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Fix flag completion (#1438)

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* Fix flag completion

The flag completion functions should not be stored in the root cmd.
There is no requirement that the root cmd should be the same when
`RegisterFlagCompletionFunc` was called. Storing the flags there does
not work when you add the the flags to your cmd struct before you add the
cmd to the parent/root cmd. The flags can no longer be found in the rigth
place when the completion command is called and thus the flag completion
does not work.

Also #1423 claims that this would be thread safe but we still have a map
which will fail when accessed concurrently. To truly fix this issue use a
RWMutex.

Fixes #1437
Fixes #1320

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

* Fix trailing whitespaces in fish comp scripts

Signed-off-by: Paul Holzinger <pholzing@redhat.com>
This commit is contained in:
Paul Holzinger
2021-07-02 17:25:47 +02:00
committed by GitHub
parent 07861c800d
commit de187e874d
5 changed files with 54 additions and 13 deletions
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3
command.go
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@ -142,9 +142,6 @@ type Command struct {
// that we can use on every pflag set and children commands
globNormFunc func(f *flag.FlagSet, name string) flag.NormalizedName
//flagCompletionFunctions is map of flag completion functions.
flagCompletionFunctions map[*flag.Flag]func(cmd *Command, args []string, toComplete string) ([]string, ShellCompDirective)
// usageFunc is usage func defined by user.
usageFunc func(*Command) error
// usageTemplate is usage template defined by user.