Warn about non-portable use of unescaped backslash at end of string,

[platform/upstream/coreutils.git] / src / tr.c

diff --git a/src/tr.c b/src/tr.c
index 28eeac3..871542a 100644 (file)
--- a/src/tr.c
+++ b/src/tr.c
@@ -525,8 +525,9 @@ unquote (char const *s, struct E_string *es)
                }
              break;
            case '\0':
-             /* POSIX seems to require that a trailing backslash must
-                stand for itself.  Weird.  */
+             error (0, 0, _("warning: an unescaped backslash "
+                            "at end of string is not portable"));
+             /* POSIX is not clear about this.  */
              es->escaped[j] = false;
              i--;
              c = '\\';