How does auto completion work?

[nemonein]

Hello.
I'm on Archlinux, glow is 2.0.0, and the shell is zsh(5.9) with oh-my-zsh.
Here's my fpath.

> echo $fpath
/home/nemonein/.oh-my-zsh/plugins/git /home/nemonein/.oh-my-zsh/functions /home/nemonein/.oh-my-zsh/completions /home/nemonein/.oh-my-zsh/custom/functions /home/nemonein/.oh-my-zsh/custom/completions /home/nemonein/.oh-my-zsh/cache/completions /usr/local/share/zsh/site-functions /usr/share/zsh/site-functions /usr/share/zsh/functions/Calendar /usr/share/zsh/functions/Chpwd /usr/share/zsh/functions/Completion /usr/share/zsh/functions/Completion/Base /usr/share/zsh/functions/Completion/Linux /usr/share/zsh/functions/Completion/Unix /usr/share/zsh/functions/Completion/X /usr/share/zsh/functions/Completion/Zsh /usr/share/zsh/functions/Exceptions /usr/share/zsh/functions/MIME /usr/share/zsh/functions/Math /usr/share/zsh/functions/Misc /usr/share/zsh/functions/Newuser /usr/share/zsh/functions/Prompts /usr/share/zsh/functions/TCP /usr/share/zsh/functions/VCS_Info /usr/share/zsh/functions/VCS_Info/Backends /usr/share/zsh/functions/Zftp /usr/share/zsh/functions/Zle

_glow is installed on /usr/share/zsh/site-functions/_glow by the pacman.

---

I'm asking that.. this is as intended.

> glow <tab>
completion  -- Generate the autocompletion script for the specified shell
config      -- Edit the glow config file
help        -- Help about any command
----
> glow ./<tab>
files in this directory...

I think Auto completion works, but I have to prepend ./ first.
Is is normal???

[caarlos0]

hey!

yes, if you don't start with a file path (./ or ../ or /), it'll try to complete subcommands names instead.

[nemonein]

Thank you for the answer.
I think it would be good if it's documented somewhere. (If it's done already, sorry!)
I've never seen a completion works like this before.