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authorEelco Dolstra <edolstra@gmail.com>2017-07-14T11·44+0200
committerEelco Dolstra <edolstra@gmail.com>2017-07-14T11·44+0200
commit112ff7833d4f3a233755b2fe856b2eb2b3723254 (patch)
treed07eb31bc6e67c48aa3bd1d0ddaf7f4a6e70f0e4 /src/libutil/args.cc
parent38374a9d35765a1c0b78bfeb02e6f22fc8643e83 (diff)
nix: Show help when no arguments are given
Fixes #1464.
Diffstat (limited to 'src/libutil/args.cc')
-rw-r--r--src/libutil/args.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libutil/args.cc b/src/libutil/args.cc
index df7e040875d6..0eed4945418d 100644
--- a/src/libutil/args.cc
+++ b/src/libutil/args.cc
@@ -146,7 +146,7 @@ bool Args::processArgs(const Strings & args, bool finish)
         res = true;
     }
 
-    if (finish && !expectedArgs.empty())
+    if (finish && !expectedArgs.empty() && !expectedArgs.front().optional)
         throw UsageError("more arguments are required");
 
     return res;