Cleanup: move UpdateWindowTitle to platform-specific source files

No need to do a runtime check if we already have the platform-specific files.

pkg/commands/oscommands/os_windows.go

@@ -1,5 +1,11 @@
 package oscommands
 
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
 func GetPlatform() *Platform {
 	return &Platform{
 		OS:       "windows",
@@ -7,3 +13,12 @@ func GetPlatform() *Platform {
 		ShellArg: "/c",
 	}
 }
+
+func (c *OSCommand) UpdateWindowTitle() error {
+	path, getWdErr := os.Getwd()
+	if getWdErr != nil {
+		return getWdErr
+	}
+	argString := fmt.Sprint("title ", filepath.Base(path), " - Lazygit")
+	return c.Cmd.NewShell(argString, c.UserConfig().OS.ShellFunctionsFile).Run()
+}