Fix for windows long/short names

completion.go

@@ -91,10 +91,21 @@ func (c *completion) completeOptionNames(s *parseState, prefix string, match str
 	var results []Completion
 	repeats := map[string]bool{}
 
+	var longprefix string
+	var shortprefix string
+
+	if prefix == "/" {
+		longprefix = "/"
+		shortprefix = "/"
+	} else {
+		longprefix = "--"
+		shortprefix = "-"
+	}
+
 	for name, opt := range s.lookup.longNames {
 		if strings.HasPrefix(name, match) && !opt.Hidden {
 			results = append(results, Completion{
-				Item:        defaultLongOptDelimiter + name,
+				Item:        longprefix + name,
 				Description: opt.Description,
 			})
 
@@ -108,7 +119,7 @@ func (c *completion) completeOptionNames(s *parseState, prefix string, match str
 		for name, opt := range s.lookup.shortNames {
 			if _, exist := repeats[name]; !exist && strings.HasPrefix(name, match) && !opt.Hidden {
 				results = append(results, Completion{
-					Item:        string(defaultShortOptDelimiter) + name,
+					Item:        shortprefix + name,
 					Description: opt.Description,
 				})
 			}

completion_test.go

@@ -8,6 +8,7 @@ import (
 	"path/filepath"
 	"reflect"
 	"runtime"
+	"sort"
 	"strings"
 	"testing"
 )
@@ -81,6 +82,14 @@ type completionTest struct {
 
 var completionTests []completionTest
 
+func makeLongName(option string) string {
+	return defaultLongOptDelimiter + option
+}
+
+func makeShortName(option string) string {
+	return string(defaultShortOptDelimiter) + option
+}
+
 func init() {
 	_, sourcefile, _, _ := runtime.Caller(0)
 	completionTestSourcedir := filepath.Join(filepath.SplitList(path.Dir(sourcefile))...)
@@ -97,15 +106,15 @@ func init() {
 	completionTests = []completionTest{
 		{
 			// Short names
-			[]string{"-"},
-			[]string{"--debug", "--required", "--verbose", "--version", "-i"},
+			[]string{makeShortName("")},
+			[]string{makeLongName("debug"), makeLongName("required"), makeLongName("verbose"), makeLongName("version"), makeShortName("i")},
 			false,
 		},
 
 		{
 			// Short names full
-			[]string{"-i"},
-			[]string{"-i"},
+			[]string{makeShortName("i")},
+			[]string{makeShortName("i")},
 			false,
 		},
 
@@ -125,20 +134,20 @@ func init() {
 
 		{
 			// Long names with descriptions
-			[]string{"--"},
+			[]string{makeLongName("")},
 			[]string{
-				"--debug     # Enable debug",
-				"--required  # This is required",
-				"--verbose   # Verbose messages",
-				"--version   # Show version",
+				makeLongName("debug     # Enable debug"),
+				makeLongName("required  # This is required"),
+				makeLongName("verbose   # Verbose messages"),
+				makeLongName("version   # Show version"),
 			},
 			true,
 		},
 
 		{
 			// Long names partial
-			[]string{"--ver"},
-			[]string{"--verbose", "--version"},
+			[]string{makeLongName("ver")},
+			[]string{makeLongName("verbose"), makeLongName("version")},
 			false,
 		},
 
@@ -197,7 +206,7 @@ func init() {
 
 		{
 			// Flag filename
-			[]string{"rm", "-f", path.Join(completionTestSourcedir, "completion")},
+			[]string{"rm", makeShortName("f"), path.Join(completionTestSourcedir, "completion")},
 			completionTestFilename,
 			false,
 		},
@@ -212,21 +221,21 @@ func init() {
 		{
 			// Flag concat filename
 			[]string{"rm", "-f" + path.Join(completionTestSourcedir, "completion")},
-			[]string{"-f" + completionTestFilename[0], "-f" + completionTestFilename[1]},
+			[]string{"-f" + completionTestFilename[0], makeShortName("f") + completionTestFilename[1]},
 			false,
 		},
 
 		{
 			// Flag equal concat filename
 			[]string{"rm", "-f=" + path.Join(completionTestSourcedir, "completion")},
-			[]string{"-f=" + completionTestFilename[0], "-f=" + completionTestFilename[1]},
+			[]string{"-f=" + completionTestFilename[0], makeShortName("f=") + completionTestFilename[1]},
 			false,
 		},
 
 		{
 			// Flag concat long filename
 			[]string{"rm", "--filename=" + path.Join(completionTestSourcedir, "completion")},
-			[]string{"--filename=" + completionTestFilename[0], "--filename=" + completionTestFilename[1]},
+			[]string{"--filename=" + completionTestFilename[0], makeLongName("filename=") + completionTestFilename[1]},
 			false,
 		},
 
@@ -253,13 +262,13 @@ func init() {
 
 		{
 			// Custom completed
-			[]string{"rename", "-c", "hello un"},
+			[]string{"rename", makeShortName("c"), "hello un"},
 			[]string{"hello universe"},
 			false,
 		},
 		{
 			// Multiple flag filename
-			[]string{"add-multi-flag", "-f", filepath.Join(completionTestSourcedir, "completion")},
+			[]string{"add-multi-flag", makeShortName("f"), filepath.Join(completionTestSourcedir, "completion")},
 			completionTestFilename,
 			false,
 		},
@@ -282,6 +291,9 @@ func TestCompletion(t *testing.T) {
 			items[i] = v.Item
 		}
 
+		sort.Strings(items)
+		sort.Strings(test.Completed)
+
 		if !reflect.DeepEqual(items, test.Completed) {
 			t.Errorf("Args: %#v, %#v\n  Expected: %#v\n  Got:     %#v", test.Args, test.ShowDescriptions, test.Completed, items)
 		}

parser_test.go

@@ -101,7 +101,7 @@ func TestDefaults(t *testing.T) {
 		{
 			msg:         "non-zero value arguments, expecting overwritten arguments",
 			args:        []string{"-3=true"},
-			expectedErr: "bool flag `-3' cannot have an argument",
+			expectedErr: "bool flag `" + makeShortName("3") + "' cannot have an argument",
 		},
 		{
 			msg:  "zero value arguments, expecting overwritten arguments",