sed: n cmd must reset "we had successful subst" flag. closes bug 1214.

2 files changed, 9 insertions, 2 deletions

diff --git a/editors/sed.c b/editors/sed.c
index e55bcafc4..c2b9e94b6 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -865,7 +865,7 @@ static void process_files(void)
         next_line = get_next_line(&next_gets_char);
 
         /* go through every line in each file */
-again:
+ again:
         substituted = 0;
 
         /* Advance to next line.  Stop if out of lines. */
@@ -877,7 +877,7 @@ again:
          * the '$' address */
         next_line = get_next_line(&next_gets_char);
         linenum++;
-restart:
+ restart:
         /* for every line, go through all the commands */
         for (sed_cmd = G.sed_cmd_head.next; sed_cmd; sed_cmd = sed_cmd->next) {
                 int old_matched, matched;
@@ -1053,6 +1053,7 @@ restart:
                                         pattern_space = next_line;
                                         last_gets_char = next_gets_char;
                                         next_line = get_next_line(&next_gets_char);
+                                        substituted = 0;
                                         linenum++;
                                         break;
                                 }
diff --git a/testsuite/sed.tests b/testsuite/sed.tests
index 7471ed5fc..4cdbaa687 100755
--- a/testsuite/sed.tests
+++ b/testsuite/sed.tests
@@ -201,4 +201,10 @@ testing "sed s/xxx/[/" "sed -e 's/xxx/[/'" "[\n" "" "xxx\n"
 #testing "sed -g (exhaustive)" "sed -e 's/[[:space:]]*/,/g'" ",1,2,3,4,5," \
 #       "" "12345"
 
+# testing "description" "arguments" "result" "infile" "stdin"
+
+testing "sed n command must reset 'substituted' bit" \
+        "sed 's/1/x/;T;n;: next;s/3/y/;t quit;n;b next;: quit;q'" \
+        "0\nx\n2\ny\n" "" "0\n1\n2\n3\n"
+
 exit $FAILCOUNT