I use the default settings with a fresh plugin installed and got the following error:
Traceback (most recent call last):
File "/opt/sublime_text/sublime_plugin.py", line 1088, in run_
return self.run(edit)
File "/home/georf/.config/sublime-text-3/Installed Packages/Pretty Shell.sublime-package/PrettyShell.py", line 190, in run
File "/home/georf/.config/sublime-text-3/Installed Packages/Pretty Shell.sublime-package/PrettyShell.py", line 185, in shfmt
File "/home/georf/.config/sublime-text-3/Installed Packages/Pretty Shell.sublime-package/PrettyShell.py", line 162, in format_text
File "/home/georf/.config/sublime-text-3/Installed Packages/Pretty Shell.sublime-package/PrettyShell.py", line 70, in update_phantoms
ValueError: invalid literal for int() with base 10: ''