sed: allow 'w' cmd to use two address form

function                                             old     new   delta
add_cmd                                             1101    1094      -7

Signed-off-by: Mimi Li <felloak@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 11 insertions, 5 deletions

diff --git a/editors/sed.c b/editors/sed.c
index 42d8e17c6..070af611a 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -53,7 +53,9 @@
  * Todo:
  * - Create a wrapper around regex to make libc's regex conform with sed
  *
- * Reference http://www.opengroup.org/onlinepubs/007904975/utilities/sed.html
+ * Reference
+ * http://www.opengroup.org/onlinepubs/007904975/utilities/sed.html
+ * http://pubs.opengroup.org/onlinepubs/9699919799/utilities/sed.html
  */
 
 //usage:#define sed_trivial_usage
@@ -492,8 +494,10 @@ static const char *parse_cmd_args(sed_cmd_t *sed_cmd, const char *cmdstr)
         }
         /* handle edit cmds: (a)ppend, (i)nsert, and (c)hange */
         else if (idx <= IDX_c) { /* a,i,c */
-                if ((sed_cmd->end_line || sed_cmd->end_match) && sed_cmd->cmd != 'c')
-                        bb_error_msg_and_die("only a beginning address can be specified for edit commands");
+                if (idx < IDX_c) { /* a,i */
+                        if (sed_cmd->end_line || sed_cmd->end_match)
+                                bb_error_msg_and_die("command '%c' uses only one address", sed_cmd->cmd);
+                }
                 for (;;) {
                         if (*cmdstr == '\n' || *cmdstr == '\\') {
                                 cmdstr++;
@@ -510,8 +514,10 @@ static const char *parse_cmd_args(sed_cmd_t *sed_cmd, const char *cmdstr)
         }
         /* handle file cmds: (r)ead */
         else if (idx <= IDX_w) { /* r,w */
-                if (sed_cmd->end_line || sed_cmd->end_match)
-                        bb_error_msg_and_die("command only uses one address");
+                if (idx < IDX_w) { /* r */
+                        if (sed_cmd->end_line || sed_cmd->end_match)
+                                bb_error_msg_and_die("command '%c' uses only one address", sed_cmd->cmd);
+                }
                 cmdstr += parse_file_cmd(/*sed_cmd,*/ cmdstr, &sed_cmd->string);
                 if (sed_cmd->cmd == 'w') {
                         sed_cmd->sw_file = xfopen_for_write(sed_cmd->string);