1 files changed, 120 insertions, 0 deletions
diff --git a/main/busybox/busybox-sed-3.patch b/main/busybox/busybox-sed-3.patch
new file mode 100644
index 00000000..f916ce29
--- /dev/null
+++ b/main/busybox/busybox-sed-3.patch
@@ -0,0 +1,120 @@
+diff -d -urpN busybox.2/editors/sed.c busybox.3/editors/sed.c
+--- busybox.2/editors/sed.c	2009-08-08 01:40:42.000000000 +0200
++++ busybox.3/editors/sed.c	2009-08-17 01:32:00.000000000 +0200
+@@ -589,7 +589,7 @@ static void pipe_putc(char c)
+ 
+ static void do_subst_w_backrefs(char *line, char *replace)
+ {
+-	int i,j;
++	int i, j;
+ 
+ 	/* go through the replacement string */
+ 	for (i = 0; replace[i]; i++) {
+@@ -624,23 +624,24 @@ static void do_subst_w_backrefs(char *li
+ 	}
+ }
+ 
+-static int do_subst_command(sed_cmd_t *sed_cmd, char **line)
++static int do_subst_command(sed_cmd_t *sed_cmd, char **line_p)
+ {
+-	char *oldline = *line;
++	char *line = *line_p;
+ 	int altered = 0;
+ 	unsigned match_count = 0;
+ 	regex_t *current_regex;
+ 
++	current_regex = sed_cmd->sub_match;
+ 	/* Handle empty regex. */
+-	if (sed_cmd->sub_match == NULL) {
++	if (!current_regex) {
+ 		current_regex = G.previous_regex_ptr;
+ 		if (!current_regex)
+ 			bb_error_msg_and_die("no previous regexp");
+-	} else
+-		G.previous_regex_ptr = current_regex = sed_cmd->sub_match;
++	}
++	G.previous_regex_ptr = current_regex;
+ 
+ 	/* Find the first match */
+-	if (REG_NOMATCH == regexec(current_regex, oldline, 10, G.regmatch, 0))
++	if (REG_NOMATCH == regexec(current_regex, line, 10, G.regmatch, 0))
+ 		return 0;
+ 
+ 	/* Initialize temporary output buffer. */
+@@ -657,7 +658,7 @@ static int do_subst_command(sed_cmd_t *s
+ 		   The match_count check is so not to break
+ 		   echo "hi" | busybox sed 's/^/!/g' */
+ 		if (!G.regmatch[0].rm_so && !G.regmatch[0].rm_eo && match_count) {
+-			pipe_putc(*oldline++);
++			pipe_putc(*line++);
+ 			continue;
+ 		}
+ 
+@@ -669,35 +670,41 @@ static int do_subst_command(sed_cmd_t *s
+ 		 && (sed_cmd->which_match != match_count)
+ 		) {
+ 			for (i = 0; i < G.regmatch[0].rm_eo; i++)
+-				pipe_putc(*oldline++);
++				pipe_putc(*line++);
+ 			continue;
+ 		}
+ 
+ 		/* print everything before the match */
+ 		for (i = 0; i < G.regmatch[0].rm_so; i++)
+-			pipe_putc(oldline[i]);
++			pipe_putc(line[i]);
+ 
+ 		/* then print the substitution string */
+-		do_subst_w_backrefs(oldline, sed_cmd->string);
++		do_subst_w_backrefs(line, sed_cmd->string);
+ 
+ 		/* advance past the match */
+-		oldline += G.regmatch[0].rm_eo;
++		line += G.regmatch[0].rm_eo;
+ 		/* flag that something has changed */
+ 		altered++;
+ 
+ 		/* if we're not doing this globally, get out now */
+ 		if (sed_cmd->which_match)
+ 			break;
+-	} while (*oldline && (regexec(current_regex, oldline, 10, G.regmatch, 0) != REG_NOMATCH));
+ 
+-	/* Copy rest of string into output pipeline */
++		if (*line == '\0')
++			break;
++//maybe (G.regmatch[0].rm_eo ? REG_NOTBOL : 0) instead of unconditional REG_NOTBOL?
++	} while (regexec(current_regex, line, 10, G.regmatch, REG_NOTBOL) != REG_NOMATCH);
+ 
+-	while (*oldline)
+-		pipe_putc(*oldline++);
+-	pipe_putc(0);
++	/* Copy rest of string into output pipeline */
++	while (1) {
++		char c = *line++;
++		pipe_putc(c);
++		if (c == '\0')
++			break;
++	}
+ 
+-	free(*line);
+-	*line = G.pipeline.buf;
++	free(*line_p);
++	*line_p = G.pipeline.buf;
+ 	return altered;
+ }
+ 
+diff -d -urpN busybox.2/testsuite/sed.tests busybox.3/testsuite/sed.tests
+--- busybox.2/testsuite/sed.tests	2009-08-08 01:40:44.000000000 +0200
++++ busybox.3/testsuite/sed.tests	2009-08-17 01:29:01.000000000 +0200
+@@ -241,4 +241,11 @@ testing "sed 2d;2,1p (gnu compat)" \
+ 	"third\n" "" \
+ 	"first\nsecond\nthird\nfourth\n"
+ 
++# Regex means: "match / at BOL or nothing, then one or more not-slashes".
++# The bug was that second slash in /usr/lib was treated as "at BOL" too.
++testing "sed beginning (^) matches only once" \
++	"sed 's,\(^/\|\)[^/][^/]*,>\0<,g'" \
++	">/usr</>lib<\n" "" \
++	"/usr/lib\n"
++
+ exit $FAILCOUNT