Confirmed on NetBSD: The `ls -o` option groups. I tested `ls -gon` and
it didn't give an error.
It's quite suspect that this one option couldn't be grouped, so I'm
assuming this was a typo.
`gh` doesn't write its errors to stderr and doesn't exit with a non-zero status
code in case of failure. The completions are short enough that buffering them
isn't a huge deal.
This cuts down `__fish_git_using_command` calls from 75 to 68, saving
some time in the common case.
(it would be possible to remove the check from
`__fish_git_stash_using_command` now, but that's brittle and it's one
call, so it's not a big issue)
This checked the locale, but did so in a way that's fundamentally
broken:
1. $LANG isn't the only variable ($LC_ALL and $LC_CTYPE)
2. Even if $LANG is set that doesn't mean it's actually working
We could add a `status is-multibyte` here to figure out if we have a
multibyte locale?
But instead, since this is dealing with adding an ellipsis, let's just
add it to `string ellipsize`.
One slight difference is that shortening the branch now counts the ellipsis width.
I.e. assuming the branch is "long-branch-name"
```fish
set -g __fish_git_prompt_shorten_branch_len 8
```
might now print "long-br…" instead of "long-bra…". This is nicer because we can now give the actual maximum width.
The alternative is to add a "--exclusive" option to "string ellipsize" that doesn't count the ellipsis width. So `string ellipsize --char "..." --max 8" long-branch-name` might result in "long-bra...", which is 11 wide.
This is essentially the inverse of `string pad`.
Where that adds characters to get up to the specified width,
this adds an ellipsis to a string if it goes over a specific maximum width.
The char can be given, but defaults to our ellipsis string.
("…" if the locale can handle it and "..." otherwise)
If the ellipsis string is empty, it just truncates.
For arguments given via argv, it goes line-by-line,
because otherwise length makes no sense.
If "--no-newline" is given, it adds an ellipsis instead and removes all subsequent lines.
Like pad and `length --visible`, it goes by visible width,
skipping recognized escape sequences, as those have no influence on width.
The default target width is the shortest of the given widths that is non-zero.
If the ellipsis is already wider than the target width,
we truncate instead. This is safer overall, so we don't e.g. move into a new line.
This is especially important given our default ellipsis might be width 3.
pipenv switched from older click-completion package to new built-in completions
from click framework in v2021.11.9.
This command achieves compatibility with both, older and more recent versions.
`cargo search` can be used to quickly get crates matching a search string, so we
can pass the current token for first-arg completions to `cargo add` and `cargo
install` to `cargo search` to look up matches.
`cargo search` doesn't restrict itself to (nor prioritize for) prefix matches,
while fish will only display prefix matches (for dynamically generated
completions) so it's perfectly possible for `cargo search foo` to return 20
results none of which will successfully result in a completion, but for a
further-narrowed completion of `cargo install foob^I" to then result in
completions because `cargo search` ended up returning a prefix match for `foob`
while it didn't for `foo`.
The only other oob cargo subcommand that takes a crate name (that isn't the name
of a crate specified in `Cargo.toml`) is `cargo search` but there's no point in
providing completions to that... I think (it's possible to search for crate
"foo" in order to get its latest version number rather than its name, but I'm
not sure that's worth supporting).
This expands completions of `cargo^I` to list any commands named `cargo-xxx` as
cargo subcommands invokable as `cargo xxx` in addition to the default oob
subcommands cargo ships with.
(This is very similar to how git allows users to shim their own subcommands.)
NOTE: This would stay even after cargo someday moves to clap and generates or
even ships/installs an official machine-generated `cargo.fish` completions
script.
The old way of generating cargo completions no longer work, so we need
to manually maintain the completions until clap completions support[1].
[1]: https://github.com/clap-rs/clap/issues/3166
This used `realpath -eq`, which for GNU realpath:
1. Suppresses "most error messages" (-q)
2. Requires that all parts exist (rather than allowing the last not
to)
Since we don't actually need a real path here, just filter.
Fixes#9099
* added completions for sad and added note in changelog
* ran fish_indent on completion file
* split -h and --help into two distinct completion options
A recenty commit was loathe to assume the unicode ellipsis character
was safe so just used '..' instead. However I noticed we actually
already do use that character elsehwere in the completions.
So, just make both spots try to somewhat carefully use it.
We do this same `string match` check on LANG in fish_job_summary.fish
When adding a VLAN-enabled interface, it is named like enp0s31f6.100@enp0s31f6
with the physical interface being appended behind an @.
