completion configuration

[Pier Paolo Grassi <pierpaolog@gmail.com>]

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Hello everybody, I must confess I don't have a clue when it comes to
configure completion styles. I made various attempts but for now, I don't
seem to grasp the syntax of ztyle.
I have in my .zshrc (blindly copied years ago from who knows where):

zstyle -e ':completion:*:approximate:*' max-errors \
'reply=( $(( ($#PREFIX+$#SUFFIX)/3 )) numeric )'

that, as I understand, enables approximate match for all the commands when
trying completion for a number of errors proportional to the number of
characters of the word to be completed etc.

I would like to disable this completion for a command that has a completer
function I wrote that pass to compadd various values, since these are so
many that the completion is very slow to show matches. So I thought that
maybe disabling the approximate match for this command would speed things
up.

My best bet doing this was:
zstyle -e ':completion:*:approximate:my_command' max-errors 0

but this does not work. I tried also various variants to no success.
Can someone shed some light on this please?

-- 
Pier Paolo Grassi
email: pierpaolog@gmail.com
linkedin: https://www.linkedin.com/in/pier-paolo-grassi-19300217
founder: https://www.meetup.com/it-IT/Machine-Learning-TO