Fix empty line substitutions (noted by Joshua Hudson).
diff --git a/editors/sed.c b/editors/sed.c
index 989df7c..709fb13 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -589,8 +589,8 @@
/* 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 */
diff --git a/sed.c b/sed.c
index 989df7c..709fb13 100644
--- a/sed.c
+++ b/sed.c
@@ -589,8 +589,8 @@
/* 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 */