Merge remote-tracking branch 'origin' into fix-actions-help

README.md

@@ -14,13 +14,12 @@ GitHub CLI is available for repositories hosted on GitHub.com and GitHub Enterpr
 
 If anything feels off, or if you feel that some functionality is missing, please check out the [contributing page][contributing]. There you will find instructions for sharing your feedback, building the tool locally, and submitting pull requests to the project.
 
-
 <!-- this anchor is linked to from elsewhere, so avoid renaming it -->
 ## Installation
 
 ### macOS
 
-`gh` is available via [Homebrew][], [MacPorts][], and as a downloadable binary from the [releases page][].
+`gh` is available via [Homebrew][], [MacPorts][], [Conda][], and as a downloadable binary from the [releases page][].
 
 #### Homebrew
 
@@ -34,16 +33,23 @@ If anything feels off, or if you feel that some functionality is missing, please
 | ---------------------- | ---------------------------------------------- |
 | `sudo port install gh` | `sudo port selfupdate && sudo port upgrade gh` |
 
+#### Conda
+
+| Install:                                 | Upgrade:                                |
+|------------------------------------------|-----------------------------------------|
+| `conda install gh --channel conda-forge` | `conda update gh --channel conda-forge` |
+
+Additional Conda installation options available on the [gh-feedstock page](https://github.com/conda-forge/gh-feedstock#installing-gh).
+
 ### Linux
 
-`gh` is available via [Homebrew](#homebrew), and as downloadable binaries from the [releases page][].
+`gh` is available via [Homebrew](#homebrew), [Conda](#Conda), and as downloadable binaries from the [releases page][].
 
 For more information and distro-specific instructions, see the [Linux installation docs](./docs/install_linux.md).
 
 ### Windows
 
-`gh` is available via [WinGet][], [scoop][], [Chocolatey][], and as downloadable MSI.
-
+`gh` is available via [WinGet][], [scoop][], [Chocolatey][], [Conda](#Conda), and as downloadable MSI.
 
 #### WinGet
 
@@ -86,13 +92,13 @@ what an official GitHub CLI tool can look like with a fundamentally different de
 tools bring GitHub to the terminal, `hub` behaves as a proxy to `git`, and `gh` is a standalone
 tool. Check out our [more detailed explanation][gh-vs-hub] to learn more.
 
-
 [manual]: https://cli.github.com/manual/
 [Homebrew]: https://brew.sh
 [MacPorts]: https://www.macports.org
 [winget]: https://github.com/microsoft/winget-cli
 [scoop]: https://scoop.sh
 [Chocolatey]: https://chocolatey.org
+[Conda]: https://docs.conda.io/en/latest/
 [releases page]: https://github.com/cli/cli/releases/latest
 [hub]: https://github.com/github/hub
 [contributing]: ./.github/CONTRIBUTING.md

cmd/gh/main.go

@@ -93,15 +93,6 @@ func mainRun() exitCode {
 		return exitError
 	}
 
-	if prompt, _ := cfg.Get("", "prompt"); prompt == "disabled" {
-		cmdFactory.IOStreams.SetNeverPrompt(true)
-	}
-	if ghPager, ghPagerExists := os.LookupEnv("GH_PAGER"); ghPagerExists {
-		cmdFactory.IOStreams.SetPager(ghPager)
-	} else if pager, _ := cfg.Get("", "pager"); pager != "" {
-		cmdFactory.IOStreams.SetPager(pager)
-	}
-
 	// TODO: remove after FromFullName has been revisited
 	if host, err := cfg.DefaultHost(); err == nil {
 		ghrepo.SetDefaultHost(host)
@@ -181,15 +172,7 @@ func mainRun() exitCode {
 		// enable `--repo` override
 		if cmd.Flags().Lookup("repo") != nil {
 			repoOverride, _ := cmd.Flags().GetString("repo")
-			if repoFromEnv := os.Getenv("GH_REPO"); repoOverride == "" && repoFromEnv != "" {
-				repoOverride = repoFromEnv
-			}
-			if repoOverride != "" {
-				// FIXME: reimplement the repo override to avoid having to mutate the factory
-				cmdFactory.BaseRepo = func() (ghrepo.Interface, error) {
-					return ghrepo.FromFullName(repoOverride)
-				}
-			}
+			cmdFactory.BaseRepo = cmdutil.OverrideBaseRepoFunc(cmdFactory, repoOverride)
 		}
 
 		return nil

pkg/cmd/factory/default.go

@@ -6,6 +6,8 @@ import (
 	"net/http"
 	"os"
 
