1A patch from Stefan M�ller to add the --downdate option, which works
2in the opposite manner as --update.
3
4To use this patch, run these commands for a successful build:
5
6    patch -p1 <patches/downdate.diff
7    ./configure                                 (optional if already run)
8    make
9
10--- old/generator.c
11+++ new/generator.c
12@@ -53,6 +53,7 @@ extern int ignore_errors;
13 extern int remove_source_files;
14 extern int delay_updates;
15 extern int update_only;
16+extern int downdate_only;
17 extern int ignore_existing;
18 extern int ignore_non_existing;
19 extern int inplace;
20@@ -1144,6 +1145,13 @@ static void recv_generator(char *fname, 
21 		return;
22 	}
23 
24+	if (downdate_only && statret == 0
25+	    && cmp_time(st.st_mtime, file->modtime) < 0) {
26+		if (verbose > 1)
27+			rprintf(FINFO, "%s is older\n", fname);
28+		return;
29+	}
30+
31 	fnamecmp = fname;
32 	fnamecmp_type = FNAMECMP_FNAME;
33 
34@@ -1452,7 +1460,7 @@ void generate_files(int f_out, struct fi
35 	phase++;
36 	csum_length = SUM_LENGTH;
37 	max_size = min_size = ignore_existing = ignore_non_existing = 0;
38-	update_only = always_checksum = size_only = 0;
39+	downdate_only = update_only = always_checksum = size_only = 0;
40 	ignore_times = 1;
41 	if (append_mode)  /* resend w/o append mode */
42 		append_mode = -1; /* ... but only longer files */
43--- old/options.c
44+++ new/options.c
45@@ -56,6 +56,7 @@ int preserve_gid = 0;
46 int preserve_times = 0;
47 int omit_dir_times = 0;
48 int update_only = 0;
49+int downdate_only = 0;
50 int cvs_exclude = 0;
51 int dry_run = 0;
52 int do_xfers = 1;
53@@ -293,6 +294,7 @@ void usage(enum logcode F)
54   rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
55   rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
56   rprintf(F," -u, --update                skip files that are newer on the receiver\n");
57+  rprintf(F," -w, --downdate              skip files that are older on the receiver\n");
58   rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
59   rprintf(F,"     --append                append data onto shorter files\n");
60   rprintf(F," -d, --dirs                  transfer directories without recursing\n");
61@@ -465,6 +467,7 @@ static struct poptOption long_options[] 
62   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
63   {"one-file-system", 'x', POPT_ARG_NONE,   0, 'x', 0, 0 },
64   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
65+  {"downdate",        'w', POPT_ARG_NONE,   &downdate_only, 0, 0, 0 },
66   {"existing",         0,  POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
67   {"ignore-non-existing",0,POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
68   {"ignore-existing",  0,  POPT_ARG_NONE,   &ignore_existing, 0, 0, 0 },
69