The default completion is useful also in cases where there are no
subcommands, for example to provide completion for flags, and custom
completions for their values.
But when there are no subcommands, make it hidden. Simply adding it
non-hidden would result in a help section to be added just for it which
is just noise: the completion command is not the primary functionality
of the program, yet it would be prominently displayed in help output. It
would also get included among argument completions, which could be a
source of confusion.
When a command has set DisableFlagParsing=true, it means Cobra should
not be handling flags for that command but should let the command
handle them itself. In fact, Cobra normally won't have been told at all
about flags for this command.
Not knowing about the flags of the command also implies that Cobra
cannot perform flag completion as it does not have the necessary info.
This commit still tries to do flag name completion, but when
DisableFlagParsing==true, it continues on so that ValidArgsFunction will
be called; this allows the program to handle completion for its own
flags when DisableFlagParsing==true.
Signed-off-by: Marc Khouzam <marc.khouzam@montreal.ca>
* 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#1437Fixes#1320
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
* Fix trailing whitespaces in fish comp scripts
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
zsh is now the default on Mac OS, but the $_fpath version of the installation instructions are likely to put the completion in a strange location that the user might not expect (e.g. an oh-my-zsh plugin's function directory). So, since Mac OS seems to (as far as I can tell) provide a stable location, this PR recommends using that path instead.
If the interspersed option is set false and one arg is already set all
following arguments are counted as arg and not parsed as flags. Because
of that we should not offer flag completion. The same applies to arguments
followed after `--`.
Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
* Bash completion v2
This v2 version of bash completion is based on Go completions.
It also supports descriptions like the other shells.
Signed-off-by: Marc Khouzam <marc.khouzam@montreal.ca>
* Only consider matching completions for formatting
Signed-off-by: Marc Khouzam <marc.khouzam@montreal.ca>
* Use bash compV2 for the default completion command
Signed-off-by: Marc Khouzam <marc.khouzam@montreal.ca>
* Update comments that still referred to bash completion
Signed-off-by: Marc Khouzam <marc.khouzam@montreal.ca>
Fixes#1211
When handling ShellCompDirectiveNoSpace we must still properly handle
descriptions. To do so we cannot simply use 'compadd', but must use
zsh's '_describe' function.
Also, when handling ShellCompDirectiveNoSpace we cannot assume that
only a single completion will be given to the script. In fact,
ValidArgsFunction can return multiple completions, even if they don't
match the 'toComplete' argument prefix. Therefore, we cannot use the
number of completions received in the completion script to determine
if we should activate the "no space" directive. Instead, we can leave
it all to the '_describe' function.
Fixes#1212
When handling ShellCompDirectiveNoFileComp we cannot base ourself on
the script receiving no valid completion. In fact,
ValidArgsFunction can return multiple completions, even if they don't
match the 'toComplete' argument prefix at all. Therefore, we cannot use
the number of completions received by the completion script to determine
if we should activate the "no file comp" directive. Instead, we can
check if the '_describe' function has found any completions.
Finally, it is important for the script to return the return code of the
called zsh functions (_describe, _arguments). This tells zsh if
completions were found or not, which if not, will trigger different
matching attempts, such as matching what the user typed with the the
content of possible completions (instead of just as the prefix).
Signed-off-by: Marc Khouzam <marc.khouzam@montreal.ca>
Flag definitions like `-asd` are not handled correctly by
the custom completion logic. They should be treated as
multiple flags. For details refer to #1257.
Fixes#1257
Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
Make it easier for programs to provide shell completion by creating
the 'completion' command automatically.
If a 'completion' command is already provided by the program, Cobra
will use that one instead.
Signed-off-by: Marc Khouzam <marc.khouzam@montreal.ca>
