From 03a34e15a659ff0c2e0db9f8427bf60ba681f52d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Mart=C3=AD?= <mvdan@mvdan.cc>
Date: Sun, 27 Jan 2019 22:55:07 +0000
Subject: [PATCH] use flag.ContinueOnError to fix test -coverprofile

testscript requires zero os.Exit calls from main1.
---
 main.go | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/main.go b/main.go
index bdd1908..f5898e9 100644
--- a/main.go
+++ b/main.go
@@ -185,9 +185,16 @@ func main1() int {
 		if cmd.Name() != cmdName {
 			continue
 		}
-		cmd.Fset.Init(cmdName, flag.ExitOnError)
+		cmd.Fset.Init(cmdName, flag.ContinueOnError)
 		cmd.Fset.Usage = cmd.usage
-		cmd.Fset.Parse(args[1:])
+		if err := cmd.Fset.Parse(args[1:]); err != nil {
+			if err != flag.ErrHelp {
+				fmt.Fprintf(os.Stderr, "flag: %v\n", err)
+				cmd.Fset.Usage()
+			}
+			return 2
+		}
+
 		readConfig()
 		if err := cmd.Run(cmd.Fset.Args()); err != nil {
 			fmt.Fprintf(os.Stderr, "%s: %v\n", cmdName, err)