Update pip completion

src/_pip

@@ -20,15 +20,15 @@ local ret=1 state
 
 local -a common_ops
 common_ops=(
-  "--version[display version number]"
   {-h,--help}"[show help]"
-  {-E,--environment=}"[virtualenv environment to run pip]:environment:_directories"
-  {-s,--enable-site-packages}"[include site-packages in virtualenv]"
   {-v,--verbose}"[give more output]"
+  {-V,--version}"[show version and exit]"
   {-q,--quiet}"[give less output]"
-  "--log=[log file where a complete record will be kept]"
+  "--log=[log file where a complete record will be kept]:file"
   "--proxy=[specify a proxy in the form user:passwd@proxy.server:port]:proxy"
   "--timeout=[set the socket timeout (default 15 seconds)]:second"
+  "--exists-action=[default action when a path already exists: (s)witch, (i)gnore, (w)ipe, (b)ackup]:action"
+  "--cert=[path to alternate CA bundle]:path"
 )
 
 _directories () {
@@ -45,14 +45,16 @@ case $state in
   subcommand)
     local -a subcommands
     subcommands=(
-      "bundle:create pybundle"
-      "freeze:put all currently installed packages"
-      "help:show available commands"
       "install:install packages"
-      "search:search pypi"
       "uninstall:uninstall packages"
-      "unzip:unzip undividual packages"
+      "freeze:put all currently installed packages"
+      "list:list installed packages"
+      "show:show information about installed packages"
+      "search:search pypi"
       "zip:zip dividual packages"
+      "unzip:unzip undividual packages"
+      "bundle:create pybundle"
+      "help:show available commands"
     )
 
     _describe -t subcommands 'pip subcommand' subcommands && ret=0
@@ -74,20 +76,50 @@ case $state in
       {-f,--find-links=}"[URL to look for packages at]:url"
     )
 
+    local -a local_env
+    local_env=(
+      {-l,--local}"[If in a virtualenv that has global access, do not list globally-installed packages]"
+    )
+
+    local -a pi_ops
+    pi_ops=(
+      $findlink
+      {-i,--index-url=}"[base URL of Python Package Index]:URL"
+      {-M,--use-mirrors}"[use the PyPI mirrors as a fallback in case the main index is down]"
+      "--mirrors=[specific mirror URLs to query when --use-mirrors is used]:URL"
+      "--extra-index-url=[extra URLs of package indexes to use in addition to --index-url]:URL"
+      "--no-index[ignore package index (only looking at --find-links URLs instead)]"
+    )
+
     case $words[1] in
-      bundle | install)
+      install | bundle)
         args+=(
           {-e,--editable=}"[install a package directly from a checkout]:VCS+REPOS_URL[@REV]#egg=PACKAGE"
           $requirement
-          $findlink
+          {-b,--build=}"[unpack packages into DIR]:directory:_directories"
-          {-i,--index-url=,--pypi-url=}"[base URL of Python Package Index]:URL"
+          {-t,--target=}"[install packages into DIR]:directory:_directories"
-          "--extra-index-url=[extra URLs of package indexes to use]:URL"
+          {-d,--download=}"[download packages into DIR instead of installing them]:directory:_directories"
-          {-b,--build=,--build-dir=}"[unpack packages into DIR]:directory:_directories"
+          "--download-cache=[cache downloaded packages in DIR]:directory:_directories"
-          {--src=,--source=}"[check out --editable packages into DIR]:directory:_directories"
+          "--src=[check out --editable packages into DIR]:directory:_directories"
           {-U,--upgrade}"[upgrade all packages to the newest available version]"
+          "--force-reinstall[when upgrading, reinstall all packages even if they are already up-to-date]"
           {-I,--ignore-installed}"[ignore the installed packages]"
-          "--noinstall[download and unpack all packages, but don't actually install them]"
+          "--no-deps[don't install package dependencies]"
-          "--install-option=[extra arguments to be supplied to the setup.py install command]"
+          "--no-install[download and unpack all packages, but don't actually install them]"
+          "--no-download[don't download any packages, just install the ones already downloaded]"
+          "--install-option=[extra arguments to be supplied to the setup.py install command]:options"
+          "--global-option=[Extra global options to be supplied to the setup.py call before the install command]:options"
+          "--user[install using the user scheme]"
+          "--egg[install as self contained egg file, like easy_install does]"
+          "--root=[Install everything relative to this alternate root directory]:directory:_directories"
+          $pi_ops
+        )
+      ;;
+
+      uninstall)
+        args+=(
+          $requirement
+          {-y,--yes}"[don't ask for confirmation of uninstall deletions]"
         )
       ;;
 
@@ -95,6 +127,29 @@ case $state in
         args+=(
           $requirement
           $findlink
+          $local_env
+        )
+      ;;
+
+      list)
+        args+=(
+          {-o,--outdated}"[list outdated packages (excluding editables)]"
+          {-u,--uptodated}"[list uptodated packages (excluding editables)]"
+          {-e,--editable}"[list editable projects]"
+          $local_env
+          $pi_ops
+        )
+      ;;
+
+      show)
+        args+=(
+          {-f,--files}"[show the full list of installed files for each package]"
+        )
+      ;;
+
+      search)
+        args+=(
+          "--index-url[base URL of Python Package Index]:URL"
         )
       ;;