Refactor: Replace _forgit_emojify deffered code variable with a function

[sandr01d]

Check list

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

Description

We used to have a variable that was either undefined or contained a piece of deferred code that piped input through emojify when present on the system. To remove the deferred code here, this commit replaces the _forgit_emojify variable with a function that either pipes the input through emojify or through cat, depending on whether emojify is present.

Note

This PR belongs to #326 and resulted from discussions in #324. In comparison to #326 I've removed passing the function arguments to _forgit_emojify using "$@" because that was unnecessary. Both emojify and cat read input from stdin and the _forgit_emojify function does not take any arguments.

Type of change

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

Test environment

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

[sandr01d]

We're making good progress here. Rebasing now actually removes commits, meaning that some functions do not have any deferred code left :slightly_smiling_face: I expect the following PRs to be smaller than the previous ones. This one should be fairly easy. Looking forward to your reviews @cjappl @carlfriedrich @wfxr

[carlfriedrich]

Oh, I just noticed a typo in the commit msg: should be "deferred" instead of "deffered".

[sandr01d]

Changes have been merged with #326