Fix gh gist create for multiple filenames and glob patterns

pkg/cmd/gist/create/create.go

@@ -85,7 +85,7 @@ func NewCmdCreate(f *cmdutil.Factory, runF func(*CreateOptions) error) *cobra.Co
 		},
 		Aliases: []string{"new"},
 		RunE: func(c *cobra.Command, args []string) error {
-			opts.Filenames = args
+			opts.Filenames = args[:]
 
 			if runF != nil {
 				return runF(&opts)
@@ -102,12 +102,16 @@ func NewCmdCreate(f *cmdutil.Factory, runF func(*CreateOptions) error) *cobra.Co
 }
 
 func createRun(opts *CreateOptions) error {
-	fileArgs := opts.Filenames
-	if len(fileArgs) == 0 {
-		fileArgs = []string{"-"}
+	filenames, err := cmdutil.GlobWindowsPaths(opts.Filenames)
+	if err != nil {
+		return err
 	}
 
-	files, err := processFiles(opts.IO.In, opts.FilenameOverride, fileArgs)
+	if len(filenames) == 0 {
+		filenames = []string{"-"}
+	}
+
+	files, err := processFiles(opts.IO.In, opts.FilenameOverride, filenames)
 	if err != nil {
 		return fmt.Errorf("failed to collect files for posting: %w", err)
 	}

pkg/cmd/release/shared/upload.go

@@ -4,20 +4,18 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
-	"fmt"
 	"io"
 	"mime"
 	"net/http"
 	"net/url"
 	"os"
 	"path"
-	"path/filepath"
-	"runtime"
 	"strings"
 	"time"
 
 	"github.com/cenkalti/backoff/v4"
 	"github.com/cli/cli/v2/api"
+	"github.com/cli/cli/v2/pkg/cmdutil"
 	"golang.org/x/sync/errgroup"
 )
 
@@ -39,11 +37,9 @@ type AssetForUpload struct {
 }
 
 func AssetsFromArgs(args []string) (assets []*AssetForUpload, err error) {
-	if runtime.GOOS == "windows" {
-		args, err = globAssetPatterns(args)
-		if err != nil {
-			return nil, err
-		}
+	args, err = cmdutil.GlobWindowsPaths(args)
+	if err != nil {
+		return nil, err
 	}
 	for _, arg := range args {
 		var label string
@@ -72,22 +68,6 @@ func AssetsFromArgs(args []string) (assets []*AssetForUpload, err error) {
 	return
 }
 
-func globAssetPatterns(patterns []string) ([]string, error) {
-	var assets []string
-	for _, pattern := range patterns {
-		matches, err := filepath.Glob(pattern)
-		if err != nil {
-			return nil, fmt.Errorf("%s: %s", pattern, err)
-		}
-		if len(matches) > 0 {
-			assets = append(assets, matches...)
-		} else {
-			assets = append(assets, pattern)
-		}
-	}
-	return assets, nil
-}
-
 func typeForFilename(fn string) string {
 	ext := fileExt(fn)
 	switch ext {

pkg/cmdutil/args.go

@@ -2,6 +2,8 @@ package cmdutil
 
 import (
 	"fmt"
+	"path/filepath"
+	"runtime"
 
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
@@ -57,3 +59,22 @@ func NoArgsQuoteReminder(cmd *cobra.Command, args []string) error {
 
 	return FlagErrorf("%s", errMsg)
 }
+
+func GlobWindowsPaths(patterns []string) ([]string, error) {
+	if runtime.GOOS != "windows" {
+		return patterns, nil
+	}
+	var expansions []string
+	for _, pattern := range patterns {
+		matches, err := filepath.Glob(pattern)
+		if err != nil {
+			return nil, fmt.Errorf("%s: %s", pattern, err)
+		}
+		if len(matches) > 0 {
+			expansions = append(expansions, matches...)
+		} else {
+			expansions = append(expansions, pattern)
+		}
+	}
+	return expansions, nil
+}