update elements and fix some bugs

lib/src/prism/components/prism-powershell.js

 Prism.languages.powershell = {
         'comment': [
                 {
                         pattern: /(^|[^`])<#[\w\W]*?#>/,
                         lookbehind: true
                 },
                 {
-                        pattern: /(^|[^`])#.*?(\r?\n|$)/,
+                        pattern: /(^|[^`])#.+/,
                         lookbehind: true
                 }
         ],
-        'string': {
-                pattern: /("|')(`?[\w\W])*?\1/m,
-                inside: {}
-        },
+        'string': [
+                {
+                        pattern: /"(`?[\w\W])*?"/,
+                        inside: {
+                                'function': {
+                                        pattern: /[^`]\$\(.*?\)/,
+                                        // Populated at end of file
+                                        inside: {}
+                                }
+                        }
+                },
+                /'([^']|'')*'/
+        ],
         // Matches name spaces as well as casts, attribute decorators. Force starting with letter to avoid matching array indices
         'namespace': /\[[a-z][\w\W]*?\]/i,
         'boolean': /\$(true|false)\b/i,
         'variable': /\$\w+\b/i,
-        // per http://technet.microsoft.com/en-us/library/hh847744.aspx
-        'keyword': /\b(Begin|Break|Catch|Class|Continue|Data|Define|Do|DynamicParam|Else|ElseIf|End|Exit|Filter|Finally|For|ForEach|From|Function|If|In|InlineScript|Parallel|Param|Process|Return|Sequence|Switch|Throw|Trap|Try|Until|Using|Var|While|Workflow)\b/i,
         // Cmdlets and aliases. Aliases should come last, otherwise "write" gets preferred over "write-host" for example
         // Get-Command | ?{ $_.ModuleName -match "Microsoft.PowerShell.(Util|Core|Management)" }
         // Get-Alias | ?{ $_.ReferencedCommand.Module.Name -match "Microsoft.PowerShell.(Util|Core|Management)" }
-        'function': /\b(Add-(Computer|Content|History|Member|PSSnapin|Type)|Checkpoint-(Computer|Content|EventLog|History|Item|ItemProperty|Variable)|Compare-(Object)|Complete-(Transaction)|Connect-(PSSession)|ConvertFrom-(Csv|Json|StringData)|Convert-(Path)|ConvertTo-(Csv|Html|Json|Xml)|Copy-(Item|ItemProperty)|Debug-(Process)|Disable-(ComputerRestore|PSBreakpoint|PSRemoting|PSSessionConfiguration)|Disconnect-(PSSession)|Enable-(ComputerRestore|PSBreakpoint|PSRemoting|PSSessionConfiguration)|Enter-(PSSession)|Exit-(PSSession)|Export-(Alias|Clixml|Console|Csv|FormatData|ModuleMember|PSSession)|ForEach-(Object)|Format-(Custom|List|Table|Wide)|Get-(Alias|ChildItem|Command|ComputerRestorePoint|Content|ControlPanelItem|Culture|Date|Event|EventLog|EventSubscriber|FormatData|Help|History|Host|HotFix|Item|ItemProperty|Job|Location|Member|Module|Process|PSBreakpoint|PSCallStack|PSDrive|PSProvider|PSSession|PSSessionConfiguration|PSSnapin|Random|Service|TraceSource|Transaction|TypeData|UICulture|Unique|Variable|WmiObject)|Group-(Object)|Import-(Alias|Clixml|Csv|LocalizedData|Module|PSSession)|Invoke-(Command|Expression|History|Item|RestMethod|WebRequest|WmiMethod)|Join-(Path)