Re: Setting cdablevars adds 10-15s to run time for non existing command

[Bart Schaefer <schaefer@brasslantern.com>]

Meant to reply to this a while ago but it fell down the stack.

On Thu, Mar 18, 2021 at 4:42 PM Experts Ravioli
<experts.ravioli@gmail.com> wrote:
>
> If I use `setopt cdablevars` in my .zshrc and then I try to run a `insert_random_command_name_here` (which does not exist) the prompt returns after 10-15s.
[...]
> setopt autocd autopushd pushdminus pushdsilent pushdtohome cdablevars
>
> Does anyone have any idea?

It's not (just) cdablevars, it's autocd.  When you have both of those
set, zsh attempts to interpret 'insert_random_command_name_here' as a
possible reference to a directory to which to (auto)cd, which in turn
results in a check for whether it should create parameter table
entries for any location that might be related to that name.  If your
$path and $cdpath contain either a lot of directories or some
potentially-slow remote mount points, that operation could be very
time consuming.  If it succeeded, the result would be cached and be
fast the next time, but failure is always slow.