add xx command to Xcode plugin. Allows quick opening of files in Xcode. (#6812)

plugins/xcode/README.md

@@ -19,7 +19,7 @@ plugins=(... xcode)
 | xcdd  | Purge all temporary build information    | rm -rf ~/Library/Developer/Xcode/DerivedData/* |
 | xcp   | Show currently selected Xcode directory  | xcode-select --print-path                      |
 | xcsel | Select different Xcode directory by path | sudo xcode-select --switch                     |
-
+| xx    | Opens the files listed in Xcode          | open -a "Xcode.app"                            |
 
 
 ## Functions
@@ -29,6 +29,10 @@ plugins=(... xcode)
 Opens the current directory in Xcode as an Xcode project. This will open one of the `.xcworkspace` and `.xcodeproj` files that it can find in the current working directory. You can also specify a directory to look in for the Xcode files.
 Returns 1 if it didn't find any relevant files.
 
+###  `xx`
+
+Opens the files listed in Xcode, multiple files are opened in a multi-file browser.
+
 ###  `simulator`
 
 Opens the iOS Simulator from your command line, dependent on whichever is the active developer directory for Xcode. (That is, it respects the `xcsel` setting.)

plugins/xcode/xcode.plugin.zsh

@@ -27,6 +27,17 @@ function xc {
   fi
 }
 
+# Opens a file or files in the Xcode IDE. Multiple files are opened in multi-file browser
+# original author: @possen
+function xx {
+  if [[ $# == 0 ]]; then
+    echo "Specify file(s) to open in xcode."
+    return 1
+  fi
+  echo "${xcode_files}"
+  open -a "Xcode.app" "$@"
+}
+
 # "XCode-SELect by Version" - select Xcode by just version number
 # Uses naming convention:
 #  - different versions of Xcode are named Xcode-<version>.app or stored