sed: fix append command to match GNU sed 4.2.1

This closes one testcase failure

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

2 files changed, 23 insertions, 12 deletions

diff --git a/editors/sed.c b/editors/sed.c
index 7f18fd0c4..f37c37d88 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -956,13 +956,22 @@ static void puts_maybe_newline(char *s, FILE *file, char *last_puts_char, char l
         *last_puts_char = lpc;
 }
 
-static void flush_append(char *last_puts_char, char last_gets_char)
+static void flush_append(char *last_puts_char)
 {
         char *data;
 
         /* Output appended lines. */
-        while ((data = (char *)llist_pop(&G.append_head))) {
-                puts_maybe_newline(data, G.nonstdout, last_puts_char, last_gets_char);
+        while ((data = (char *)llist_pop(&G.append_head)) != NULL) {
+                /* Append command does not respect "nonterminated-ness"
+                 * of last line. Try this:
+                 * $ echo -n "woot" | sed -e '/woot/a woo' -
+                 * woot
+                 * woo
+                 * (both lines are terminated with \n)
+                 * Therefore we do not propagate "last_gets_char" here,
+                 * pass '\n' instead:
+                 */
+                puts_maybe_newline(data, G.nonstdout, last_puts_char, '\n');
                 free(data);
         }
 }
@@ -970,13 +979,13 @@ static void flush_append(char *last_puts_char, char last_gets_char)
 /* Get next line of input from G.input_file_list, flushing append buffer and
  * noting if we ran out of files without a newline on the last line we read.
  */
-static char *get_next_line(char *gets_char, char *last_puts_char, char last_gets_char)
+static char *get_next_line(char *gets_char, char *last_puts_char)
 {
         char *temp = NULL;
         int len;
         char gc;
 
-        flush_append(last_puts_char, last_gets_char);
+        flush_append(last_puts_char);
 
         /* will be returned if last line in the file
          * doesn't end with either '\n' or '\0' */
@@ -1054,7 +1063,7 @@ static void process_files(void)
         int substituted;
 
         /* Prime the pump */
-        next_line = get_next_line(&next_gets_char, &last_puts_char, '\n' /*last_gets_char*/);
+        next_line = get_next_line(&next_gets_char, &last_puts_char);
 
         /* Go through every line in each file */
  again:
@@ -1068,7 +1077,7 @@ static void process_files(void)
 
         /* Read one line in advance so we can act on the last line,
          * the '$' address */
-        next_line = get_next_line(&next_gets_char, &last_puts_char, last_gets_char);
+        next_line = get_next_line(&next_gets_char, &last_puts_char);
         linenum++;
 
         /* For every line, go through all the commands */
@@ -1295,7 +1304,7 @@ static void process_files(void)
                                 free(pattern_space);
                                 pattern_space = next_line;
                                 last_gets_char = next_gets_char;
-                                next_line = get_next_line(&next_gets_char, &last_puts_char, last_gets_char);
+                                next_line = get_next_line(&next_gets_char, &last_puts_char);
                                 substituted = 0;
                                 linenum++;
                                 break;
@@ -1331,7 +1340,7 @@ static void process_files(void)
                         pattern_space[len] = '\n';
                         strcpy(pattern_space + len+1, next_line);
                         last_gets_char = next_gets_char;
-                        next_line = get_next_line(&next_gets_char, &last_puts_char, last_gets_char);
+                        next_line = get_next_line(&next_gets_char, &last_puts_char);
                         linenum++;
                         break;
                 }
@@ -1435,7 +1444,7 @@ static void process_files(void)
 
         /* Delete and such jump here. */
  discard_line:
-        flush_append(&last_puts_char, last_gets_char);
+        flush_append(&last_puts_char /*,last_gets_char*/);
         free(pattern_space);
 
         goto again;
diff --git a/testsuite/sed.tests b/testsuite/sed.tests
index c4b6fa278..a71f8b1f0 100755
--- a/testsuite/sed.tests
+++ b/testsuite/sed.tests
@@ -135,10 +135,12 @@ testing "sed empty file plus cat" "sed -e 's/nohit//' input -" "one\ntwo" \
         "" "one\ntwo"
 testing "sed cat plus empty file" "sed -e 's/nohit//' input -" "one\ntwo" \
         "one\ntwo" ""
-test x"$SKIP_KNOWN_BUGS" = x"" && {
 testing "sed append autoinserts newline" "sed -e '/woot/a woo' -" \
         "woot\nwoo\n" "" "woot"
-}
+testing "sed append autoinserts newline 2" "sed -e '/oot/a woo' - input" \
+        "woot\nwoo\nboot\nwoo\n" "boot" "woot"
+testing "sed append autoinserts newline 3" "sed -e '/oot/a woo' -i input && cat input" \
+        "boot\nwoo\n" "boot" ""
 testing "sed insert doesn't autoinsert newline" "sed -e '/woot/i woo' -" \
         "woo\nwoot" "" "woot"
 testing "sed print autoinsert newlines" "sed -e 'p' -" "one\none" "" "one"