From 9e0837f2e9967b883bebf4b8928108d9199ae677 Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <iant@golang.org>
Date: Wed, 7 Oct 2020 11:15:01 -0700
Subject: syscall: restore EscapeArg behavior for empty string

Accidentally broken by CL 259978.

For #41825

Change-Id: Id663514e6eefa325faccdb66493d0bb2b3281046
Reviewed-on: https://go-review.googlesource.com/c/go/+/260397
Trust: Ian Lance Taylor <iant@golang.org>
Trust: Alex Brainman <alex.brainman@gmail.com>
Trust: Emmanuel Odeke <emm.odeke@gmail.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
---
 src/syscall/exec_windows.go | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/syscall/exec_windows.go')

diff --git a/src/syscall/exec_windows.go b/src/syscall/exec_windows.go
index 500321ef0d..4a1d74ba3f 100644
--- a/src/syscall/exec_windows.go
+++ b/src/syscall/exec_windows.go
@@ -24,6 +24,9 @@ var ForkLock sync.RWMutex
 // - finally, s is wrapped with double quotes (arg -> "arg"),
 //   but only if there is space or tab inside s.
 func EscapeArg(s string) string {
+	if len(s) == 0 {
+		return `""`
+	}
 	for i := 0; i < len(s); i++ {
 		switch s[i] {
 		case '"', '\\', ' ', '\t':
-- 
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