1 files changed, 20 insertions, 1 deletions

diff --git a/coreutils/Config.in b/coreutils/Config.in
index 50e605dc2..31e97c145 100644
--- a/coreutils/Config.in
+++ b/coreutils/Config.in
@@ -436,7 +436,7 @@ config CONFIG_SORT
         help
           sort is used to sort lines of text in specified files.
 
-config CONFIG_SORT_BIG
+config CONFIG_FEATURE_SORT_BIG
         bool "  full SuSv3 compliant sort (Support -ktcsbdfiozgM)"
         default y
         depends on CONFIG_SORT
@@ -547,6 +547,25 @@ config CONFIG_TR
           tr is used to squeeze, and/or delete characters from standard
           input, writing to standard output.
 
+config CONFIG_FEATURE_TR_CLASSES
+        bool "  Enable character classes (such as [:upper:])"
+        default n
+        depends on CONFIG_TR
+        help
+          Enable character classes, enabling commands such as:
+          tr [:upper:] [:lower:] to convert input into lowercase.
+
+config CONFIG_FEATURE_TR_EQUIV
+        bool "  Enable equivalence classes"
+        default n
+        depends on CONFIG_TR
+        help
+          Enable equivalence classes, which essentially add the enclosed
+          character to the current set. For instance, tr [=a=] xyz would
+          replace all instances of 'a' with 'xyz'. This option is mainly
+          useful for cases when no other way of expressing a character
+          is possible.
+
 if CONFIG_HUSH || CONFIG_LASH || CONFIG_MSH
         config CONFIG_TRUE
                 default y