nit: revert EscapeArg to global per usage outside of package

Signed-off-by: Nate Bracy <[email protected]>

Author: servusdei2018

internal/oci/runtime_syscall_exec.go

@@ -54,8 +54,8 @@ func (r syscallExec) String() string {
 	return "exec"
 }
 
-// escapeArg escapes shell metacharacters in a single command-line argument.
-func escapeArg(arg string) string {
+// EscapeArg escapes shell metacharacters in a single command-line argument.
+func EscapeArg(arg string) string {
 	if strings.ContainsAny(arg, shellMetachars) {
 		return metacharRegex.ReplaceAllString(arg, `\$1`)
 	}
@@ -67,7 +67,7 @@ func escapeArg(arg string) string {
 func Escape(args []string) []string {
 	escaped := make([]string, len(args))
 	for i := range args {
-		escaped[i] = escapeArg(args[i])
+		escaped[i] = EscapeArg(args[i])
 	}
 	return escaped
 }

internal/oci/runtime_syscall_exec_test.go

@@ -40,7 +40,7 @@ func TestEscape(t *testing.T) {
 		{
 			name:     "Slice with some Metacharacters",
 			input:    []string{"echo", "Hello World", "and", "goodbye | cat"},
-			expected: []string{"echo", `"Hello\ World"`, "and", `"goodbye\ \|\ cat"`},
+			expected: []string{"echo", `Hello\ World`, `and`, `goodbye\ \|\ cat`},
 		},
 	}