1 files changed, 17 insertions, 0 deletions

diff --git a/editors/sed.c b/editors/sed.c
index a0d0cf74b..5832e99a9 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -618,6 +618,15 @@ static int do_subst_command(sed_cmd_t * sed_cmd, char **line)
         do {
                 int i;
 
+                /* Work around bug in glibc regexec, demonstrated by:
+                   echo " a.b" | busybox sed 's [^ .]* x g'
+                   The match_count check is so not to break
+                   echo "hi" | busybox sed 's/^/!/g' */
+                if(!regmatch[0].rm_so && !regmatch[0].rm_eo && match_count) {
+                        pipe_putc(*(oldline++));
+                        continue;
+                }
+
                 match_count++;
 
                 /* If we aren't interested in this match, output old line to
@@ -1073,6 +1082,14 @@ extern int sed_main(int argc, char **argv)
                 bb_perror_msg_and_die("atexit");
 #endif
 
+#define LIE_TO_AUTOCONF
+#ifdef LIE_TO_AUTOCONF
+        if(argc==2 && !strcmp(argv[1],"--version")) {
+                printf("This is not GNU sed version 4.0\n");
+                exit(0);
+        }
+#endif
+
         /* do normal option parsing */
         while ((opt = getopt(argc, argv, "ne:f:")) > 0) {
                 switch (opt) {