+	"github.com/cli/cli/api"
+	"github.com/cli/cli/context"
 	"github.com/cli/cli/git"
 	"github.com/cli/cli/internal/config"
 	"github.com/cli/cli/internal/ghrepo"
@@ -14,11 +16,93 @@ import (
 )
 
 func New(appVersion string) *cmdutil.Factory {
-	io := iostreams.System()
+	f := &cmdutil.Factory{
+		Config:     configFunc(), // No factory dependencies
+		Branch:     branchFunc(), // No factory dependencies
+		Executable: executable(), // No factory dependencies
+	}
 
+	f.IOStreams = ioStreams(f)                   // Depends on Config
+	f.HttpClient = httpClientFunc(f, appVersion) // Depends on Config, IOStreams, and appVersion
+	f.Remotes = remotesFunc(f)                   // Depends on Config
+	f.BaseRepo = BaseRepoFunc(f)                 // Depends on Remotes
+	f.Browser = browser(f)                       // Depends on IOStreams
+
+	return f
+}
+
+func BaseRepoFunc(f *cmdutil.Factory) func() (ghrepo.Interface, error) {
+	return func() (ghrepo.Interface, error) {
+		remotes, err := f.Remotes()
+		if err != nil {
+			return nil, err
+		}
+		return remotes[0], nil
+	}
+}
+
+func SmartBaseRepoFunc(f *cmdutil.Factory) func() (ghrepo.Interface, error) {
+	return func() (ghrepo.Interface, error) {
+		httpClient, err := f.HttpClient()
+		if err != nil {
+			return nil, err
+		}
+
+		apiClient := api.NewClientFromHTTP(httpClient)
+
+		remotes, err := f.Remotes()
+		if err != nil {
+			return nil, err
+		}
+		repoContext, err := context.ResolveRemotesToRepos(remotes, apiClient, "")
+		if err != nil {
+			return nil, err
+		}
+		baseRepo, err := repoContext.BaseRepo(f.IOStreams)
+		if err != nil {
+			return nil, err
+		}
+
+		return baseRepo, nil
+	}
+}
+
+func remotesFunc(f *cmdutil.Factory) func() (context.Remotes, error) {
+	rr := &remoteResolver{
+		readRemotes: git.Remotes,
+		getConfig:   f.Config,
+	}
+	return rr.Resolver()
+}
+
+func httpClientFunc(f *cmdutil.Factory, appVersion string) func() (*http.Client, error) {
+	return func() (*http.Client, error) {
+		io := f.IOStreams
+		cfg, err := f.Config()
+		if err != nil {
+			return nil, err
+		}
+		return NewHTTPClient(io, cfg, appVersion, true), nil
+	}
+}
+
+func browser(f *cmdutil.Factory) cmdutil.Browser {
+	io := f.IOStreams
+	return cmdutil.NewBrowser(os.Getenv("BROWSER"), io.Out, io.ErrOut)
+}
+
+func executable() string {
+	gh := "gh"
+	if exe, err := os.Executable(); err == nil {
+		gh = exe
+	}
+	return gh
+}
+
+func configFunc() func() (config.Config, error) {
 	var cachedConfig config.Config
 	var configError error
-	configFunc := func() (config.Config, error) {
+	return func() (config.Config, error) {
 		if cachedConfig != nil || configError != nil {
 			return cachedConfig, configError
 		}
@@ -30,45 +114,38 @@ func New(appVersion string) *cmdutil.Factory {
 		cachedConfig = config.InheritEnv(cachedConfig)
 		return cachedConfig, configError
 	}
+}
 
