This adds the --ignore-case option, which makes rsync compare filenames
in a case-insensitive manner.

--- orig/lib/wildmatch.c	2005-01-28 21:01:21
+++ lib/wildmatch.c	2004-08-13 16:43:27
@@ -53,6 +53,8 @@
 #define ISUPPER(c) (ISASCII(c) && isupper(c))
 #define ISXDIGIT(c) (ISASCII(c) && isxdigit(c))
 
+extern int ignore_case;
+
 #ifdef WILD_TEST_ITERATIONS
 int wildmatch_iteration_count;
 #endif
@@ -76,9 +78,19 @@ static int domatch(const uchar *p, const
 	    ch = *++p;
 	    /* FALLTHROUGH */
 	  default:
-	    if (*text != ch)
-		return FALSE;
-	    continue;
+	    if (*text == ch)
+		continue;
+	    if (ignore_case) {
+		if (ISUPPER(*text)) {
+		    if (tolower(*text) == ch)
+			continue;
+		}
+		else if (ISUPPER(ch)) {
+		    if (*text == tolower(ch))
+			continue;
+		}
+	    }
+	    return FALSE;
 	  case '?':
 	    /* Match anything but '/'. */
 	    if (*text == '/')
--- orig/options.c	2005-07-28 18:48:38
+++ options.c	2005-05-03 16:47:52
@@ -101,6 +101,7 @@ int max_delete = 0;
 OFF_T max_size = 0;
 int ignore_errors = 0;
 int modify_window = 0;
+int ignore_case = 0;
 int blocking_io = -1;
 int checksum_seed = 0;
 int inplace = 0;
@@ -332,6 +333,7 @@ void usage(enum logcode F)
   rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
   rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
   rprintf(F," -0, --from0                 all *-from/filter files are delimited by 0s\n");
+  rprintf(F,"     --ignore-case           ignore case when comparing filenames\n");
   rprintf(F,"     --address=ADDRESS       bind address for outgoing socket to daemon\n");
   rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
@@ -392,6 +394,7 @@ static struct poptOption long_options[] 
   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
+  {"ignore-case",      0,  POPT_ARG_NONE,   &ignore_case, 0, 0, 0 },
   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
   {"backup",          'b', POPT_ARG_NONE,   &make_backups, 0, 0, 0 },
@@ -1410,6 +1413,9 @@ void server_options(char **args,int *arg
 		args[ac++] = arg;
 	}
 
+	if (ignore_case)
+		args[ac++] = "--ignore-case";
+
 	if (partial_dir && am_sender) {
 		if (partial_dir != partialdir_for_delayupdate) {
 			args[ac++] = "--partial-dir";
--- orig/t_stub.c	2005-01-25 10:39:14
+++ t_stub.c	2004-08-13 17:19:56
@@ -28,6 +28,7 @@
 
 int modify_window = 0;
 int module_id = -1;
+int ignore_case = 0;
 char *partial_dir;
 struct filter_list_struct server_filter_list;
 
--- orig/util.c	2005-07-28 18:48:39
+++ util.c	2004-08-13 16:40:34
@@ -31,6 +31,7 @@ extern int verbose;
 extern int dry_run;
 extern int module_id;
 extern int modify_window;
+extern int ignore_case;
 extern char *partial_dir;
 extern struct filter_list_struct server_filter_list;
 
@@ -1029,11 +1030,23 @@ int u_strcmp(const char *cs1, const char
 {
 	const uchar *s1 = (const uchar *)cs1;
 	const uchar *s2 = (const uchar *)cs2;
+ 	
+	if (ignore_case) {
+		uchar c1, c2;
+		while (1) {
+			c1 = islower(*s1) ? toupper(*s1) : *s1;
+			c2 = islower(*s2) ? toupper(*s2) : *s2;
+			if (!c1 || c1 != c2)
+				break;
+			s1++, s2++;
+		}
 
-	while (*s1 && *s2 && (*s1 == *s2)) {
-		s1++; s2++;
+		return (int)c1 - (int)c2;
 	}
 
+	while (*s1 && *s1 == *s2)
+		s1++, s2++;
+
 	return (int)*s1 - (int)*s2;
 }
 
--- orig/wildtest.c	2004-02-07 18:40:52
+++ wildtest.c	2004-08-13 17:19:34
@@ -16,6 +16,7 @@ int fnmatch_errors = 0;
 #endif
 
 int wildmatch_errors = 0;
+int ignore_case = 0;
 
 typedef char bool;