* lisp/subr.el (string-make-unibyte, string-make-multibyte): Obsolete.

2 files changed, 3 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 12ff21f39ae..e368ff84f81 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -738,6 +738,7 @@ instead.
 
 * Lisp Changes in Emacs 26.1
 
+** string-(to|as|make)-(uni|multi)byte are now declared obsolete.
 ** New variable 'while-no-input-ignore-events' which allow
 setting which special events 'while-no-input' should ignore.
 It is a list of symbols.
diff --git a/lisp/subr.el b/lisp/subr.el
index a6ba05c2021..a204577ddf9 100644
--- a/lisp/subr.el
+++ b/lisp/subr.el
@@ -1417,8 +1417,10 @@ be a list of the form returned by `event-start' and `event-end'."
 ;; bug#23850
 (make-obsolete 'string-to-unibyte   "use `encode-coding-string'." "26.1")
 (make-obsolete 'string-as-unibyte   "use `encode-coding-string'." "26.1")
+(make-obsolete 'string-make-unibyte   "use `encode-coding-string'." "26.1")
 (make-obsolete 'string-to-multibyte "use `decode-coding-string'." "26.1")
 (make-obsolete 'string-as-multibyte "use `decode-coding-string'." "26.1")
+(make-obsolete 'string-make-multibyte "use `decode-coding-string'." "26.1")
 
 (defun log10 (x)
   "Return (log X 10), the log base 10 of X."