1 files changed, 8 insertions, 0 deletions
diff --git a/src/click/exceptions.py b/src/click/exceptions.py
index 9e20b3e..dfa4fa3 100644
--- a/src/click/exceptions.py
+++ b/src/click/exceptions.py
@@ -253,6 +253,14 @@ class BadArgumentUsage(UsageError):
     """
 
 
+class NoArgsIsHelpError(UsageError):
+    def __init__(self, ctx):
+        super().__init__(ctx.get_help(), ctx=ctx)
+
+    def show(self, file=None):
+        echo(self.format_message(), file=file, err=True, color=self.ctx.color)
+
+
 class FileError(ClickException):
     """Raised if a file cannot be opened."""