-	rr := &remoteResolver{
-		readRemotes: git.Remotes,
-		getConfig:   configFunc,
-	}
-	remotesFunc := rr.Resolver()
-
-	ghExecutable := "gh"
-	if exe, err := os.Executable(); err == nil {
-		ghExecutable = exe
-	}
-
-	return &cmdutil.Factory{
-		IOStreams: io,
-		Config:    configFunc,
-		Remotes:   remotesFunc,
-		HttpClient: func() (*http.Client, error) {
-			cfg, err := configFunc()
-			if err != nil {
-				return nil, err
-			}
-
-			return NewHTTPClient(io, cfg, appVersion, true), nil
-		},
-		BaseRepo: func() (ghrepo.Interface, error) {
-			remotes, err := remotesFunc()
-			if err != nil {
-				return nil, err
-			}
-			return remotes[0], nil
-		},
-		Branch: func() (string, error) {
-			currentBranch, err := git.CurrentBranch()
-			if err != nil {
-				return "", fmt.Errorf("could not determine current branch: %w", err)
-			}
-			return currentBranch, nil
-		},
-		Executable: ghExecutable,
-		Browser:    cmdutil.NewBrowser(os.Getenv("BROWSER"), io.Out, io.ErrOut),
+func branchFunc() func() (string, error) {
+	return func() (string, error) {
+		currentBranch, err := git.CurrentBranch()
+		if err != nil {
+			return "", fmt.Errorf("could not determine current branch: %w", err)
+		}
+		return currentBranch, nil
 	}
 }
+
+func ioStreams(f *cmdutil.Factory) *iostreams.IOStreams {
+	io := iostreams.System()
+	cfg, err := f.Config()
+	if err != nil {
+		return io
+	}
+
+	if prompt, _ := cfg.Get("", "prompt"); prompt == "disabled" {
+		io.SetNeverPrompt(true)
+	}
+
+	// Pager precedence
+	// 1. GH_PAGER
+	// 2. pager from config
+	// 3. PAGER
+	if ghPager, ghPagerExists := os.LookupEnv("GH_PAGER"); ghPagerExists {
+		io.SetPager(ghPager)
+	} else if pager, _ := cfg.Get("", "pager"); pager != "" {
+		io.SetPager(pager)
+	}
+
+	return io
+}

