Fixed: Untracked files with spaces in the path do not show a preview with ga

[sandr01d]

Check list

• [X] I have performed a self-review of my code
• [X] I have commented my code in hard-to-understand areas
• [X] I have made corresponding changes to the documentation

Description

Added escaped quotes around the file variable inside the preview string in _forgit_add() to prevent word splitting on files that have spaces in their file path. As a result such files do now generate a preview as expected.

Closes #263

Type of change

• [X] Bug fix
• [ ] New feature
• [ ] Refactor
• [ ] Breaking change
• [ ] Documentation change

Test environment

• Shell
  • [X] bash
  • [X] zsh
  • [X] fish
• OS
  • [X] Linux
  • [ ] Mac OS X
  • [ ] Windows
  • [ ] Others:

[cjappl]

Hoo boy! Ugly but effective. Thumbs up from me. Will wait to see if @carlfriedrich has any thing, otherwise I'll merge it soon.