But subsequent ip commands operate on the interface name without this suffix,
so it needs to be removed when completing interface names in __fish_ip_device
These should be friendlier, but aren't as pedantically accurate.
I think the term "index" is terrible and much prefer "staging area".
Also "rev-parse" simply must be believed to be seen, it can't be
described in a single paragraph. (did you know you can use `git
rev-parse --parseopt` as a replacement for `getopt` in arbitrary
shell scripts?)
I have an alias called "lg" for
log --color --graph --pretty=format:\'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset\' --abbrev-commit --first-parent
Having that in my completions ensures that git commands essentially
always use one column at most. That's not great, so we now shorten it
to 35 chars (plus an annoying 2 for ".." because I can't be bothered
to check for unicode support - an argument for a "string ellipsize", I guess?)
"git add ./" shows only hidden files (if at all). It should show all files
that can be added.
The problem is that candidates come from "git status" which prints clean
relative paths. Let's allow some unclean paths.
This is far from a complete fix but it should work for the common scenario.
Observe that wildcard_complete_internal() actually filters out all non-hidden
files, if the query is `./`.
Closes#9091
This can be used to print the modification time, like `stat` with some
options.
The reason is that `stat` has caused us a number of portability
headaches:
1. It's not available everywhere by default
2. The versions are quite different
For instance, with GNU stat it's `stat -c '%Y'`, with macOS it's `stat
-f %m`.
So now checking a cache file can be done just with builtins.
- Generally better descriptions,
- uname checks to not complerte unavailable options on
NetBSD, FreeBSD, DragonFly, Solaris, Darwin
- Describe/complete GNU's --time=access,mtime... arg
- Remove -f it is a no-op and not documented.
This is sort of slow because it's called hundreds of times.
We used to have a cache, introduced in ad9b4290e, but it was removed
in fee5a9125a because it had
false-positives.
So what we do, because the issue is that this is called hundreds of
times per-commandline, we cache it keyed on the commandline.
This speeds up `complete -C'git sta'` by a factor of 2.3x.
Commit ad9b4290e optimized git completions by adding a completion that would
run on every completion request, which allows to precompute data used by
other completion entries. Unfortunately, the completion entry is not run
when the commandline contains a flag like `git -C`. If we didn't
already load git.fish, we'd error. Additionally, we got false positive
completions for `git diff -c`.
So this hack was a very bad idea. We should optimize in another way.
git versions that only support porcelain v1 output (like on CentOS 7,
which has 1.8.3) weren't completing files prefixed with : correctly iff
the name after the colon was also a valid relative path.
Fixes the tests on CentOS 7.
Git's pathspec system is kind of annoying:
> A pathspec that begins with a colon : has special meaning. In the short form, the leading colon : is followed by zero or more "magic signature" letters (which optionally is terminated by another colon :), and the remainder is the pattern to match against the path. The "magic signature" consists of ASCII symbols that are neither alphanumeric, glob, regex special characters nor colon. The optional colon that terminates the "magic signature" can be omitted if the pattern begins with a character that does not belong to "magic signature" symbol set and is not a colon.
So if we complete `:/foo`, that "works" because "f" is alphanumeric
and so the "/" is the only magic character here.
If, however the filename starts with a magic character, that's used as
a magic signature.
So we do what the docs say and terminate the magic signature after the
"/" (which means "from the repo root").
Fixes#9004
`wg show` command shows entire interfaces configuration, not just the
list. This breaks completion when running fish from root, because
command output looks like this:
interface: wg0
public key: fred2rX85AxpcTObLuiWTzkRPZaXjnhd1C4XOdZOGWs=
private key: (hidden)
listening port: 12345
fwmark: 0xca6c
peer: g2YHHDkxmgoT9EV0TxKtq556WLXpaOh4zgC5L7EAGTQ=
endpoint: 192.168.88.50:54321
allowed ips: 0.0.0.0/0, ::/0
latest handshake: 1 minute, 37 seconds ago
transfer: 1.83 MiB received, 927.19 KiB sent
To show just the list of active interfaces, `wg show interfaces` should
be used instead.
Because TAGs are easy to type and complete, but commits with its SHA are
difficult to complete manualy. Keep commits and TAGs order to show more recent
commits first.
Whenever completing any git commandline, we invoke __fish_git_using_command
173 times*. Every invocation calls "commandline" and "argparse"
to the same effect. Let's parse the command line once, and reuse the results
later.