pkg/cmd/factory/default_test.go

@@ -0,0 +1,391 @@
+package factory
+
+import (
+	"net/url"
+	"os"
+	"testing"
+
+	"github.com/MakeNowJust/heredoc"
+	"github.com/cli/cli/git"
+	"github.com/cli/cli/internal/config"
+	"github.com/cli/cli/pkg/cmdutil"
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_BaseRepo(t *testing.T) {
+	orig_GH_HOST := os.Getenv("GH_HOST")
+	t.Cleanup(func() {
+		os.Setenv("GH_HOST", orig_GH_HOST)
+	})
+
+	tests := []struct {
+		name       string
+		remotes    git.RemoteSet
+		config     config.Config
+		override   string
+		wantsErr   bool
+		wantsName  string
+		wantsOwner string
+		wantsHost  string
+	}{
+		{
+			name: "matching remote",
+			remotes: git.RemoteSet{
+				git.NewRemote("origin", "https://nonsense.com/owner/repo.git"),
+			},
+			config:     defaultConfig(),
+			wantsName:  "repo",
+			wantsOwner: "owner",
+			wantsHost:  "nonsense.com",
+		},
+		{
+			name: "no matching remote",
+			remotes: git.RemoteSet{
+				git.NewRemote("origin", "https://test.com/owner/repo.git"),
+			},
+			config:   defaultConfig(),
+			wantsErr: true,
+		},
+		{
+			name: "override with matching remote",
+			remotes: git.RemoteSet{
+				git.NewRemote("origin", "https://test.com/owner/repo.git"),
+			},
+			config:     defaultConfig(),
+			override:   "test.com",
+			wantsName:  "repo",
+			wantsOwner: "owner",
+			wantsHost:  "test.com",
+		},
+		{
+			name: "override with no matching remote",
+			remotes: git.RemoteSet{
+				git.NewRemote("origin", "https://nonsense.com/owner/repo.git"),
+			},
+			config:   defaultConfig(),
+			override: "test.com",
+			wantsErr: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if tt.override != "" {
+				os.Setenv("GH_HOST", tt.override)
+			} else {
+				os.Unsetenv("GH_HOST")
+			}
+			f := New("1")
+			rr := &remoteResolver{
+				readRemotes: func() (git.RemoteSet, error) {
+					return tt.remotes, nil
+				},
+				getConfig: func() (config.Config, error) {
+					return tt.config, nil
+				},
+			}
+			f.Remotes = rr.Resolver()
+			f.BaseRepo = BaseRepoFunc(f)
+			repo, err := f.BaseRepo()
+			if tt.wantsErr {
+				assert.Error(t, err)
+				return
+			}
+			assert.NoError(t, err)
+			assert.Equal(t, tt.wantsName, repo.RepoName())
+			assert.Equal(t, tt.wantsOwner, repo.RepoOwner())
+			assert.Equal(t, tt.wantsHost, repo.RepoHost())
+		})
+	}
+}
+
+func Test_SmartBaseRepo(t *testing.T) {
+	pu, _ := url.Parse("https://test.com/newowner/newrepo.git")
+	orig_GH_HOST := os.Getenv("GH_HOST")
+	t.Cleanup(func() {
+		os.Setenv("GH_HOST", orig_GH_HOST)
+	})
+
+	tests := []struct {
+		name       string
+		remotes    git.RemoteSet
+		config     config.Config
+		override   string
+		wantsErr   bool
+		wantsName  string
+		wantsOwner string
+		wantsHost  string
+	}{
+		{
+			name: "override with matching remote",
+			remotes: git.RemoteSet{
+				git.NewRemote("origin", "https://test.com/owner/repo.git"),
+			},
+			config:     defaultConfig(),
+			override:   "test.com",
+			wantsName:  "repo",
+			wantsOwner: "owner",
+			wantsHost:  "test.com",
+		},
+		{
+			name: "override with matching remote and base resolution",
+			remotes: git.RemoteSet{
+				&git.Remote{Name: "origin",
+					Resolved: "base",
+					FetchURL: pu,
+					PushURL:  pu},
+			},
+			config:     defaultConfig(),
+			override:   "test.com",
+			wantsName:  "newrepo",
+			wantsOwner: "newowner",
+			wantsHost:  "test.com",
+		},
+		{
+			name: "override with matching remote and nonbase resolution",
+			remotes: git.RemoteSet{
+				&git.Remote{Name: "origin",
+					Resolved: "johnny/test",
+					FetchURL: pu,
+					PushURL:  pu},
+			},
+			config:     defaultConfig(),
+			override:   "test.com",
+			wantsName:  "test",
+			wantsOwner: "johnny",
+			wantsHost:  "test.com",
+		},
+		{
+			name: "override with no matching remote",
+			remotes: git.RemoteSet{
+				git.NewRemote("origin", "https://example.com/owner/repo.git"),
+			},
+			config:   defaultConfig(),
+			override: "test.com",
+			wantsErr: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if tt.override != "" {
+				os.Setenv("GH_HOST", tt.override)
+			} else {
+				os.Unsetenv("GH_HOST")
+			}
+			f := New("1")
+			rr := &remoteResolver{
+				readRemotes: func() (git.RemoteSet, error) {
+					return tt.remotes, nil
+				},
+				getConfig: func() (config.Config, error) {
+					return tt.config, nil
+				},
+			}
+			f.Remotes = rr.Resolver()
+			f.BaseRepo = SmartBaseRepoFunc(f)
+			repo, err := f.BaseRepo()
+			if tt.wantsErr {
+				assert.Error(t, err)
