mysql.cc:

  allow several -e on the command line
  clarify --help text
  make -B to work as advertised
  in force mode execute the rest of multi-statement line in case of error in one statement

client/my_readline.h

@@ -29,6 +29,6 @@ typedef struct st_line_buffer
 } LINE_BUFFER;
 
 extern LINE_BUFFER *batch_readline_init(ulong max_size,FILE *file);
-extern LINE_BUFFER *batch_readline_command(my_string str);
+extern LINE_BUFFER *batch_readline_command(LINE_BUFFER *buffer, my_string str);
 extern char *batch_readline(LINE_BUFFER *buffer);
 extern void batch_readline_end(LINE_BUFFER *buffer);

client/mysql.cc

@@ -494,7 +494,7 @@ static struct my_option my_long_options[] =
    "No automatic rehashing. One has to use 'rehash' to get table and field completion. This gives a quicker start of mysql and disables rehashing on reconnect. WARNING: options deprecated; use --disable-auto-rehash instead.",
    0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
   {"batch", 'B',
-   "Print results with a tab as separator, each row on new line. Doesn't use history file.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
+   "Don't use history file. Disable interactive behavior. (Enables --silent)", 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
   {"character-sets-dir", OPT_CHARSETS_DIR,
    "Directory where character sets are.", (gptr*) &charsets_dir,
    (gptr*) &charsets_dir, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
@@ -515,7 +515,7 @@ static struct my_option my_long_options[] =
    (gptr*) &current_db, 0, GET_STR_ALLOC, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
   {"delimiter", OPT_DELIMITER, "Delimiter to be used.", (gptr*) &delimiter_str,
    (gptr*) &delimiter_str, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
-  {"execute", 'e', "Execute command and quit. (Output like with --batch).", 0,
+  {"execute", 'e', "Execute command and quit. (Disables --force and history file)", 0,
    0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
   {"vertical", 'E', "Print the output of a query (rows) vertically.",
    (gptr*) &vertical, (gptr*) &vertical, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0,
@@ -597,7 +597,7 @@ static struct my_option my_long_options[] =
    0, 0, 0},
   {"reconnect", OPT_RECONNECT, "Reconnect if the connection is lost. Disable with --disable-reconnect. This option is enabled by default.", 
    (gptr*) &opt_reconnect, (gptr*) &opt_reconnect, 0, GET_BOOL, NO_ARG, 1, 0, 0, 0, 0, 0},
-  {"silent", 's', "Be more silent.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0,
+  {"silent", 's', "Be more silent. Print results with a tab as separator, each row on new line.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0,
    0, 0},
 #ifdef HAVE_SMEM
   {"shared_memory_base_name", OPT_SHARED_MEMORY_BASE_NAME,
@@ -755,10 +755,10 @@ get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
   case 'e':
     status.batch= 1;
     status.add_to_history= 0;
-    batch_readline_end(status.line_buff);	// If multiple -e
-    if (!(status.line_buff= batch_readline_command(argument)))
+    if (!status.line_buff)
+      ignore_errors= 0;                         // do it for the first -e only
+    if (!(status.line_buff= batch_readline_command(status.line_buff, argument)))
       return 1;
-    ignore_errors= 0;
     break;
   case 'o':
     if (argument == disabled_my_option)
@@ -798,12 +798,9 @@ get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
       verbose++;
     break;
   case 'B':
-    if (!status.batch)
-    {
     status.batch= 1;
     status.add_to_history= 0;
     opt_silent++;				// more silent
-    }
     break;
   case 'W':
 #ifdef __WIN__
@@ -1108,11 +1105,8 @@ static bool add_line(String &buffer,char *line,char *in_string,
       }
       else
       {
-	int error= com_go(&buffer, 0);
-	if (error)
-	{
-	  return error < 0 ? 0 : 1;		// < 0 is not fatal
-	}
+	if (com_go(&buffer, 0) > 0)             // < 0 is not fatal
+	  return 1;
       }
       buffer.length(0);
       out= line;

client/readline.cc

@@ -31,7 +31,8 @@ static char *intern_read_line(LINE_BUFFER *buffer,ulong *out_length);
 LINE_BUFFER *batch_readline_init(ulong max_size,FILE *file)
 {
   LINE_BUFFER *line_buff;
-  if (!(line_buff=(LINE_BUFFER*) my_malloc(sizeof(*line_buff),MYF(MY_WME))))
+  if (!(line_buff=(LINE_BUFFER*)
+        my_malloc(sizeof(*line_buff),MYF(MY_WME | MY_ZEROFILL))))
     return 0;
   if (init_line_buffer(line_buff,fileno(file),IO_SIZE,max_size))
   {
@@ -67,10 +68,11 @@ void batch_readline_end(LINE_BUFFER *line_buff)
 }
 
 
-LINE_BUFFER *batch_readline_command(my_string str)
+LINE_BUFFER *batch_readline_command(LINE_BUFFER *line_buff, my_string str)
 {
-  LINE_BUFFER *line_buff;
-  if (!(line_buff=(LINE_BUFFER*) my_malloc(sizeof(*line_buff),MYF(MY_WME))))
+  if (!line_buff)
+    if (!(line_buff=(LINE_BUFFER*)
+          my_malloc(sizeof(*line_buff),MYF(MY_WME | MY_ZEROFILL))))
       return 0;
   if (init_line_buffer_from_string(line_buff,str))
   {
@@ -88,7 +90,6 @@ LINE_BUFFER *batch_readline_command(my_string str)
 static bool
 init_line_buffer(LINE_BUFFER *buffer,File file,ulong size,ulong max_buffer)
 {
-  bzero((char*) buffer,sizeof(buffer[0]));
   buffer->file=file;
   buffer->bufread=size;
   buffer->max_size=max_buffer;
@@ -100,19 +101,26 @@ init_line_buffer(LINE_BUFFER *buffer,File file,ulong size,ulong max_buffer)
   return 0;
 }
 
-
+/*
+  init_line_buffer_from_string can be called on the same buffer
+  several times. the resulting buffer will contain a
+  concatenation of all strings separated by spaces
+*/
 static bool init_line_buffer_from_string(LINE_BUFFER *buffer,my_string str)
 {
-  uint length;
-  bzero((char*) buffer,sizeof(buffer[0]));
-  length=(uint) strlen(str);
-  if (!(buffer->buffer=buffer->start_of_line=buffer->end_of_line=
-	(char*)my_malloc(length+2,MYF(MY_FAE))))
+  uint old_length=buffer->end - buffer->buffer;
+  uint length= (uint) strlen(str);
+  if (!(buffer->buffer= buffer->start_of_line= buffer->end_of_line=
+	(char*)my_realloc(buffer->buffer, old_length+length+2,
+                          MYF(MY_FAE|MY_ALLOW_ZERO_PTR))))
     return 1;
-  memcpy(buffer->buffer,str,length);
-  buffer->buffer[length]='\n';
-  buffer->buffer[length+1]=0;
-  buffer->end=buffer->buffer+length+1;
+  buffer->end= buffer->buffer + old_length;
+  if (old_length)
+    buffer->end[-1]=' ';
+  memcpy(buffer->end, str, length);
+  buffer->end[length]= '\n';
+  buffer->end[length+1]= 0;
+  buffer->end+= length+1;
   buffer->eof=1;
   buffer->max_size=1;
   return 0;