Fish completion doesn't silence warnings

[niklasmohrin]

In fish, when typing tldr t<Tab>, I get additional output printed to stderr:

tldr tThe cache hasn't been updated for 34 days.
You should probably run `tldr --update` soon.

tabula          textql            tlmgr-update         trap
tac             theharvester      tlp                  trash
tail            thunar            tlp-stat             trash-cli
tailscale       thunderbird       tmpmail              travis

This is because we use a plain tldr --list for the completion. The zsh script avoids this by redirecting 2>/dev/null, the bash one either has the same problem or bash completions automatically silence this, I haven't checked. I suppose 2>/dev/null is okay, but I would expect --quiet to suffice for this and prefer using that instead.

[newsch]

I can confirm this is a problem with the bash completion as well:

$ source completion/bash_tealdeer
$ touch -d '31 days ago' ~/.cache/tealdeer/tldr-pages
$ tldr tThe cache hasn't been updated for 31 days.
You should probably run `tldr --update` soon.

FWIW, -q doesn't suppress the "Cache not found. Please run tldr --update." message.