3 files changed, 18 insertions, 2 deletions
diff --git a/src/dirdef.cpp b/src/dirdef.cpp
index a89a9e6..597875f 100644
--- a/src/dirdef.cpp
+++ b/src/dirdef.cpp
@@ -1097,3 +1097,13 @@ bool compareDirDefs(const DirDef *item1, const DirDef *item2)
 {
   return qstricmp(item1->shortName(),item2->shortName()) < 0;
 }
+
+void sortInDirList(DirList& list, DirDef *const newItem)
+{
+  auto potentialSuccessor = list.begin();
+  while (potentialSuccessor != list.cend() && compareDirDefs(*potentialSuccessor, newItem))
+  {
+    potentialSuccessor++;
+  }
+  list.insert(potentialSuccessor, newItem);
+}
diff --git a/src/dirdef.h b/src/dirdef.h
index 52af2d8..0d73dd3 100644
--- a/src/dirdef.h
+++ b/src/dirdef.h
@@ -41,6 +41,13 @@ typedef std::deque<DirDef*> DirList;
 /** Compare referenced objects. */
 bool compareDirDefs(const DirDef *item1,const DirDef *item2);
 
+/**
+ * Sorts the list by the result of the compareDirDefs() function.
+ * @param list in which item to be inserted
+ * @param newItem to be inserted
+ */
+void sortInDirList(DirList &list, DirDef *const newItem);
+
 /** A model of a directory symbol. */
 class DirDef : virtual public Definition
 {
diff --git a/src/groupdef.cpp b/src/groupdef.cpp
index 5af1cbd..e2d5b12 100644
--- a/src/groupdef.cpp
+++ b/src/groupdef.cpp
@@ -332,8 +332,7 @@ void GroupDefImpl::addDir(const DirDef *def)
   if (def->isHidden()) return;
   if (Config_getBool(SORT_BRIEF_DOCS))
   {
-    m_dirList->push_back(def);
-    m_dirList->sort();
+    sortInDirList(*m_dirList, def);
   }
   else
     m_dirList->push_back(def);