Github user kxepal commented on the pull request:
https://github.com/apache/couchdb-couch-mrview/pull/29#issuecomment-143250838
```
diff --git a/src/couch_mrview_util.erl b/src/couch_mrview_util.erl
index f41aed6..69a6167 100644
--- a/src/couch_mrview_util.erl
+++ b/src/couch_mrview_util.erl
@@ -548,12 +548,28 @@ validate_args(Args) ->
{_, EKDocId1} -> EKDocId1
end,
+ GroupLevel = determine_group_level(Args),
+
Args#mrargs{
start_key_docid=SKDocId,
- end_key_docid=EKDocId
+ end_key_docid=EKDocId,
+ group=undefined,
+ group_level=GroupLevel
}.
+determine_group_level(#mrargs{group=undefined, group_level=undefined}) ->
+ 0;
+determine_group_level(#mrargs{group=false, group_level=undefined}) ->
+ 0;
+determine_group_level(#mrargs{group=false, group_level=Level}) when Level
> 0 ->
+ mrverror(<<"Can't specify group=false and group_level>0 at the same
time">>);
+determine_group_level(#mrargs{group=true, group_level=undefined}) ->
+ exact;
+determine_group_level(#mrargs{group_level=GroupLevel}) ->
+ GroupLevel.
+
+
check_range(#mrargs{start_key=undefined}, _Cmp) ->
ok;
check_range(#mrargs{end_key=undefined}, _Cmp) ->
```
That's it.
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