catch some unhandled error

lib/event.coffee

@@ -10,7 +10,7 @@ emitEvent = (editor, name, args) ->
     parameters = utility.buildRequestParameters filepath, contents, filetypes
     parameters.event_name = name
     parameters[key] = value for key, value of args
-    handler.request('POST', 'event_notification', parameters)
+    handler.request('POST', 'event_notification', parameters).catch utility.notifyError()
 
 observeEditors = ->
   atom.workspace.observeTextEditors (editor) ->

lib/handler.coffee

@@ -125,8 +125,8 @@ request = (method, endpoint, parameters = null) -> prepare().then ->
         message: '[YCM] Unknown Extra Config'
         detailedMessage: message
         buttons:
-          Load: -> request 'POST', 'load_extra_conf_file', {filepath}
-          Ignore: -> request 'POST', 'ignore_extra_conf_file', {filepath}
+          Load: -> request('POST', 'load_extra_conf_file', {filepath}).catch utility.notifyError()
+          Ignore: -> request('POST', 'ignore_extra_conf_file', {filepath}).catch utility.notifyError()
 
     shouldIgnore = ->
       response.message is 'File already being parsed.'

lib/menu.coffee

@@ -29,8 +29,9 @@ runCommand = (command) ->
 register = ->
   generatedCommands = {}
   generatedMenus = []
-  for key, command of commands
-    generatedCommands["you-complete-me:#{key}"] = ((command) -> (event) -> runCommand command)(command)
+  Object.keys(commands).forEach (key) ->
+    command = commands[key]
+    generatedCommands["you-complete-me:#{key}"] = (event) -> runCommand(command).catch utility.notifyError()
     generatedMenus.push command: "you-complete-me:#{key}", label: command
   atom.commands.add 'atom-text-editor', generatedCommands
   contextMenu = atom.contextMenu.add 'atom-text-editor': [label: 'YouCompleteMe', submenu: generatedMenus]

lib/provider.coffee

@@ -14,12 +14,8 @@ module.exports =
 
   getSuggestions: (context) ->
     return [] unless utility.isEnabledForScope context.scopeDescriptor
-    getCompletions(context).catch (error) ->
-      console.error '[YCM-ERROR]', error
-      return []
+    getCompletions(context).catch utility.notifyError []
 
   lint: (editor) ->
     return [] unless utility.isEnabledForScope editor.getRootScopeDescriptor()
-    getIssues(editor).catch (error) ->
-      console.error '[YCM-ERROR]', error
-      return []
+    getIssues(editor).catch utility.notifyError []

lib/utility.coffee

@@ -46,6 +46,10 @@ isEnabledForScope = (scopeDescriptor) ->
   filetype = filetypes.find (filetype) -> enabledFiletypes.indexOf(filetype) >= 0
   return if filetype? then true else false
 
+notifyError = (result) -> (error) ->
+  atom.notifications.addError "[YCM] #{error.name}", detail: "#{error.stack}"
+  result
+
 debugLog = (category, message...) ->
   console.debug "[YCM-#{category}]", message... if atom.inDevMode()
 
@@ -55,4 +59,5 @@ module.exports =
   getScopeFiletypes: getScopeFiletypes
   buildRequestParameters: buildRequestParameters
   isEnabledForScope: isEnabledForScope
+  notifyError: notifyError
   debugLog: debugLog