+				return
+			}
+			assert.NoError(t, err)
+			assert.Equal(t, tt.wantsName, repo.RepoName())
+			assert.Equal(t, tt.wantsOwner, repo.RepoOwner())
+			assert.Equal(t, tt.wantsHost, repo.RepoHost())
+		})
+	}
+}
+
+// Defined in pkg/cmdutil/repo_override.go but test it along with other BaseRepo functions
+func Test_OverrideBaseRepo(t *testing.T) {
+	orig_GH_HOST := os.Getenv("GH_REPO")
+	t.Cleanup(func() {
+		os.Setenv("GH_REPO", orig_GH_HOST)
+	})
+
+	tests := []struct {
+		name        string
+		remotes     git.RemoteSet
+		config      config.Config
+		envOverride string
+		argOverride string
+		wantsErr    bool
+		wantsName   string
+		wantsOwner  string
+		wantsHost   string
+	}{
+		{
+			name:        "override from argument",
+			argOverride: "override/test",
+			wantsHost:   "github.com",
+			wantsOwner:  "override",
+			wantsName:   "test",
+		},
+		{
+			name:        "override from environment",
+			envOverride: "somehost.com/override/test",
+			wantsHost:   "somehost.com",
+			wantsOwner:  "override",
+			wantsName:   "test",
+		},
+		{
+			name: "no override",
+			remotes: git.RemoteSet{
+				git.NewRemote("origin", "https://nonsense.com/owner/repo.git"),
+			},
+			config:     defaultConfig(),
+			wantsHost:  "nonsense.com",
+			wantsOwner: "owner",
+			wantsName:  "repo",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if tt.envOverride != "" {
+				os.Setenv("GH_REPO", tt.envOverride)
+			} else {
+				os.Unsetenv("GH_REPO")
+			}
+			f := New("1")
+			rr := &remoteResolver{
+				readRemotes: func() (git.RemoteSet, error) {
+					return tt.remotes, nil
+				},
+				getConfig: func() (config.Config, error) {
+					return tt.config, nil
+				},
+			}
+			f.Remotes = rr.Resolver()
+			f.BaseRepo = cmdutil.OverrideBaseRepoFunc(f, tt.argOverride)
+			repo, err := f.BaseRepo()
+			if tt.wantsErr {
+				assert.Error(t, err)
+				return
+			}
+			assert.NoError(t, err)
+			assert.Equal(t, tt.wantsName, repo.RepoName())
+			assert.Equal(t, tt.wantsOwner, repo.RepoOwner())
+			assert.Equal(t, tt.wantsHost, repo.RepoHost())
+		})
+	}
+}
+
+func Test_ioStreams_pager(t *testing.T) {
+	tests := []struct {
+		name      string
+		env       map[string]string
+		config    config.Config
+		wantPager string
+	}{
+		{
+			name: "GH_PAGER and PAGER set",
+			env: map[string]string{
+				"GH_PAGER": "GH_PAGER",
+				"PAGER":    "PAGER",
+			},
+			wantPager: "GH_PAGER",
+		},
+		{
+			name: "GH_PAGER and config pager set",
+			env: map[string]string{
+				"GH_PAGER": "GH_PAGER",
+			},
+			config:    pagerConfig(),
+			wantPager: "GH_PAGER",
+		},
+		{
+			name: "config pager and PAGER set",
+			env: map[string]string{
+				"PAGER": "PAGER",
+			},
+			config:    pagerConfig(),
+			wantPager: "CONFIG_PAGER",
+		},
+		{
+			name: "only PAGER set",
+			env: map[string]string{
+				"PAGER": "PAGER",
+			},
+			wantPager: "PAGER",
+		},
+		{
+			name: "GH_PAGER set to blank string",
+			env: map[string]string{
+				"GH_PAGER": "",
+				"PAGER":    "PAGER",
+			},
+			wantPager: "",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if tt.env != nil {
+				for k, v := range tt.env {
+					old := os.Getenv(k)
+					os.Setenv(k, v)
+					if k == "GH_PAGER" {
+						defer os.Unsetenv(k)
+					} else {
+						defer os.Setenv(k, old)
+					}
+				}
+			}
+			f := New("1")
+			if tt.config != nil {
+				f.Config = func() (config.Config, error) {
+					return tt.config, nil
+				}
+			}
+			io := ioStreams(f)
+			assert.Equal(t, tt.wantPager, io.GetPager())
+		})
+	}
+}
+
+func Test_ioStreams_prompt(t *testing.T) {
+	tests := []struct {
+		name           string
+		config         config.Config
+		promptDisabled bool
+	}{
+		{
+			name:           "default config",
+			promptDisabled: false,
+		},
+		{
+			name:           "config with prompt disabled",
+			config:         disablePromptConfig(),
+			promptDisabled: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			f := New("1")
+			if tt.config != nil {
+				f.Config = func() (config.Config, error) {
+					return tt.config, nil
+				}
+			}
+			io := ioStreams(f)
+			assert.Equal(t, tt.promptDisabled, io.GetNeverPrompt())
+		})
+	}
+}
+
+func defaultConfig() config.Config {
+	return config.InheritEnv(config.NewFromString(heredoc.Doc(`
+    hosts:
+      nonsense.com:
+        oauth_token: BLAH
+		`)))
+}
+
+func pagerConfig() config.Config {
+	return config.NewFromString("pager: CONFIG_PAGER")
+}
+
+func disablePromptConfig() config.Config {
+	return config.NewFromString("prompt: disabled")
+}

