File name not visible anywhere

[murtraja]

Hello,

Whenever a file is executed, the program asks us to save the file first. After that, how do you ascertain which file you're working on as I couldn't find any provision to see the filename. Even if we are able to see the file name in the title bar, that would be awesome as well.

I would be more than happy to submit a PR after receiving your guidance in how can one achieve this. (I see that gtk_window_set_title can be used and file name can be retrieved from static GString *file_name = NULL;