Fix GH_REPO override

command/root.go

@@ -49,11 +49,7 @@ func init() {
 
 // overridden in tests
 var initContext = func() context.Context {
-	ctx := context.New()
-	if repo := os.Getenv("GH_REPO"); repo != "" {
-		ctx.SetBaseRepo(repo)
-	}
-	return ctx
+	return context.New()
 }
 
 // BasicClient returns an API client for github.com only that borrows from but
@@ -78,11 +74,7 @@ func BasicClient() (*api.Client, error) {
 }
 
 func contextForCommand(cmd *cobra.Command) context.Context {
-	ctx := initContext()
-	if repo, err := cmd.Flags().GetString("repo"); err == nil && repo != "" {
-		ctx.SetBaseRepo(repo)
-	}
-	return ctx
+	return initContext()
 }
 
 func apiVerboseLog() api.ClientOption {

context/context.go

@@ -15,9 +15,6 @@ import (
 
 // Context represents the interface for querying information about the current environment
 type Context interface {
-	Branch() (string, error)
-	SetBranch(string)
-	SetBaseRepo(string)
 	Config() (config.Config, error)
 }
 

pkg/cmd/issue/issue.go

@@ -2,7 +2,6 @@ package issue
 
 import (
 	"github.com/MakeNowJust/heredoc"
-	"github.com/cli/cli/internal/ghrepo"
 	cmdClose "github.com/cli/cli/pkg/cmd/issue/close"
 	cmdCreate "github.com/cli/cli/pkg/cmd/issue/create"
 	cmdList "github.com/cli/cli/pkg/cmd/issue/list"
@@ -31,17 +30,9 @@ func NewCmdIssue(f *cmdutil.Factory) *cobra.Command {
 				- by URL, e.g. "https://github.com/OWNER/REPO/issues/123".
 			`),
 		},
-		PersistentPreRun: func(cmd *cobra.Command, args []string) {
-			if repo, _ := cmd.Flags().GetString("repo"); repo != "" {
-				// NOTE: this mutates the factory
-				f.BaseRepo = func() (ghrepo.Interface, error) {
-					return ghrepo.FromFullName(repo)
-				}
-			}
-		},
 	}
 
-	cmd.PersistentFlags().StringP("repo", "R", "", "Select another repository using the `OWNER/REPO` format")
+	cmdutil.EnableRepoOverride(cmd, f)
 
 	cmd.AddCommand(cmdClose.NewCmdClose(f, nil))
 	cmd.AddCommand(cmdCreate.NewCmdCreate(f, nil))

pkg/cmd/pr/pr.go

@@ -2,7 +2,6 @@ package pr
 
 import (
 	"github.com/MakeNowJust/heredoc"
-	"github.com/cli/cli/internal/ghrepo"
 	cmdCheckout "github.com/cli/cli/pkg/cmd/pr/checkout"
 	cmdClose "github.com/cli/cli/pkg/cmd/pr/close"
 	cmdCreate "github.com/cli/cli/pkg/cmd/pr/create"
@@ -37,17 +36,9 @@ func NewCmdPR(f *cmdutil.Factory) *cobra.Command {
 				- by the name of its head branch, e.g. "patch-1" or "OWNER:patch-1".
 			`),
 		},
-		PersistentPreRun: func(cmd *cobra.Command, args []string) {
-			if repo, _ := cmd.Flags().GetString("repo"); repo != "" {
-				// NOTE: this mutates the factory
-				f.BaseRepo = func() (ghrepo.Interface, error) {
-					return ghrepo.FromFullName(repo)
-				}
-			}
-		},
 	}
 
-	cmd.PersistentFlags().StringP("repo", "R", "", "Select another repository using the `OWNER/REPO` format")
+	cmdutil.EnableRepoOverride(cmd, f)
 
 	cmd.AddCommand(cmdCheckout.NewCmdCheckout(f, nil))
 	cmd.AddCommand(cmdClose.NewCmdClose(f, nil))

pkg/cmdutil/repo_override.go

@@ -0,0 +1,25 @@
+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 `OWNER/REPO` format")
+
+	cmd.PersistentPreRun = func(cmd *cobra.Command, args []string) {
+		repoOverride, _ := cmd.Flags().GetString("repo")
+		if repoFromEnv := os.Getenv("GH_REPO"); repoOverride == "" && repoFromEnv != "" {
+			repoOverride = repoFromEnv
+		}
+		if repoOverride != "" {
+			// NOTE: this mutates the factory
+			f.BaseRepo = func() (ghrepo.Interface, error) {
+				return ghrepo.FromFullName(repoOverride)
+			}
+		}
+	}
+}