pkg/cmd/root/root.go

@@ -4,9 +4,6 @@ import (
 	"net/http"
 
 	"github.com/MakeNowJust/heredoc"
-	"github.com/cli/cli/api"
-	"github.com/cli/cli/context"
-	"github.com/cli/cli/internal/ghrepo"
 	actionsCmd "github.com/cli/cli/pkg/cmd/actions"
 	aliasCmd "github.com/cli/cli/pkg/cmd/alias"
 	apiCmd "github.com/cli/cli/pkg/cmd/api"
@@ -93,7 +90,7 @@ func NewCmdRoot(f *cmdutil.Factory, version, buildDate string) *cobra.Command {
 
 	// below here at the commands that require the "intelligent" BaseRepo resolver
 	repoResolvingCmdFactory := *f
-	repoResolvingCmdFactory.BaseRepo = resolvedBaseRepo(f)
+	repoResolvingCmdFactory.BaseRepo = factory.SmartBaseRepoFunc(f)
 
 	cmd.AddCommand(prCmd.NewCmdPR(&repoResolvingCmdFactory))
 	cmd.AddCommand(issueCmd.NewCmdIssue(&repoResolvingCmdFactory))
@@ -126,29 +123,3 @@ func bareHTTPClient(f *cmdutil.Factory, version string) func() (*http.Client, er
 		return factory.NewHTTPClient(f.IOStreams, cfg, version, false), nil
 	}
 }
-
-func resolvedBaseRepo(f *cmdutil.Factory) func() (ghrepo.Interface, error) {
-	return func() (ghrepo.Interface, error) {
-		httpClient, err := f.HttpClient()
-		if err != nil {
-			return nil, err
-		}
-
-		apiClient := api.NewClientFromHTTP(httpClient)
-
-		remotes, err := f.Remotes()
-		if err != nil {
-			return nil, err
-		}
-		repoContext, err := context.ResolveRemotesToRepos(remotes, apiClient, "")
-		if err != nil {
-			return nil, err
-		}
-		baseRepo, err := repoContext.BaseRepo(f.IOStreams)
-		if err != nil {
-			return nil, err
-		}
-
-		return baseRepo, nil
-	}
-}

pkg/cmdutil/repo_override.go

@@ -1,9 +1,24 @@
 package cmdutil
 
 import (
+	"os"
+
+	"github.com/cli/cli/internal/ghrepo"
 	"github.com/spf13/cobra"
 )
 
 func EnableRepoOverride(cmd *cobra.Command, f *Factory) {
 	cmd.PersistentFlags().StringP("repo", "R", "", "Select another repository using the `[HOST/]OWNER/REPO` format")
 }
+
+func OverrideBaseRepoFunc(f *Factory, override string) func() (ghrepo.Interface, error) {
+	if override == "" {
+		override = os.Getenv("GH_REPO")
+	}
+	if override != "" {
+		return func() (ghrepo.Interface, error) {
+			return ghrepo.FromFullName(override)
+		}
+	}
+	return f.BaseRepo
+}

pkg/iostreams/iostreams.go

@@ -140,6 +140,10 @@ func (s *IOStreams) SetPager(cmd string) {
 	s.pagerCommand = cmd
 }
 
