X-Git-Url: https://code.delx.au/gnu-emacs-elpa/blobdiff_plain/1c36f7cdaf745f445c154fd5e1509703659a857b..777982049314af306a020b7de2ca6cb00b428822:/company.el

diff --git a/company.el b/company.el
index 48f41d49e..8d416de92 100644
--- a/company.el
+++ b/company.el
@@ -1199,7 +1199,7 @@ can retrieve meta-data for them."
   (unless (company-call-backend 'sorted)
     (setq candidates (sort candidates 'string<)))
   (when (company-call-backend 'duplicates)
-    (company--strip-duplicates candidates))
+    (setq candidates (company--strip-duplicates candidates)))
   candidates)
 
 (defun company--postprocess-candidates (candidates)
@@ -1210,27 +1210,37 @@ can retrieve meta-data for them."
   (company--transform-candidates candidates))
 
 (defun company--strip-duplicates (candidates)
-  (let ((c2 candidates)
-        (annos 'unk))
-    (while c2
-      (setcdr c2
-              (let ((str (pop c2)))
-                (while (let ((str2 (car c2)))
-                         (if (not (equal str str2))
-                             (progn
-                               (setq annos 'unk)
-                               nil)
-                           (when (eq annos 'unk)
-                             (setq annos (list (company-call-backend
-                                                'annotation str))))
-                           (let ((anno2 (company-call-backend
-                                         'annotation str2)))
-                             (if (member anno2 annos)
-                                 t
-                               (push anno2 annos)
-                               nil))))
-                  (pop c2))
-                c2)))))
+  (let* ((annos 'unk)
+         (str (car candidates))
+         (ref (cdr candidates))
+         res str2 anno2)
+    (while ref
+      (setq str2 (pop ref))
+      (if (not (equal str str2))
+          (progn
+            (push str res)
+            (setq str str2)
+            (setq annos 'unk))
+        (setq anno2 (company-call-backend
+                     'annotation str2))
+        (cond
+         ((null anno2))             ; Skip it.
+         ((when (eq annos 'unk)
+            (let ((ann1 (company-call-backend 'annotation str)))
+              (if (null ann1)
+                  ;; No annotation on the earlier element, drop it.
+                  t
+                (setq annos (list ann1))
+                nil)))
+          (setq annos (list anno2))
+          (setq str str2))
+         ((member anno2 annos))     ; Also skip.
+         (t
+          (push anno2 annos)
+          (push str res)            ; Maintain ordering.
+          (setq str str2)))))
+    (push str res)
+    (nreverse res)))
 
 (defun company--transform-candidates (candidates)
   (let ((c candidates))