feat(ssh): add -B arg completion

Author: scop

completions/ssh

@@ -266,6 +266,10 @@ _ssh()
     # Keep cases sorted the same they're in ssh's usage message
     # (but do group ones with same arg completion)
     case $prev in
+        -*B)
+            _available_interfaces -a
+            return
+            ;;
         -*b)
             _ip_addresses
             return
@@ -336,7 +340,7 @@ _ssh()
     else
         local args
         # Keep glob sort in sync with cases above
-        _count_args "=" "-*[bcDeLpRWEFSIiJlmOoQw]"
+        _count_args "=" "-*[BbcDeLpRWEFSIiJlmOoQw]"
         if ((args > 1)); then
             compopt -o filenames
             COMPREPLY+=($(compgen -c -- "$cur"))