I've sent the attached patch, which implements this request vi the "-b" option, upstream for review. If I haven't heard back in the next week or two, I'll probably go ahead and include it in the next upload.
diff -urN diffstat-1.44.orig/diffstat.1 diffstat-1.44/diffstat.1
--- diffstat-1.44.orig/diffstat.1 2005-08-15 18:55:59.000000000 -0500
+++ diffstat-1.44/diffstat.1 2007-08-30 21:58:51.000000000 -0500
@@ -56,6 +56,9 @@
\fBdiffstat\fP reads the differences from the standard input.
.SH OPTIONS
.TP
+.B -b
+ignore lines matching "Binary files XXX and YYY differ" in the diff
+.TP
.B -c
prefix each line of output with "#", making it a comment-line for shell
scripts.
diff -urN diffstat-1.44.orig/diffstat.c diffstat-1.44/diffstat.c
--- diffstat-1.44.orig/diffstat.c 2007-08-26 13:59:23.000000000 -0500
+++ diffstat-1.44/diffstat.c 2007-08-30 21:58:47.000000000 -0500
@@ -275,6 +275,7 @@
static int trace_opt = 0; /* if nonzero, write debugging information */
static int sort_names = 1; /* true if we sort filenames */
static int verbose = 0; /* -q/-v options */
+static int suppress_binary = 0; /* -b option */
static long plot_scale; /* the effective scale (1:maximum) */
#ifdef HAVE_TSEARCH
@@ -1369,6 +1370,9 @@
} else if (names_only) {
printf("%s\n", name);
} else {
+ if (p->cmt == Binary && suppress_binary == 1) {
+ return;
+ }
printf("%s %-*.*s|",
comment_opt,
name_wide, name_wide,
@@ -1578,9 +1582,12 @@
max_width = 80;
- while ((j = getopt_helper(argc, argv, "cde:f:hkln:o:p:r:tuvVw:", 'h', 'V'))
+ while ((j = getopt_helper(argc, argv, "bcde:f:hkln:o:p:r:tuvVw:", 'h', 'V'))
!= -1) {
switch (j) {
+ case 'b':
+ suppress_binary = 1;
+ break;
case 'c':
comment_opt = "#";
break;
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