message: zsh completion: Pull list of commands from cargo --list
  The list given by `cargo --list` contains the command descriptions, too.
  It's better to keep only one place to be in sync with changes.
  This commit reverts
diff: autoload -U regexp-replace
  -zstyle -T ':completion:*:*:cargo:*' tag-order && \
  - zstyle ':completion:*:*:cargo:*' tag-order 'common-commands'
  -
  _cargo() {
  local context state state_descr line
  typeset -A opt_args
  @@ -24,14 +21,10 @@ _arguments \
  '(+beta +nightly)+stable[use the stable toolchain]' \
  '(+stable +nightly)+beta[use the beta toolchain]' \
  '(+stable +beta)+nightly[use the nightly toolchain]' \
  - '1: :->command' \
  + '1: :_cargo_cmds' \
  '*:: :->args'
  case $state in
  - command)
  - _alternative 'common-commands:common:_cargo_cmds' 'all-commands:all:_cargo_all_cmds'
  - ;;
  -
  args)
  case $words[1] in
  bench)
  @@ -426,44 +419,9 @@ esac
  }
  _cargo_cmds(){
  -local -a commands;commands=(
  -'bench:execute all benchmarks of a local package'
  -'build:compile the current package'
  -'check:check the current package without compiling'
  -'clean:remove generated artifacts'
  -'doc:build package documentation'
  -'fetch:fetch package dependencies'
  -'generate-lockfile:create lockfile'
  -'git-checkout:git checkout'
  -'help:get help for commands'
  -'init:create new package in current directory'
  -'install:install a Rust binary'
  -'locate-project:print "Cargo.toml" location'
  -'login:login to remote server'
  -'metadata:the metadata for a package in json'
  -'new:create a new package'
  -'owner:manage the owners of a crate on the registry'
  -'package:assemble local package into a distributable tarball'
  -'pkgid:print a fully qualified package specification'
  -'publish:upload package to the registry'
  -'read-manifest:print manifest in JSON format'
  -'run:run the main binary of the local package'
  -'rustc:compile a package and all of its dependencies'
  -'rustdoc:build documentation for a package'
  -'search:search packages on crates.io'
  -'test:execute all unit and tests of a local package'
  -'uninstall:remove a Rust binary'
  -'update:update dependencies'
  -'verify-project:check Cargo.toml'
  -'version:show version information'
  -'yank:remove pushed file from index'
  -)
  -_describe -t common-commands 'common commands' commands
  -}
  -
  -_cargo_all_cmds(){
  -local -a commands;commands=($(cargo --list))
  -_describe -t all-commands 'all commands' commands
  + local -a commands
  + commands=( ${${${(M)"${(f)$(cargo --list)}":# *}/ ##/}/ ##/:} )
  + _describe 'command' commands
  }
  