doc: the quote operator for expr is '+', not 'quote'

diff --git a/doc/coreutils.texi b/doc/coreutils.texi
index 2d2582c..b044d0c 100644 (file)
--- a/doc/coreutils.texi
+++ b/doc/coreutils.texi
@@ -11296,7 +11296,7 @@ expr index abcdef cz
 @result{} 3
 expr index index a
 @error{} expr: syntax error
-expr index quote index a
+expr index + index a
 @result{} 0
 @end example