busybox: 1.15.1 lineedit fix

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/busybox/busybox-1.15.1-lineedit.patch

@@ -0,0 +1,156 @@
+diff -urpN busybox-1.15.1/libbb/lineedit.c busybox-1.15.1-lineedit/libbb/lineedit.c
+--- busybox-1.15.1/libbb/lineedit.c	2009-09-12 17:55:58.000000000 +0200
++++ busybox-1.15.1-lineedit/libbb/lineedit.c	2009-09-28 23:56:03.000000000 +0200
+@@ -114,8 +114,8 @@ struct lineedit_statics {
+ 	unsigned cmdedit_prmt_len; /* length of prompt (without colors etc) */
+ 
+ 	unsigned cursor;
+-	unsigned command_len;
+-	/* *int* maxsize: we want x in "if (x > S.maxsize)"
++	int command_len; /* must be signed (^D returns -1 len) */
++	/* signed maxsize: we want x in "if (x > S.maxsize)"
+ 	 * to _not_ be promoted to unsigned */
+ 	int maxsize;
+ 	CHAR_T *command_ps;
+@@ -1095,15 +1095,15 @@ static void save_command_ps_at_cur_histo
+ 		int cur = state->cur_history;
+ 		free(state->history[cur]);
+ 
+-#if ENABLE_FEATURE_ASSUME_UNICODE
++# if ENABLE_FEATURE_ASSUME_UNICODE
+ 		{
+ 			char tbuf[MAX_LINELEN];
+ 			save_string(tbuf, sizeof(tbuf));
+ 			state->history[cur] = xstrdup(tbuf);
+ 		}
+-#else
++# else
+ 		state->history[cur] = xstrdup(command_ps);
+-#endif
++# endif
+ 	}
+ }
+ 
+@@ -1131,7 +1131,7 @@ static int get_next_history(void)
+ 	return 0;
+ }
+ 
+-#if ENABLE_FEATURE_EDITING_SAVEHISTORY
++# if ENABLE_FEATURE_EDITING_SAVEHISTORY
+ /* We try to ensure that concurrent additions to the history
+  * do not overwrite each other.
+  * Otherwise shell users get unhappy.
+@@ -1256,10 +1256,10 @@ static void save_history(char *str)
+ 		free_line_input_t(st_temp);
+ 	}
+ }
+-#else
+-#define load_history(a) ((void)0)
+-#define save_history(a) ((void)0)
+-#endif /* FEATURE_COMMAND_SAVEHISTORY */
++# else
++#  define load_history(a) ((void)0)
++#  define save_history(a) ((void)0)
++# endif /* FEATURE_COMMAND_SAVEHISTORY */
+ 
+ static void remember_in_history(char *str)
+ {
+@@ -1290,15 +1290,15 @@ static void remember_in_history(char *st
+ 	/* i <= MAX_HISTORY */
+ 	state->cur_history = i;
+ 	state->cnt_history = i;
+-#if ENABLE_FEATURE_EDITING_SAVEHISTORY
++# if MAX_HISTORY > 0 && ENABLE_FEATURE_EDITING_SAVEHISTORY
+ 	if ((state->flags & SAVE_HISTORY) && state->hist_file)
+ 		save_history(str);
+-#endif
++# endif
+ 	IF_FEATURE_EDITING_FANCY_PROMPT(num_ok_lines++;)
+ }
+ 
+ #else /* MAX_HISTORY == 0 */
+-#define remember_in_history(a) ((void)0)
++# define remember_in_history(a) ((void)0)
+ #endif /* MAX_HISTORY */
+ 
+ 
+@@ -1476,11 +1476,11 @@ static void parse_and_put_prompt(const c
+ 				c = *prmt_ptr++;
+ 
+ 				switch (c) {
+-#if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
++# if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
+ 				case 'u':
+ 					pbuf = user_buf ? user_buf : (char*)"";
+ 					break;
+-#endif
++# endif
+ 				case 'h':
+ 					pbuf = free_me = safe_gethostname();
+ 					*strchrnul(pbuf, '.') = '\0';
+@@ -1488,7 +1488,7 @@ static void parse_and_put_prompt(const c
+ 				case '$':
+ 					c = (geteuid() == 0 ? '#' : '$');
+ 					break;
+-#if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
++# if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
+ 				case 'w':
+ 					/* /home/user[/something] -> ~[/something] */
+ 					pbuf = cwd_buf;
+@@ -1501,7 +1501,7 @@ static void parse_and_put_prompt(const c
+ 						pbuf = free_me = xasprintf("~%s", cwd_buf + l);
+ 					}
+ 					break;
+-#endif
++# endif
+ 				case 'W':
+ 					pbuf = cwd_buf;
+ 					cp = strrchr(pbuf, '/');
+@@ -1688,13 +1688,15 @@ int FAST_FUNC read_line_input(const char
+ 
+ 	/* With null flags, no other fields are ever used */
+ 	state = st ? st : (line_input_t*) &const_int_0;
+-#if ENABLE_FEATURE_EDITING_SAVEHISTORY
++#if MAX_HISTORY > 0
++# if ENABLE_FEATURE_EDITING_SAVEHISTORY
+ 	if ((state->flags & SAVE_HISTORY) && state->hist_file)
+ 		if (state->cnt_history == 0)
+ 			load_history(state);
+-#endif
++# endif
+ 	if (state->flags & DO_HISTORY)
+ 		state->cur_history = state->cnt_history;
++#endif
+ 
+ 	/* prepare before init handlers */
+ 	cmdedit_y = 0;  /* quasireal y, not true if line > xt*yt */
+@@ -1716,7 +1718,7 @@ int FAST_FUNC read_line_input(const char
+ 	new_settings.c_cc[VTIME] = 0;
+ 	/* Turn off CTRL-C, so we can trap it */
+ #ifndef _POSIX_VDISABLE
+-#define _POSIX_VDISABLE '\0'
++# define _POSIX_VDISABLE '\0'
+ #endif
+ 	new_settings.c_cc[VINTR] = _POSIX_VDISABLE;
+ 	tcsetattr_stdin_TCSANOW(&new_settings);
+@@ -2037,7 +2039,8 @@ int FAST_FUNC read_line_input(const char
+  rewrite_line:
+ 			/* Rewrite the line with the selected history item */
+ 			/* change command */
+-			command_len = load_string(state->history[state->cur_history] ? : "", maxsize);
++			command_len = load_string(state->history[state->cur_history] ?
++					state->history[state->cur_history] : "", maxsize);
+ 			/* redraw and go to eol (bol, in vi) */
+ 			redraw(cmdedit_y, (state->flags & VI_MODE) ? 9999 : 0);
+ 			break;
+@@ -2121,7 +2124,9 @@ int FAST_FUNC read_line_input(const char
+ #undef command
+ 
+ #if ENABLE_FEATURE_ASSUME_UNICODE
+-	command_len = save_string(command, maxsize - 1);
++	command[0] = '\0';
++	if (command_len > 0)
++		command_len = save_string(command, maxsize - 1);
+ 	free(command_ps);
+ #endif
+