Replace index_in_[sub]str_array with index_in_[sub]strings,

which scans thru "abc\0def\0123\0\0" type strings. Saves 250 bytes.

   text    data     bss     dec     hex filename
 781266    1328   11844  794438   c1f46 busybox_old
 781010    1328   11844  794182   c1e46 busybox_unstripped

3 files changed, 35 insertions, 2 deletions

diff --git a/libbb/compare_string_array.c b/libbb/compare_string_array.c
index 077a280..e873d7c 100644
--- a/libbb/compare_string_array.c
+++ b/libbb/compare_string_array.c
@@ -19,8 +19,23 @@ int index_in_str_array(const char * const string_array[], const char *key)
 	return -1;
 }
 
+int index_in_strings(const char *strings, const char *key)
+{
+	int idx = 0;
+
+	while (strings[0]) {
+		if (strcmp(strings, key) == 0) {
+			return idx;
+		}
+		strings += strlen(strings) + 1; /* skip NUL */
+		idx++;
+	}
+	return -1;
+}
+
 /* returns the array index of the string, even if it matches only a beginning */
 /* (index of first match is returned, or -1) */
+#ifdef UNUSED
 int index_in_substr_array(const char * const string_array[], const char *key)
 {
 	int i;
@@ -34,3 +49,21 @@ int index_in_substr_array(const char * const string_array[], const char *key)
 	}
 	return -1;
 }
+#endif
+
+int index_in_substrings(const char *strings, const char *key)
+{
+	int len = strlen(key);
+
+	if (len) {
+		int idx = 0;
+		while (strings[0]) {
+			if (strncmp(strings, key, len) == 0) {
+				return idx;
+			}
+			strings += strlen(strings) + 1; /* skip NUL */
+			idx++;
+		}
+	}
+	return -1;
+}
diff --git a/libbb/dump.c b/libbb/dump.c
index 6dbbd9f..5ddbbaa 100644
--- a/libbb/dump.c
+++ b/libbb/dump.c
@@ -449,7 +449,7 @@ static const char conv_str[] =
 	"\r\\r\0"
 	"\t\\t\0"
 	"\v\\v\0"
-	"\0";
+	;
 
 
 static void conv_c(PR * pr, unsigned char * p)
diff --git a/libbb/getopt32.c b/libbb/getopt32.c
index 25eb113..1071023 100644
--- a/libbb/getopt32.c
+++ b/libbb/getopt32.c
@@ -79,7 +79,7 @@ const char *applet_long_options
         static const char applet_longopts[] =
 		//"name\0" has_arg val
 		"verbose\0" No_argument "v"
-		"\0";
+		;
         applet_long_options = applet_longopts;
 
         The last member of struct option (val) typically is set to