I'm observing a speed-up from 200ms to 120ms with
perf stat -r 10 buildrel/fish -c 'complete -C "git checkout ">/dev/null'
Alternative solutions:
1. teach fish to cache such things automatically.
2. rewrite git completions to compute most completions in a single function,
which will naturally avoid redundant work. This sounds viable but it's
a lot of work.
* we have a thousand uses of __fish_git_using_command, so I'm not sure why
it's only 173.
See the discussion in #8266
localectl may emit an error for whatever reason. The localectl
completion runs localectl in a command substitution so our stderr
redirect doesn't apply. Just redirect to null. Hopefully this fixes the
tests.
I *think* this is printing
> debconf: DbDriver "passwords" warning: could not open /var/cache/debconf/passwords.dat: Permission denied
On Github Actions?
Might need to adjust the test to store the output.
* feat(completions): add sops completions
* fix: start descriptions with uppercase letter
* fix: shorten descriptions
* fix: use spaces instead of ;
* fix: typo
* feat: better option than __fish_is_first_token
* feat: improve __fish_sops_commands function
* fix: remove useless code
* fix: fix the second argument is not called
* completions/lxc: parse container names with numbers and other commands
* Revert CHANGELOG.rst
* Code Review: use multiple subcommands ability of __fish_seen_subcommand_from
git.fish loads git-foo.fish completions.
As reported in #8831, this can be slow when the user has run something like
complete git-foo -w 'git diff'
because git.fish runs 'complete -C "git-autofixup "' at load time.
Commit 09161761c (Complete custom "git-foo" commands from "git foo",
2021-01-24) did that to avoid adding filename completions for "git foo".
Drop that check.
This means that users who don't want filename completion for "git foo",
need to define at least one custom completion for "git-foo", like
complete git-foo -f
-d has been removed in FreeBSD 13 & monterey
-t has also been removed from date(1)
-n has been "Obsolete flag, accepted and ignored for compatibility",
for a while, leave it out.
-R added for RFC 2822
-I added for ISO 8601
Some description changes
These printed an error on load if networkmanager isn't running.
Since at that point it's not useful to complete anything, just try the
first call and if that fails exit.
* New -n flag for string join command.
This is an argument that excludes empty result items. Fixes#8351
* New documentation for string-join.
The new argument --no-empty was added at string-join manpage.
* New completions for the new -n flag for string join.
* Remove the documentation of the new -n flag of string join0
The reason to remove this new argument in the join0 is that this flag basically doesn't make any difference in the join0.
* Refactor the validation for the string join.
The string join command was using the length of the argument, this commit changes the validation to use the empty function.
* Revert #4b56ab452
The reason for the revert is thath the build broke on the ubuntu in the Github actions.
* Revert #e72e239a1
The reason the compilation on GitHub broke is that the test was weird, it didn't even run it, Common CI systems are typically very very resource-constrained.
* Resolve conflicts in the string-join.rst.
* Resolve conflicts in the "string-join.rst".
commit #1242d0fd7 not fixed all conflicts.
This was an oversight in 7fb3880b96, and would have spewed the existing rustup completions if this file was sourced twice (which probably won't happen given autoloading, to be fair).
Helm 3 provides an autogenerated completion since version 3.4.0.
The previous implementation is replaced by this because it was specific to the
now-deprecated helm 2.
The completions appear to be fully featured including descriptions and
completion for dynamic arguments such as namespaces and releases.
Their names are not perfect, so let's keep them as internal functions,
until we figure out how/if we want to expose this.
This reverts 0445126c2 (Undunder __fish_is_nth_token, 2021-06-29) (but I
did it without "git revert").
Closes#8008
This patch adds completions for the values of properties, emitted once the
current token matches the name of a zfs property in full, for the various places
where such a property can be assigned.
e.g.
zfs set canmoun<TAB> continues to only provide "canmount" as a completion, but
zfs set canmount<TAB> will provide a list of all valid values for the property.
The existing code made an attempt to complete the values for the specific case
of `zfs set PROP=` but I could never get it to work for me under FreeBSD, so I
presume it was Linux-specific. This patch should be cross-platform and extends
the completions to anywhere where a property may be set.
