Clear the RE_NO_EMPTY_RANGES re syntax option, as this is a less intrusive

change from the old (Emacs) behavior, and POSIX allows us to treat [z-a]
as an empty range.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/nl.c b/src/nl.c
index 7aad2e8f2..7ee57b77d 100644
--- a/src/nl.c
+++ b/src/nl.c
@@ -253,7 +253,8 @@ build_type_arg (char **typep, struct re_pattern_buffer *regexp, char *fastmap)
       regexp->allocated = 0;
       regexp->fastmap = fastmap;
       regexp->translate = NULL;
-      re_syntax_options = RE_SYNTAX_POSIX_BASIC & ~RE_CONTEXT_INVALID_DUP;
+      re_syntax_options =
+	RE_SYNTAX_POSIX_BASIC & ~RE_CONTEXT_INVALID_DUP & ~RE_NO_EMPTY_RANGES;
       errmsg = re_compile_pattern (optarg, strlen (optarg), regexp);
       if (errmsg)
 	error (EXIT_FAILURE, 0, "%s", errmsg);