busybox: remove the upstream-provided bugfix patch for line editing

it actually breaks the history functionality instead of fixing it

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@12763 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/busybox/patches/903-lineedit.patch

@@ -1,145 +0,0 @@
---- a/libbb/lineedit.c
-+++ b/libbb/lineedit.c
-@@ -953,24 +953,33 @@
- 
- #if MAX_HISTORY > 0
- 
-+static void save_command_ps_at_cur_history(void)
-+{
-+	if (command_ps[0] != '\0') {
-+		int cur = state->cur_history;
-+		free(state->history[cur]);
-+		state->history[cur] = xstrdup(command_ps);
-+	}
-+}
-+
- /* state->flags is already checked to be nonzero */
--static void get_previous_history(void)
-+static int get_previous_history(void)
- {
--	if (command_ps[0] != '\0' || state->history[state->cur_history] == NULL) {
--		free(state->history[state->cur_history]);
--		state->history[state->cur_history] = xstrdup(command_ps);
-+	if ((state->flags & DO_HISTORY) && state->cur_history) {
-+		save_command_ps_at_cur_history();
-+		state->cur_history--;
-+		return 1;
- 	}
--	state->cur_history--;
-+	beep();
-+	return 0;
- }
- 
- static int get_next_history(void)
- {
- 	if (state->flags & DO_HISTORY) {
--		int ch = state->cur_history;
--		if (ch < state->cnt_history) {
--			get_previous_history(); /* save the current history line */
--			state->cur_history = ch + 1;
--			return state->cur_history;
-+		if (state->cur_history < state->cnt_history) {
-+			save_command_ps_at_cur_history(); /* save the current history line */
-+			return ++state->cur_history;
- 		}
- 	}
- 	beep();
-@@ -992,6 +1001,7 @@
- 		for (hi = state->cnt_history; hi > 0;) {
- 			hi--;
- 			free(state->history[hi]);
-+			state->history[hi] = NULL;
- 		}
- 
- 		for (hi = 0; hi < MAX_HISTORY;) {
-@@ -1003,7 +1013,7 @@
- 			l = strlen(hl);
- 			if (l >= MAX_LINELEN)
- 				hl[MAX_LINELEN-1] = '\0';
--			if (l == 0 || hl[0] == ' ') {
-+			if (l == 0) {
- 				free(hl);
- 				continue;
- 			}
-@@ -1040,19 +1050,27 @@
- 
- 	if (!(state->flags & DO_HISTORY))
- 		return;
--
-+	if (str[0] == '\0')
-+		return;
- 	i = state->cnt_history;
--	free(state->history[MAX_HISTORY]);
--	state->history[MAX_HISTORY] = NULL;
--	/* After max history, remove the oldest command */
-+	/* Don't save dupes */
-+	if (i && strcmp(state->history[i-1], str) == 0)
-+		return;
-+
-+	free(state->history[MAX_HISTORY]); /* redundant, paranoia */
-+	state->history[MAX_HISTORY] = NULL; /* redundant, paranoia */
-+
-+	/* If history[] is full, remove the oldest command */
-+	/* we need to keep history[MAX_HISTORY] empty, hence >=, not > */
- 	if (i >= MAX_HISTORY) {
- 		free(state->history[0]);
- 		for (i = 0; i < MAX_HISTORY-1; i++)
- 			state->history[i] = state->history[i+1];
-+		/* i == MAX_HISTORY-1 */
- 	}
--// Maybe "if (!i || strcmp(history[i-1], command) != 0) ..."
--// (i.e. do not save dups?)
-+	/* i <= MAX_HISTORY-1 */
- 	state->history[i++] = xstrdup(str);
-+	/* i <= MAX_HISTORY */
- 	state->cur_history = i;
- 	state->cnt_history = i;
- #if ENABLE_FEATURE_EDITING_SAVEHISTORY
-@@ -1429,6 +1447,13 @@
- 		}
- 	}
- #endif
-+
-+#if 0
-+	for (ic = 0; ic <= MAX_HISTORY; ic++)
-+		bb_error_msg("history[%d]:'%s'", ic, state->history[ic]);
-+	bb_error_msg("cur_history:%d cnt_history:%d", state->cur_history, state->cnt_history);
-+#endif
-+
- 	/* Print out the command prompt */
- 	parse_and_put_prompt(prompt);
- 
-@@ -1537,11 +1562,8 @@
- 		vi_case(CTRL('P')|vbit:)
- 		vi_case('k'|vbit:)
- 			/* Control-p -- Get previous command from history */
--			if ((state->flags & DO_HISTORY) && state->cur_history > 0) {
--				get_previous_history();
-+			if (get_previous_history())
- 				goto rewrite_line;
--			}
--			beep();
- 			break;
- #endif
- 
-@@ -1730,10 +1752,8 @@
- #if MAX_HISTORY > 0
- 			case 'A':
- 				/* Up Arrow -- Get previous command from history */
--				if ((state->flags & DO_HISTORY) && state->cur_history > 0) {
--					get_previous_history();
-+				if (get_previous_history())
- 					goto rewrite_line;
--				}
- 				beep();
- 				break;
- 			case 'B':
-@@ -1743,7 +1763,7 @@
-  rewrite_line:
- 				/* Rewrite the line with the selected history item */
- 				/* change command */
--				command_len = strlen(strcpy(command, state->history[state->cur_history]));
-+				command_len = strlen(strcpy(command, state->history[state->cur_history] ? : ""));
- 				/* redraw and go to eol (bol, in vi */
- 				redraw(cmdedit_y, (state->flags & VI_MODE) ? 9999 : 0);
- 				break;