The previous behavior vs the current (hopefully ideal) behavior:
* zpool attach [lists pools and devices - should list only pools]
* zpool attach tank [lists pools and devices - should list only devices already
part of pool "tank"]
* zpool attach tank da1 [lists pools and devices - should list only devices not
already part of pool "tank" or any pool, depending on -f flag to attach]
As of FreeBSD 13 (released April 2021), FreeBSD has rebased its zfs support on
top of the OpenZFS distribution previously used only/chiefly by Linux;
accordingly, it has gained support for some previously Linux-only completions.
This patch changes some completions previously predicated on a Linux ZFS
installation to the presence of an OpenZFS installation. Note that there
continue to be (and probably always will be) separate Linux-only and
FreeBSD-only completions (and not just when it comes to interacting with the
device subsystem, etc).
Cursory experiments reveal that there are only three color options where
the background color is not ignored (though I didn't check all of them).
For these three options, the foreground color is ignored. Similar for
bold/italics/underline.
Teach set completions to only show the colors that won't be ignored.
Unrelated observation: we write
-a '--background=(set_color --print-colors)'
instead of
-l background -a '(set_color --print-colors)'
because we want all colors to show straight away (there are no other
meaningful arguments).
4b018a760 (set completions: add more special variables, fix colors, 2021-12-13)
changed a global variable to a local, which is no longer visible to this
function. Fix this, so "set LANG <TAB>" works again.
Add completions that are correct on darwin and probably bsd.
Add missing -H, -L, -P completions to GNU chown.
Remove errant GNU completion claiming -h is short for --help.
The regex for task names was a bit off, so
- include uppercase letters, to support `TMessagesProj:assembleMiniRelease`
- don't include characters like `[]` (which happen to lie between ASCII `A` and `z`)
- include numbers, which are presumably valid in an identifier
- explicitly include the optional ` - ` bit in the regex
Remove some nonexistent options (my gcc does not know "-mdata"), fix
the longest description in all of fish and remove some argument
markers from the option.
It's using GNU specific flags, which doesn't work on BSDs like macOS.
Instead this just formats the current time into
seconds and then the `math` builtin for calculating the 5 min timeout.
Git completions use wrapper function __fish_git instead of directly
running git. This allows them to be aware of Git's global options, like
--git-dir. Let's use __fish_git also for listing config keys & values,
so it can more accurately list local (= per repo) git configuration.
We don't provide completions on "git config " because we require
"fish_is_nth_token 3". Confusingly, fish_is_nth_token only counts
tokens *before* the cursor, so 2 is the right number here.
While at it, fix a typo and delete an unused completion entry (it
ran conditional on __fish_is_first_arg, which is always false for a
git subcommand).
This patch introduces basic completion of the -pl|--projects switch for
mvn. The implementation is quite naive but it's better than nothing. A more
robust implementation would require either scanning the filesystem or running
mvn which might slow down completion significantly.
This solution can be improved by using an XML parser instead of grep/sed.
* add --bold, --italics, all of them,
* and we add them as arguments so that they are do not
render like long options, they are just self-descriptive
literal strings in this context.
* solve an unneccessary global var.
Fixes#8518
Use the remaining_to_disclose count to determine if all completions
are shown (allows consistent behavior between short and long completion
lists).
Closes#8485
Cargo subcommand extensions don't provide a description in `cargo --list`,
the regex used to filter this list ignored lines without a description.
This change fixes that.
A completion entry like «complete -a '\\~'» results in completions
that insert \~ into the command line. However we usually want to
insert ~, but there is no way to do that.
There are a couple of longstanding issues about completion escaping
[1]. Until we fix those in a general way, fix the common case by
never escaping tildes when applying custom completions to the command
line. This is a hack but will probably work out fine because we don't
expect literal tildes in arguments.
The tilde is included in completions for cdh, or
__fish_complete_suffix, which simply forwards results from "complete
-C". Revert a workaround to cdh that expanded ~, because we can now
render that without escaping.
Closes#4570, #8441
[ja: tweak patch and commit message]
[1]: https://github.com/fish-shell/fish-shell/pull/8441#discussion_r748803338
* Rename pabcnetcclear complete
* Code clean-up
* Debug values support
* Change /Debug description
* Standardize help
* Use single quotes for --arguments
* Add findstr completion
* Standardize completion
* Show completion only on Windows
* Use single quotes where possible
* Remove quotes where possible
* Remove OS check
* Use single quotes for --arguments
This was "--authoritative" (and unauthoritative). It was meant to make
fish mark everything that couldn't be generated via the completions as
an error, it was removed years ago and has been a no-op since then.
This behavior matches the way completions are found for `cargo run`,
`cargo test`, etc., and is more robust and correct compared to looking
at filenames.
