PATCH: completion for who and w

[Oliver Kiddle <okiddle@xxxxxxxxxxx>]

This adds completion for who and w. This is mainly useful because
they're the sort of commands that I find myself expecting to have
completions.

Oliver

diff --git a/Completion/Unix/Command/_w b/Completion/Unix/Command/_w
new file mode 100644
index 000000000..8fb4154c7
--- /dev/null
+++ b/Completion/Unix/Command/_w
@@ -0,0 +1,47 @@
+#compdef w
+
+local args
+
+case $OSTYPE in
+  linux*)
+    args=(
+      '(H -f --from)'{-f,--from}'[toggle display of remote hostname]'
+      '(H -h)--no-header[suppress the heading]'
+      '(H -i --ip-addr)'{-i,--ip-addr}'[display IP address instead of hostname]'
+      '(H -o --old-style -s --short)'{-o,--old-style}'[old style output format]'
+      '(H -s --short -o --old-style)'{-s,--short}'[use short output format]'
+      '(H -u --no-current)'{-u,--no-current}'[ignore the username while figuring out the current process and cpu times]'
+      + H
+      '(-)--help[display help information]'
+      '(-)'{-V,--version}'[display version information]'
+    )
+  ;;
+  *bsd*|darwin*|dragonfly*)
+    args+=( '-i[sort output by idle time]' )
+  ;|
+  openbsd*)
+    args+=( '-a[translate network addresses into names]' )
+  ;|
+  (free|net)bsd*|dragonfly*)
+    args+=( '-n[show network addresses as numbers]' )
+  ;|
+  *bsd*|dragonfly*)
+    args+=(
+      '-M+[extract values from specified core]:core file:_files'
+      '-N+[extract name list from specified system]:system file:_files'
+    )
+  ;|
+  freebsd*|dragonfly*)
+    args+=( '-d[dump process list on a per controlling tty basis]' )
+  ;|
+  solaris*)
+    args+=( '!(-s -w -l)'{-l,-w}
+      '-s[short output form]'
+      '(-)-u[produce only the heading line]'
+    )
+  ;|
+esac
+
+_arguments -S -s \
+  '(--no-header)-h[suppress the heading]' \
+  '*:user:_users' $args
diff --git a/Completion/Unix/Command/_who b/Completion/Unix/Command/_who
new file mode 100644
index 000000000..1f901af18
--- /dev/null
+++ b/Completion/Unix/Command/_who
@@ -0,0 +1,64 @@
+#compdef who gwho
+
+local args variant
+
+_pick_variant -r variant gnu=GNU $OSTYPE --version
+
+case $variant in
+  gnu)
+    args=(
+      '(Q -a --all -b --boot -d --dead -l --login -p --process -q --count -r --runlevel -t --time -T -w --mesg --message --writable -u --users)'{-a,--all}'[same as -b -d --login -p -r -t -T -u]'
+      '(Q -b --boot)'{-b,--boot}'[print time of last system boot]'
+      '(Q -d --dead -a --all)'{-d,--dead}'[print dead processes]'
+      '(Q -H --heading)'{-H,--heading}'[print line of column headings]'
+      '(Q -l --login)'{-l,--login}'[print system login processes]'
+      '(Q)--lookup[canonicalize hostnames via DNS]'
+      '(Q)-m[print information about current terminal]'
+      '(Q -p --process)'{-p,--process}'[print active processes spawned by init]'
+      '(Q -r --runlevel)'{-r,--runlevel}'[print current runlevel]'
+      '(Q -t --time)'{-t,--time}'[print last system clock change]'
+      '(Q -T -w --mesg --message --writable)'{-T,-w,--mesg,--message,--writable}"[show user's message acceptance status as +, - or ?]"
+      '(Q -u --users)'{-u,--users}'[show idle time]'
+      '!(Q -a)-s' '!(Q -a)--short'
+      + Q
+      '(-)'{-q,--count}'[print only login names and number of users logged on]'
+      '(-)--help[display help information]'
+      '(-)--version[display version information]'
+    )
+  ;;
+  darwin*|dragonfly*|netbsd*|solaris*)
+    args=(
+      '(Q -a)-d[print dead processes]'
+      '(Q -a)-l[print system login processes]'
+      '(Q -a)-p[print active processes spawned by init]'
+      '(Q -a)-r[print current runlevel]'
+      '(Q -a)-t[print last system clock change]'
+    )
+  ;|
+  dragonfly*|netbsd*)
+    args+=( '(Q)-v[show process exit status, session id etc]' )
+  ;|
+  (net|free)bsd*|darwin*|dragonfly*|solaris*)
+    args+=(
+      '(Q -b -d -p -r -T -u)-a[print all entries]'
+      '(Q -a)-b[print time of last system boot]'
+      '!(Q -a)-s'
+    )
+  ;|
+  *)
+    args+=(
+      '(Q)-H[print line of column headings]'
+      '(Q)-m[print information about current terminal]'
+      "(Q -a)-T[show user's message acceptance status as +, - or ?]"
+      '(Q -a)-u[show idle time]'
+      + Q '(-a -b -d -H -l -m -p -r -s -t -T -v)-q[print only login names and number of users logged on]'
+    )
+  ;|
+  solaris*)
+    args+=(
+      '(-a -b -d -H -l -m -p -r -s -t -T)-n+[specify number of users to list per line]:number'
+    )
+  ;;
+esac
+
+_arguments -s -S ':file:_files' $args