erc-truncate-buffer-on-save doc string clarification

* lisp/erc/erc-log.el (erc-truncate-buffer-on-save): Doc
clarification (bug#18207) since "truncate" is a word used by
erc-truncate to mean something else.

diff --git a/lisp/erc/erc-log.el b/lisp/erc/erc-log.el
index 3294350b6ee573e127aad392acf017e18fe20127..1dd2e0aba493ff3d96c6bd5e48e018f88eef14d9 100644 (file)
--- a/lisp/erc/erc-log.el
+++ b/lisp/erc/erc-log.el
@@ -122,7 +122,7 @@ custom function which returns the directory part and set
                 (function :tag "Other function")))
 
 (defcustom erc-truncate-buffer-on-save nil
-  "Truncate any ERC (channel, query, server) buffer when it is saved."
+  "Erase the contents of any ERC (channel, query, server) buffer when it is saved."
   :group 'erc-log
   :type 'boolean)