Make erc work better when encountering unknown prefix chars

* lisp/erc/erc.el (erc-channel-receive-names): Output a warning
instead of erroring out on unknown prefix chars (bug#22380).

diff --git a/lisp/erc/erc.el b/lisp/erc/erc.el
index 7b734460a3c51f69521de60f7a366b3f4af7960f..ef3a6b3b3cabc7ca9baeb8c830b7b8772a3a44e9 100644 (file)
--- a/lisp/erc/erc.el
+++ b/lisp/erc/erc.el
@@ -4832,7 +4832,7 @@ channel."
                        ((pred (eq op-ch))    op)
                        ((pred (eq adm-ch))   admin)
                        ((pred (eq own-ch))   owner)
-                       (_ (error "Unknown prefix char `%S'" ch) voice))
+                       (_ (message "Unknown prefix char `%S'" ch) voice))
                      'on)))
           (when updatep
            ;; If we didn't issue the NAMES request (consider two clients