This program uses the Cobra framework for argument parsing and completion generation.
Just source the completions supplied by upstream.
This works around "go install" not being able to install completions files (only binaries).
Usually local branches have remote branches with the same name, and in
completion they are currently overshadowed by unique remote branches, making
local branches hard to find. Define local branch completion after unique
remote branch completion to show local branches before unique remote branches.
If $xdg_chache_home is empty, this is not a valid fish expression:
[ \( -z \) -o \( ! -d \) ]
and results into an error.
While at it, also use $XDG_CACHE_HOME if that directory does not exist.
This seems better than falling back to $HOME/.cache, which the user has
explicitly overridden via $XDG_CACHE_HOME.
Suggest files to "man -l", but only if the "-l" option is supported
(so not on BSD). Technically we should accept multiple files but this
seems good enough.
Also suggest files when the token-at-cursor contains a slash, because
man will treat arguments as file paths if they contain a /.
git-status --porcelain prints status letter T when a file changed type
between either regular file, symlink or submodule. It can occur in
exactly the same cases as M (modified), so extend the fix for #8311
accordingly.
For submodules, our completions are probably not always correct,
hopefully those cases are rare.
This is weirdly undocumented (as of git 2.33.0), but `git status` prints a "T" state if
the file has its "T"ype changed, e.g. from a regular file to a symlink.
For our purposes that's just another kind of modification.
Fixes#8311.
* Fix ls.fish: add -l option to GNU ls
* Sort alphabetically and remove --lcontext and --scontext (what are these?) on shared and GNU part.
* Revert --lcontext and --scontext options.
The same hack that is used for `pkg remove <foo>` is required here, too.
Due to the massive number of results, we use `head -n 250` to prevent
the completion from hanging or the shell from being overencumbered by
too many possibe completions. However, this would only generate matches
for any of the first 250 packages, rather than printing the first 250
packages that match.
[ci skip]
support for ping from iputils (version 20210202)
support for ping from inetutils (version 2.1)
support for ping from busybox (version 1.33.1)
support for ping from FreeBSD and macOS (by @juntuu)
We keep __fish_is_nth_token for compatibility and edit the
implementations of __fish_is_nth_token, __fish_is_first_token and
__fish_is_token_n to use fish_is_nth_token
Using `complete -F -c git -n __fish_git_needs_subcommand -a $command -d
$description` causes file completions to be forced on entire git command
which is not a desired result. Morever without the `-F` flag file
completions work just as expected and is useless addition
`fish_config theme`:
- `list` to list all available themes (files in the two theme
directories - either the web_config/themes one or
~/.config/fish/themes!)
- `show` to show select (or all) themes right in the terminal - this
starts another fish that reads the theme file and prints the sample
text, manually colored
- `choose` to load a theme *now*, setting the variables globally
- `save` to load a theme and save the variables universally
- `dump` to write the current theme in .theme format (to stdout)
- `demo` to display the current theme
* Add initial completion for Angular CLI
* Remove completion for `ng completion`
The `ng completion` doesn't exist. The completiond were autogenerated
using a script. See angular/angular-cli#21085
* Use shorter wording
* Fix typos
The `__fish_git_unique_remote_branches` function isn't applicable here
since `git describe` won't know what to do with a remote branch without
the remote prefix. For example, if there is a branch called
`origin/my-branch`, you can't execute `git describe my-branch` until the
branch is checked out locally. In other words:
Good: `git describe origin/my-branch`
Bad: `git describe my-branch`
Good: `git switch my-branch; git describe my-branch`
The completions for the `--example` option are generated using `find`.
The `find` utility on macOS will produce the following output when the
path argument has a trailing slash:
```
~/bat $ find ./examples/
./examples/
./examples//cat.rs
./examples//advanced.rs
./examples//simple.rs
./examples//list_syntaxes_and_themes.rs
./examples//yaml.rs
```
And will produce this output if the path does NOT have a trailing slash:
```
~/bat $ find ./examples
./examples
./examples/cat.rs
./examples/advanced.rs
./examples/simple.rs
./examples/list_syntaxes_and_themes.rs
./examples/yaml.rs
```
The extra slash after `examples` ends up in the completion suggestions
which is incorrect:
```
~/bat $ cargo run --example <TAB>
/advanced /cat /list_syntaxes_and_themes /simple /yaml
```
Unlike on my Linux box where `find` doesn't output the trailing slash:
```
~/bat $ cargo run --example <TAB>
advanced cat inputs list_syntaxes_and_themes simple yaml
```
Importantly, I get the same (correct) output on Linux even without the
trailing slash in the path argument to `find`.