|Limit-(EventLog)|Measure-(Command)|Measure-(Object)|Move-(Item|ItemProperty)|New-(Alias|Event|EventLog|Item|ItemProperty|Module|ModuleManifest|Object|PSDrive|PSSession|PSSessionConfigurationFile|PSSessionOption|PSTransportOption|Service|TimeSpan|Variable|WebServiceProxy)|Out-(Default|File|GridView|Host|Null|Printer|String)|Pop-(Location)|Push-(Location)|Read-(Host)|Receive-(Job)|Receive-(PSSession)|Register-(EngineEvent|ObjectEvent|PSSessionConfiguration|WmiEvent)|Remove-(Computer|Event|EventLog|Item|ItemProperty|Job|Module|PSBreakpoint|PSDrive|PSSession|PSSnapin|TypeData|Variable|WmiObject)|Rename-(Computer|Item|ItemProperty)|Reset-(ComputerMachinePassword)|Resolve-(Path)|Restart-(Computer|Service)|Restore-(Computer)|Resume-(Job|Service)|Save-(Help)|Select-(Object|String|Xml)|Send-(MailMessage)|Set-(Alias|Content|Date|Item|ItemProperty|Location|PSBreakpoint|PSDebug|PSSessionConfiguration|Service|StrictMode|TraceSource|Variable|WmiInstance)|Show-(Command|ControlPanelItem|EventLog)|Sort-(Object)|Split-(Path)|Start-(Job|Process|Service|Sleep|Transaction)|Stop-(Computer|Job|Process|Service)|Suspend-(Job|Service)|Tee-(Object)|Test-(ComputerSecureChannel|Connection|ModuleManifest|Path|PSSessionConfigurationFile)|Trace-(Command)|Unblock-(File)|Undo-(Transaction)|Unregister-(Event|PSSessionConfiguration)|Update-(FormatData)|Update-(Help|List|TypeData)|Use-(Transaction)|Wait-(Event|Job|Process)|Where-(Object)|Write-(Debug|Error|EventLog|Host|Output|Progress|Verbose|Warning)|ac|cat|cd|chdir|clc|cli|clp|clv|compare|copy|cp|cpi|cpp|cvpa|dbp|del|diff|dir|ebp|echo|epal|epcsv|epsn|erase|fc|fl|ft|fw|gal|gbp|gc|gci|gcs|gdr|gi|gl|gm|gp|gps|group|gsv|gu|gv|gwmi|iex|ii|ipal|ipcsv|ipsn|irm|iwmi|iwr|kill|lp|ls|measure|mi|mount|move|mp|mv|nal|ndr|ni|nv|ogv|popd|ps|pushd|pwd|rbp|rd|rdr|ren|ri|rm|rmdir|rni|rnp|rp|rv|rvpa|rwmi|sal|saps|sasv|sbp|sc|select|set|shcm|si|sl|sleep|sls|sort|sp|spps|spsv|start|sv|swmi|tee|trcm|type|write)\b/i,
+        'function': [
+                /\b(Add-(Computer|Content|History|Member|PSSnapin|Type)|Checkpoint-Computer|Clear-(Content|EventLog|History|Item|ItemProperty|Variable)|Compare-Object|Complete-Transaction|Connect-PSSession|ConvertFrom-(Csv|Json|StringData)|Convert-Path|ConvertTo-(Csv|Html|Json|Xml)|Copy-(Item|ItemProperty)|Debug-Process|Disable-(ComputerRestore|PSBreakpoint|PSRemoting|PSSessionConfiguration)|Disconnect-PSSession|Enable-(ComputerRestore|PSBreakpoint|PSRemoting|PSSessionConfiguration)|Enter-PSSession|Exit-PSSession|Export-(Alias|Clixml|Console|Csv|FormatData|ModuleMember|PSSession)|ForEach-Object|Format-(Custom|List|Table|Wide)|Get-(Alias|ChildItem|Command|ComputerRestorePoint|Content|ControlPanelItem|Culture|Date|Event|EventLog|EventSubscriber|FormatData|Help|History|Host|HotFix|Item|ItemProperty|Job|Location|Member|Module|Process|PSBreakpoint|PSCallStack|PSDrive|PSProvider|PSSession|PSSessionConfiguration|PSSnapin|Random|Service|TraceSource|Transaction|TypeData|UICulture|Unique|Variable|WmiObject)|Group-Object|Import-(Alias|Clixml|Csv|LocalizedData|Module|PSSession)|Invoke-(Command|Expression|History|Item|RestMethod|WebRequest|WmiMethod)|Join-Path|Limit-EventLog|Measure-(Command|Object)|Move