Make complection in erc use consistent casing

* lisp/erc/erc-pcomplete.el (pcomplete-erc-all-nicks): Make
case in the complection consistent (bug#18509).

Copyright-paperwork-exempt: Yes

1 files changed, 5 insertions, 3 deletions

diff --git a/lisp/erc/erc-pcomplete.el b/lisp/erc/erc-pcomplete.el
index cf3f51ba3f6..9f572396de8 100644
--- a/lisp/erc/erc-pcomplete.el
+++ b/lisp/erc/erc-pcomplete.el
@@ -238,10 +238,12 @@ If optional argument IGNORE-SELF is non-nil, don't return the current nick."
   "Returns a list of all nicks on the current server."
   (let (nicks)
     (erc-with-server-buffer
-      (maphash (lambda (nick _user)
-                 (setq nicks (cons (concat nick postfix) nicks)))
+      (maphash (lambda (_nick user)
+                 (setq nicks (cons
+                              (concat (erc-server-user-nickname user) postfix)
+                              nicks)))
                erc-server-users))
-      nicks))
+    nicks))
 
 (defun pcomplete-erc-channels ()
   "Returns a list of channels associated with the current server."