ls: default to --quoting=shell-escape for output to terminal

* src/ls.c (decode_switches): Set "shell-escape" if isatty().
* doc/coreutils.texi (ls invocation): Update the defaults description.
* NEWS: Mention the change in behavior.  It should not have
backwards compat issues, but mentioning here just in case.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/ls.c b/src/ls.c
index c22c536c0..2ae548d99 100644
--- a/src/ls.c
+++ b/src/ls.c
@@ -1581,6 +1581,7 @@ decode_switches (int argc, char **argv)
       if (isatty (STDOUT_FILENO))
         {
           format = many_per_line;
+          set_quoting_style (NULL, shell_escape_quoting_style);
           /* See description of qmark_funny_chars, above.  */
           qmark_funny_chars = true;
         }