Avoid signaling errors in emoji.el on empty input

* lisp/international/emoji.el (emoji--read-emoji):  Signal
user-error on empty input.  (Bug#68671)

Do not merge to master.

diff --git a/lisp/international/emoji.el b/lisp/international/emoji.el
index 8134214bba5df858af052b2accf5d8a4dcda4a18..3bb5c36e4c7a9b1adc74b4f8a90eb148dcc2e8ee 100644 (file)
--- a/lisp/international/emoji.el
+++ b/lisp/international/emoji.el
@@ -680,11 +680,12 @@ We prefer the earliest unique letter."
                            strings))))
               (complete-with-action action table string pred)))
            nil t)))
-    (when (cl-plusp (length name))
-      (let ((glyph (if emoji-alternate-names
-                       (cadr (split-string name "\t"))
-                     (gethash name emoji--all-bases))))
-        (cons glyph (gethash glyph emoji--derived))))))
+    (if (cl-plusp (length name))
+        (let ((glyph (if emoji-alternate-names
+                         (cadr (split-string name "\t"))
+                       (gethash name emoji--all-bases))))
+          (cons glyph (gethash glyph emoji--derived)))
+      (user-error "You didn't specify an emoji"))))
 
 (defun emoji--choose-emoji ()
   (pcase-let ((`(,glyph . ,derived) (emoji--read-emoji)))