+func (s *IOStreams) GetPager() string {
+	return s.pagerCommand
+}
+
 func (s *IOStreams) StartPager() error {
 	if s.pagerCommand == "" || s.pagerCommand == "cat" || !s.IsStdoutTTY() {
 		return nil
@@ -202,6 +206,10 @@ func (s *IOStreams) CanPrompt() bool {
 	return s.IsStdinTTY() && s.IsStdoutTTY()
 }
 
+func (s *IOStreams) GetNeverPrompt() bool {
+	return s.neverPrompt
+}
+
 func (s *IOStreams) SetNeverPrompt(v bool) {
 	s.neverPrompt = v
 }
@@ -281,8 +289,6 @@ func System() *IOStreams {
 	stdoutIsTTY := isTerminal(os.Stdout)
 	stderrIsTTY := isTerminal(os.Stderr)
 
-	pagerCommand := os.Getenv("PAGER")
-
 	io := &IOStreams{
 		In:           os.Stdin,
 		originalOut:  os.Stdout,
@@ -290,7 +296,7 @@ func System() *IOStreams {
 		ErrOut:       colorable.NewColorable(os.Stderr),
 		colorEnabled: EnvColorForced() || (!EnvColorDisabled() && stdoutIsTTY),
 		is256enabled: Is256ColorSupported(),
-		pagerCommand: pagerCommand,
+		pagerCommand: os.Getenv("PAGER"),
 	}
 
 	if stdoutIsTTY && stderrIsTTY {

script/build.bat

@@ -0,0 +1 @@
+go run script\build.go %*

script/build.go

@@ -23,6 +23,7 @@
 package main
 
 import (
+	"errors"
 	"fmt"
 	"io/ioutil"
 	"os"
@@ -136,8 +137,14 @@ func date() string {
 
 func sourceFilesLaterThan(t time.Time) bool {
 	foundLater := false
-	_ = filepath.Walk(".", func(path string, info os.FileInfo, err error) error {
+	err := filepath.Walk(".", func(path string, info os.FileInfo, err error) error {
 		if err != nil {
+			// Ignore errors that occur when the project contains a symlink to a filesystem or volume that
+			// Windows doesn't have access to.
+			if path != "." && isAccessDenied(err) {
+				fmt.Fprintf(os.Stderr, "%s: %v\n", path, err)
+				return nil
+			}
 			return err
 		}
 		if foundLater {
@@ -151,6 +158,9 @@ func sourceFilesLaterThan(t time.Time) bool {
 			}
 		}
 		if info.IsDir() {
+			if name := filepath.Base(path); name == "vendor" || name == "node_modules" {
+				return filepath.SkipDir
+			}
 			return nil
 		}
 		if path == "go.mod" || path == "go.sum" || (strings.HasSuffix(path, ".go") && !strings.HasSuffix(path, "_test.go")) {
@@ -160,9 +170,18 @@ func sourceFilesLaterThan(t time.Time) bool {
 		}
 		return nil
 	})
+	if err != nil {
+		panic(err)
+	}
 	return foundLater
 }
 
+func isAccessDenied(err error) bool {
+	var pe *os.PathError
+	// we would use `syscall.ERROR_ACCESS_DENIED` if this script supported build tags
+	return errors.As(err, &pe) && strings.Contains(pe.Err.Error(), "Access is denied")
+}
+
 func rmrf(targets ...string) error {
 	args := append([]string{"rm", "-rf"}, targets...)
 	announce(args...)