This can give false positives but only if used on directories that
mix tracked and untracked files. The performance is better than
listing all tracked files, and in any case we're pretty far from a
correct solution that knows the target Git commit, so this seems like
good compromise.
In such cases, `pacmd help` prints
No PulseAudio daemon running, or not running as session daemon.
to stderr, which ends up printed to the user terminal.
It's a bit weird to *have* to fire up a browser to get fish_config to
choose a prompt.
So this adds a `prompt` subcommand to `fish_config`:
- `fish_config prompt list` shows all the available prompt names
- `fish_config prompt show` demos the available sample prompts
- `fish_config prompt choose` sources a prompt
- `fish_config prompt save` makes the choice permanent
A bare `fish_config` or `fish_config browse` opens the web UI.
Part of #3625.
TODO: This shows the right prompt on a new line. Showing it in-line is awkward
to do because we'd have to move it to the right.
Complete RPM files instead of pacakges if there is either
1. a slash in the token, which precludes package names
2. no matching package
To enable 2, pass the commandline token to the dnf query, instead of
an undefined variable. This allows SQL injection; not sure if we care.
We could always complete RPM files but maybe that's too noisy.
Also, isn't that what the "rpm" command is for?
Closes#7928
This is all of the sections in interactive, language and for_bash_users.
The faq names are so long that we're not adding them, also not all of
these have descriptions yet.
After a fish installation is upgraded to 3.2.0, active shells could
throw an error attempting to load Git completions. It's just a
transient error but also easily avoidable by using the old style.
See #7822
Some third party Git tools provide a man page, which we can at least use
for completing options.
The old logic excluded all generated completions for Git subcommands.
Instead, try to load completions for all available external subcommands.
We can use $PATH/git-* because /bin/git-add and friends were removed in Git
1.6.0 in 2008.
Closes#4358 (the "git-foo" wrapping was added in #7652)
* completions/userdbctl: init
userdbctl:
Show user and group information.
A part of systemd.
* completions/userdbctl: fix complete services
Complete the services at the completion time.
This goes to a separate file because that makes option parsing easier
and allows profiling both at the same time.
The "normal" profile now contains only the profile data of the actual
run, which is much more useful - you can now profile a function by
running
fish -C 'source /path/to/thing' --profile /tmp/thefunction.prof -c 'thefunction'
and won't need to filter out extraneous information.
We were soucing it manually, and implicitly via the `complete -C "git-foo "`
wrapper. Always use the latter, so fish knows that the completion is already
loaded.
Since #7075, git-foo.fish files are sourced when Git completions are loaded.
However, at least Cobra (CLI framework for Go) provides completions like
complete git-foo ...
This means that completions are only offered when typing "git-foo <TAB>"
and not on "git foo <TAB>". Fix this by forwarding the completion requests.
Take care to only forward if there are actually completions for "git-foo",
to avoid adding filename completions.
* Include completion for all pkg alias subcommands
* Formatting and dynamic evaluation of alias subcommands
* only set package_name completion once
* fixed syntax error
This is mildly useful when activating virtualenvs. We had remove
these files earlier, but since there are no more false negatives from
__fish_complete_suffix it seems safe to re-add them.
0507b04 loosened the FreeBSD-only restriction on `pkg` completions to
!SunOS in order to support DragonFlyBSD. This is overly broad and can
still cause the script to be loaded on systems that we can't
realistically expect to have `pkg` be the FreeBSD pkgng package manager
(especially since `pkg` is a much more generic term when compared to the
likes of `dnf`, `yum`, `deb`, and `apt`).
This patch changes `pkg` + BSD to be the minimum requirements for
considering a system to be using pkgng.
In e8b6705067 this was made to exit if
not on FreeBSD because Solaris has a tool called "pkg" that apparently
"isn't worth supporting".
Since at least DragonflyBSD also uses FreeBSD's pkg thing, let's turn
that check around.
Of note: The rpm/yum thing seems to be coupled, so I put it into one
function that tries the yum helper and uses the rpm path otherwise.
Zypper is already its own thing, so this should only be used for yum
and probably dnf (does that still have the helper?)
Zypper can be dropped, as that already used a separate function in the file.
Apk can just be inlined - it's literally one line for installed and another for all packages.
