bug#33233: 27.0.50; Replace gnus-correct-length with string-width

[Eric Abrahamsen <eric@ericabrahamsen.net>]

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The one is trivially replaceable by the other, this patch defines an
obsolete alias.


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From 93e9566ee7335a148e34ecade9b716a636b5e70b Mon Sep 17 00:00:00 2001
From: Eric Abrahamsen <eric@ericabrahamsen.net>
Date: Thu, 1 Nov 2018 16:50:17 -0700
Subject: [PATCH] Obsolete gnus-correct-length in favor of string-width

* lisp/gnus/gnus-spec.el: Define an obsolete alias.
---
 lisp/gnus/gnus-spec.el | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/lisp/gnus/gnus-spec.el b/lisp/gnus/gnus-spec.el
index 379a7f2b5c..4b5f15fbc6 100644
--- a/lisp/gnus/gnus-spec.el
+++ b/lisp/gnus/gnus-spec.el
@@ -271,9 +271,7 @@ gnus-spec-tab
 	       (insert " ")))
 	 (insert-char ?  (max (- ,column (current-column)) 0))))))
 
-(defun gnus-correct-length (string)
-  "Return the correct width of STRING."
-  (apply #'+ (mapcar #'char-width string)))
+(define-obsolete-function-alias 'gnus-correct-length 'string-width "27.1")
 
 (defun gnus-correct-substring (string start &optional end)
   (let ((wstart 0)
-- 
2.19.1