From f47a7283d73c6c07173d9baaf46d66a92c3645b6 Mon Sep 17 00:00:00 2001
From: Yuya KAMATAKI <kamataki@rumginger.org>
Date: Sat, 27 Jun 2026 15:17:08 +0900
Subject: [PATCH] =?UTF-8?q?Fix=20#1:=20errcheck=E3=81=AE=E8=AD=A6=E5=91=8A?=
 =?UTF-8?q?=E3=81=8C=E5=87=BA=E3=81=AA=E3=81=84=E3=82=88=E3=81=86=E3=81=AB?=
 =?UTF-8?q?=E5=AF=BE=E5=BF=9C?=
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Errorを返却している箇所でエラーチェックを行わない場合に出る警告に対応。
ハンドリング不要のため、明示的に`_`に代入するように修正。
---
 cmd/dataxl/main.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cmd/dataxl/main.go b/cmd/dataxl/main.go
index 957ccbc..af25a8c 100644
--- a/cmd/dataxl/main.go
+++ b/cmd/dataxl/main.go
@@ -52,7 +52,7 @@ func run(args []string, stdin io.Reader, stdout, stderr io.Writer) error {
 	fs.StringVar(&opt.sheet, "sheet", "Sheet1", "worksheet name for xlsx input/output")
 	fs.BoolVar(&opt.pretty, "pretty", true, "pretty-print structured output")
 	fs.Usage = func() {
-		fmt.Fprintln(stderr, `Usage:
+		_, _ = fmt.Fprintln(stderr, `Usage:
   dataxl -from yaml -to tsv -i input.yaml -o output.tsv
   dataxl -from tsv -to json < paste-from-excel.tsv
   dataxl -from json -to xlsx -i data.json -o data.xlsx
@@ -150,7 +150,7 @@ func writeOutput(path string, stdout io.Writer, data []byte) error {
 		_, err := stdout.Write(data)
 		return err
 	}
-	return os.WriteFile(path, data, 0644)
+	return os.WriteFile(path, data, 0o644)
 }
 
 func normalizeFormat(format string) string {