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-rw-r--r--Completion/User/_groups7
1 files changed, 4 insertions, 3 deletions
diff --git a/Completion/User/_groups b/Completion/User/_groups
index b4ecab38c..185b06549 100644
--- a/Completion/User/_groups
+++ b/Completion/User/_groups
@@ -1,13 +1,14 @@
 #compdef newgrp
 
-local expl groups
+local expl groups tmp
 
 _wanted groups expl group || return 1
 
 if ! zstyle -a ":completion:${curcontext}:" groups groups; then
   (( $+_cache_groups )) ||
-      if (( ${+commands[ypcat]} )); then
-        : ${(A)_cache_groups:=${${(s: :)$(_call groups ypcat group.byname)}%%:*}} # If you use YP
+      if (( ${+commands[ypcat]} )) &&
+	  tmp=$(_call groups ypcat group.byname); then
+        : ${(A)_cache_groups:=${${(f)tmp}%%:*}} # If you use YP
       else
         : ${(A)_cache_groups:=${${(s: :)$(</etc/group)}%%:*}}
       fi