag.FlagSet has no field or method SortFlags)

I was able to narrow it down to two commits using git-bisect:

Debugging with git-bisect

• good: 6e91dde
• bad: 4cdb38c

fs.ShorthandLookup undefined (type *pflag.FlagSet has no field or method ShorthandLookup)

4061f41c9aacfb1d66b941fefab8a3e900964217 is the first bad commit
commit 4061f41c9aacfb1d66b941fefab8a3e900964217
Author: Albert Nigmatzianov <albertnigma@gmail.com>
Date:   Fri May 5 08:08:38 2017 +0200

    Use pflag.ShorthandLookup

:100644 100644 bb26d200c0ffa2326dd732fd9eb701c589cdac02 4bf1e241471d9b41716301c85af5b474865d45d9 M      command.go

c.lflags.SortFlags undefined (type *pflag.FlagSet has no field or method SortFlags)

6202b5942b8f31501d14d8cb192790d8a10302f4 is the first bad commit
commit 6202b5942b8f31501d14d8cb192790d8a10302f4
Author: Albert Nigmatzianov <albertnigma@gmail.com>
Date:   Wed Apr 5 18:44:50 2017 +0200

    Refactor flags mechanisms

    I think It's more obvious now to understand the inheritance of flags.

    Fix #403
    Fix #404

    Performance improvements:
    benchmark                     old ns/op     new ns/op     delta
    BenchmarkInheritedFlags-4     6536          5595          -14.40%
    BenchmarkLocalFlags-4         3193          3235          +1.32%

    benchmark                     old allocs     new allocs     delta
    BenchmarkInheritedFlags-4     49             39             -20.41%
    BenchmarkLocalFlags-4         23             21             -8.70%

    benchmark                     old bytes     new bytes     delta
    BenchmarkInheritedFlags-4     2040          1000          -50.98%
    BenchmarkLocalFlags-4         1008          544           -46.03%

:100644 100644 46887fd7d141d2904137dd0d40fe103bd3b2aada 6c443e7a0025fbc6b858de103381a061275b6612 M      cobra_test.go
:100644 100644 50bd3bb78464f7752643e5e6077574ec37215bbd a4366562f623b6b8b7bcdbe1d6958d9d643d6723 M      command.go

In the meantime I have been developing off of a3cd8ab.

[n10v]

Hello!
Try to do go get -u github.com/spf13/pflag or if you use vendoring, update github.com/spf13/pflag package.

[rabellamy]

@BoGeM: Thanks! Will Cobra be having any formal releases in the future?

[n10v]

Hopefully. More info you can find in #259 and #440.