-(Item|ItemProperty)|New-(Alias|Event|EventLog|Item|ItemProperty|Module|ModuleManifest|Object|PSDrive|PSSession|PSSessionConfigurationFile|PSSessionOption|PSTransportOption|Service|TimeSpan|Variable|WebServiceProxy)|Out-(Default|File|GridView|Host|Null|Printer|String)|Pop-Location|Push-Location|Read-Host|Receive-(Job|PSSession)|Register-(EngineEvent|ObjectEvent|PSSessionConfiguration|WmiEvent)|Remove-(Computer|Event|EventLog|Item|ItemProperty|Job|Module|PSBreakpoint|PSDrive|PSSession|PSSnapin|TypeData|Variable|WmiObject)|Rename-(Computer|Item|ItemProperty)|Reset-ComputerMachinePassword|Resolve-Path|Restart-(Computer|Service)|Restore-Computer|Resume-(Job|Service)|Save-Help|Select-(Object|String|Xml)|Send-MailMessage|Set-(Alias|Content|Date|Item|ItemProperty|Location|PSBreakpoint|PSDebug|PSSessionConfiguration|Service|StrictMode|TraceSource|Variable|WmiInstance)|Show-(Command|ControlPanelItem|EventLog)|Sort-Object|Split-Path|Start-(Job|Process|Service|Sleep|Transaction)|Stop-(Computer|Job|Process|Service)|Suspend-(Job|Service)|Tee-Object|Test-(ComputerSecureChannel|Connection|ModuleManifest|Path|PSSessionConfigurationFile)|Trace-Command|Unblock-File|Undo-Transaction|Unregister-(Event|PSSessionConfiguration)|Update-(FormatData|Help|List|TypeData)|Use-Transaction|Wait-(Event|Job|Process)|Where-Object|Write-(Debug|Error|EventLog|Host|Output|Progress|Verbose|Warning))\b/i,
+                /\b(ac|cat|chdir|clc|cli|clp|clv|compare|copy|cp|cpi|cpp|cvpa|dbp|del|diff|dir|ebp|echo|epal|epcsv|epsn|erase|fc|fl|ft|fw|gal|gbp|gc|gci|gcs|gdr|gi|gl|gm|gp|gps|group|gsv|gu|gv|gwmi|iex|ii|ipal|ipcsv|ipsn|irm|iwmi|iwr|kill|lp|ls|measure|mi|mount|move|mp|mv|nal|ndr|ni|nv|ogv|popd|ps|pushd|pwd|rbp|rd|rdr|ren|ri|rm|rmdir|rni|rnp|rp|rv|rvpa|rwmi|sal|saps|sasv|sbp|sc|select|set|shcm|si|sl|sleep|sls|sort|sp|spps|spsv|start|sv|swmi|tee|trcm|type|write)\b/i
+        ],
+        // per http://technet.microsoft.com/en-us/library/hh847744.aspx
+        'keyword': /\b(Begin|Break|Catch|Class|Continue|Data|Define|Do|DynamicParam|Else|ElseIf|End|Exit|Filter|Finally|For|ForEach|From|Function|If|InlineScript|Parallel|Param|Process|Return|Sequence|Switch|Throw|Trap|Try|Until|Using|Var|While|Workflow)\b/i,
         'operator': {
-                pattern: /(\W)-(and|x?or|not|eq|ne|gt|ge|lt|le|Like|(Not)?(Like|Match|Contains|In)|Replace)\b/i,
+                pattern: /(\W?)(!|-(eq|ne|gt|ge|lt|le|sh[lr]|not|b?(and|x?or)|(Not)?(Like|Match|Contains|In)|Replace|Join|is(Not)?|as)\b|-[-=]?|\+[+=]?|[*\/%]=?)/i,
                 lookbehind: true
         },
         'punctuation': /[|{}[\];(),.]/
 };
-// Variable interpolation inside strings
-Prism.languages.powershell.string.inside.boolean = Prism.languages.powershell.boolean;
-Prism.languages.powershell.string.inside.variable = Prism.languages.powershell.variable;
+
+// Variable interpolation inside strings, and nested expressions
+Prism.languages.powershell.string[0].inside.boolean = Prism.languages.powershell.boolean;
+Prism.languages.powershell.string[0].inside.variable = Prism.languages.powershell.variable;
+Prism.languages.powershell.string[0].inside.function.inside = Prism.util.clone(Prism.languages.powershell);