From 8e35a4f0d4616f11c322e63dc3ad373fe3d25e0d Mon Sep 17 00:00:00 2001
From: Alex Flint <alex.flint@gmail.com>
Date: Sun, 31 Mar 2024 10:30:12 -0400
Subject: handle explicit empty placeholders

---
 usage.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'usage.go')

diff --git a/usage.go b/usage.go
index a9f9844..43af31e 100644
--- a/usage.go
+++ b/usage.go
@@ -356,7 +356,10 @@ func (p *Parser) lookupCommand(path ...string) (*command, error) {
 }
 
 func synopsis(spec *spec, form string) string {
-	if spec.cardinality == zero {
+	// if the user omits the placeholder tag then we pick one automatically,
+	// but if the user explicitly specifies an empty placeholder then we
+	// leave out the placeholder in the help message
+	if spec.cardinality == zero || spec.placeholder == "" {
 		return form
 	}
 	return form + " " + spec.placeholder
-- 
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