shell_completion.py: Add support for zsh completion

src/click/shell_completion.py

@@ -23,10 +23,6 @@
                    COMP_CWORD=$COMP_CWORD \\
                    %(autocomplete_var)s=complete $1 )
 
-    # if [[ -z $response ]]; then
-    #     COMPREPLY=""
-    # fi
-
     for completion in $response; do
         IFS=',' read type value <<< "$completion"
         if [[ $type == 'dir' ]]; then
@@ -64,11 +60,17 @@
                         %(autocomplete_var)s=\"complete_zsh\" \\
                         %(script_names)s )}")
 
-    for key descr in ${(kv)response}; do
-      if [[ "$descr" == "_" ]]; then
+    for type key descr in ${response}; do
+      if [[ "$type" == "plain" ]]; then
+        if [[ "$descr" == "_" ]]; then
           completions+=("$key")
-      else
+        else
           completions_with_descriptions+=("$key":"$descr")
+        fi
+      elif [[ "$type" == "dir" ]]; then
+        _path_files -/
+      elif [[ "$type" == "file" ]]; then
+        _path_files -f
       fi
     done
 
@@ -205,6 +207,7 @@ def complete(self):
 
         completions = do_complete(self.cli, self.prog_name, args, incomplete)
         for item in completions:
+            echo(item[0])
             echo(item[1])
             echo(item[2] if item[2] else "_")