test, echo, printf: don't accept option abbreviation

* src/test.c (main): Directly parse accepted options, thus
avoiding abbreviations.
* src/echo.c (main): Likewise.
* src/printf.c (main): Likewise.

1 files changed, 14 insertions, 3 deletions

diff --git a/src/echo.c b/src/echo.c
index c4b7ca939..91cce86d6 100644
--- a/src/echo.c
+++ b/src/echo.c
@@ -124,9 +124,20 @@ main (int argc, char **argv)
 
   atexit (close_stdout);
 
-  if (allow_options)
-    parse_long_options (argc, argv, PROGRAM_NAME, PACKAGE_NAME, Version,
-			usage, AUTHORS, (char const *) NULL);
+  /* We directly parse options, rather than use parse_long_options, in
+     order to avoid accepting abbreviations.  */
+  if (allow_options && argc == 2)
+    {
+      if (STREQ (argv[1], "--help"))
+	usage (EXIT_SUCCESS);
+
+      if (STREQ (argv[1], "--version"))
+	{
+	  version_etc (stdout, PROGRAM_NAME, PACKAGE_NAME, Version, AUTHORS,
+		       (char *) NULL);
+	  exit (EXIT_SUCCESS);
+	}
+    }
 
   --argc;
   ++argv;