Sh,Zsh: handle options for alias and function built-in commands

[codecov[bot]]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (54b22a4) 85.33% compared to head (397f760) 85.33%. Report is 1 commits behind head on master.

Files	Patch %	Lines
parsers/sh.c	94.73%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #3909 +/- ## ======================================= Coverage 85.33% 85.33% ======================================= Files 234 234 Lines 55960 55992 +32 ======================================= + Hits 47751 47782 +31 - Misses 8209 8210 +1 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.