Fix empty line substitutions (noted by Joshua Hudson).

git-svn-id: svn://busybox.net/trunk/busybox@3555 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 2 insertions, 2 deletions

diff --git a/sed.c b/sed.c
index 989df7cb4..709fb13a8 100644
--- a/sed.c
+++ b/sed.c
@@ -589,8 +589,8 @@ static int do_subst_command(const struct sed_cmd *sed_cmd, char **line)
 
         /* and now, as long as we've got a line to try matching and if we can match
          * the search string, we make substitutions */
-        while (*hackline && (regexec(sed_cmd->sub_match, hackline,
-                                        sed_cmd->num_backrefs+1, regmatch, 0) == 0) ) {
+        while ((*hackline || !altered) && (regexec(sed_cmd->sub_match, hackline,
+                                        sed_cmd->num_backrefs+1, regmatch, 0) != REG_NOMATCH) ) {
                 int i;
 
                 /* print everything before the match */