X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?p=finddup.git;a=blobdiff_plain;f=finddup.c;h=91079de97a4dd016709e4cefc629f1bc1b7ae15b;hp=9a6e6be0dec6009d4d012f5b25c0a7efd1dec613;hb=b1122ce4f579824cd5182f5bdd1f5c780c652d3b;hpb=574390d2a9daf2fb484baa4bae31cfc824c912f0

diff --git a/finddup.c b/finddup.c
index 9a6e6be..91079de 100644
--- a/finddup.c
+++ b/finddup.c
@@ -221,9 +221,9 @@ void start(const char *dirname1, const char *dirname2) {
   struct file_with_size *node1, *node2;
   int not_in, found;
 
-  if(dirname2[0] == '^') {
+  if(strncmp(dirname2, "not:", 4) == 0) {
     not_in = 1;
-    dirname2++;
+    dirname2 += 4;
   } else {
     not_in = 0;
   }
@@ -272,9 +272,9 @@ void start(const char *dirname1, const char *dirname2) {
 }
 
 void print_help(FILE *out) {
-  fprintf(out, "Usage: finddup [OPTION]... DIR1 [[^]DIR2]\n");
+  fprintf(out, "Usage: finddup [OPTION]... DIR1 [[not:]DIR2]\n");
   fprintf(out, "Version %s (%s)\n", VERSION_NUMBER, UNAME);
-  fprintf(out, "Without DIR2, lists duplicated files in DIR1. With DIR2, list files common to both directories. With DIR2 starting with a ^, list files found in DIR1 which do not exist in DIR2.\n");
+  fprintf(out, "Without DIR2, lists duplicate files found in DIR1. With DIR2, lists files common to both directories. With the not: prefix, lists files found in DIR1 which do not exist in DIR2.\n");
   fprintf(out, "\n");
   fprintf(out, "   -h   show this help.\n");
   fprintf(out, "   -r   show the real file paths.\n");