xos.rb: Fix prompt

First attempt to fix #3259

lib/oxidized/model/xos.rb

@@ -3,7 +3,15 @@ class XOS < Oxidized::Model
 
   # Extreme Networks XOS
 
-  prompt /^\s?\*?\s?[-\w]+\s?[-\w.~]+(:\d+)? [#>] $/
+  # (\* )?        (opt) unsaved configuration
+  # (Slot-\d+ )?  (opt) slot for stacks
+  # (VPEX )?      (opt) VPEX = Virtual port extender
+  # \(?           (opt) parenthesis around hostname
+  # [\w\-.~]+     hostname
+  # \)?           (opt) parenthesis around hostname
+  # ([.:]\d+)?    (opt) prompt counting
+  #  [#>]         trailing text
+  prompt /^(\* )?(Slot-\d+ )?(VPEX )?\(?[\w\-.~]+\)?([.:]\d+)? [#>] $/
   comment  '# '
 
   cmd :all do |cfg|

spec/model/data/xos:generic:prompt.yaml

@@ -0,0 +1,18 @@
+pass:
+  # Prompts from PR #2075
+  # unsaved config
+  - "* mydevice-eu-sw02 > "
+  # saved config
+  - "my-device02.1 # "
+  - "my-device02.2 # "
+  # old xos
+  - "ancient-device02:1 # "
+  # Prompts from issue #2107
+  - "Slot-1 stack_office_x3.1 # "
+  # Prompts from issue #2113
+  - "* sw0.l9.kv.1 # "
+  - "* sw0.l9.kv.2 # "
+  # Prompts from issue #3259
+  - "Slot-1 VPEX SW-00035-002.1 # "
+  - "(super-ancient-machine001) > "
+  - "(super-ancient-machine001) # "