From 3ed79319610c39e805ce690eec970212ec27391f Mon Sep 17 00:00:00 2001
From: "Richard M. Stallman" <rms@gnu.org>
Date: Fri, 11 Jun 1993 18:32:55 +0000
Subject: [PATCH] Reinstate old -f option as an alias for -o for installed base
 uses.

---
 lib-src/etags.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib-src/etags.c b/lib-src/etags.c
index 5d0389f911..d0ba72be5e 100644
--- a/lib-src/etags.c
+++ b/lib-src/etags.c
@@ -575,7 +575,7 @@ main (argc, argv)
   for (;;)
     {
       int opt;
-      opt = getopt_long (argc, argv, "aCdDo:StTi:BFuvxwVH", longopts, 0);
+      opt = getopt_long (argc, argv, "aCdDo:f:StTi:BFuvxwVH", longopts, 0);
 
       if (opt == EOF)
 	break;
@@ -600,11 +600,12 @@ main (argc, argv)
 	case 'D':
 	  constantypedefs = 0;
 	  break;
+	case 'f':
 	case 'o':
 	  if (outfile)
 	    {
 	      fprintf (stderr,
-		       "%s: -o flag may only be given once\n", progname);
+		       "%s: -%c flag may only be given once\n", progname, opt);
 	      goto usage;
 	    }
 	  outfile = optarg;
-- 
2.20.1