(main): Pass the -u option to sort in ctags mode.

1 files changed, 5 insertions, 2 deletions

diff --git a/lib-src/etags.c b/lib-src/etags.c
index bab09d77bac..00c4d0cc22e 100644
--- a/lib-src/etags.c
+++ b/lib-src/etags.c
@@ -1460,8 +1460,11 @@ main (argc, argv)
   if (CTAGS)
     if (append_to_tagfile || update)
       {
-        char cmd[2*BUFSIZ+10];
-        sprintf (cmd, "sort -o %.*s %.*s", BUFSIZ, tagfile, BUFSIZ, tagfile);
+        char cmd[2*BUFSIZ+20];
+        /* Maybe these should be used:
+           setenv ("LC_COLLATE", "C", 1);
+           setenv ("LC_ALL", "C", 1); */
+        sprintf (cmd, "sort -u -o %.*s %.*s", BUFSIZ, tagfile, BUFSIZ, tagfile);
         exit (system (cmd));
       }
   return EXIT_SUCCESS;