contrib: Add script name to usage error in gen_wcwidth.py

contrib/ChangeLog:

	* unicode/gen_wcwidth.py: Add sys.argv[0] to usage error.

diff --git a/contrib/unicode/gen_wcwidth.py b/contrib/unicode/gen_wcwidth.py
index 02b28bcedcfd0e9219e656ae2f98f153515d2d83..aa8d8b2cfd2490c614127ac3ea78756544f83a57 100755 (executable)
--- a/contrib/unicode/gen_wcwidth.py
+++ b/contrib/unicode/gen_wcwidth.py
@@ -22,7 +22,7 @@ import sys
 import os
 
 if len(sys.argv) != 2:
-    print("usage: %s <unicode version>", file=sys.stderr)
+    print("usage: %s <unicode version>" % sys.argv[0], file=sys.stderr)
     sys.exit(1)
 unicode_version = sys.argv[1]