Support absolute paths when detecting edit preset from EDITOR env var

pkg/commands/git_commands/file.go

@@ -2,6 +2,7 @@ package git_commands
 
 import (
 	"os"
+	"path/filepath"
 	"strconv"
 	"strings"
 
@@ -93,7 +94,7 @@ func (self *FileCommands) guessDefaultEditor() string {
 		// At this point, it might be more than just the name of the editor;
 		// e.g. it might be "code -w" or "vim -u myvim.rc". So assume that
 		// everything up to the first space is the editor name.
-		editor = strings.Split(editor, " ")[0]
+		editor = filepath.Base(strings.Split(editor, " ")[0])
 	}
 
 	return editor

pkg/commands/git_commands/file_test.go

@@ -203,6 +203,17 @@ func TestGuessDefaultEditor(t *testing.T) {
 			},
 			expectedResult: "bbedit",
 		},
+		{
+			gitConfigMockResponses: nil,
+			getenv: func(env string) string {
+				if env == "EDITOR" {
+					return "/usr/bin/nvim"
+				}
+
+				return ""
+			},
+			expectedResult: "nvim",
+		},
 	}
 
 	for _, s := range scenarios {