macOS 11: slow command autocompletion

[golimpio]

After updating to Big Sur, I'm experiencing a few seconds delay every time I press tab for auto completing a command.

For example, if I type ls and then press [tab], fish will take a few seconds before displaying the list of commands starting with "ls".

This issue seems to be similar to #6270

Tried fish without third-party customizations?

• Yes, same issue.

My environment:

>  fish --version
fish, version 3.1.2

>  uname -a
Darwin dellicia.local 20.2.0 Darwin Kernel Version 20.2.0: Tue Nov 10 21:14:14 PST 2020; root:xnu-7195.60.70.111.1~1/RELEASE_X86_64 x86_64

> echo $TERM
xterm-256color

Running fish with --profile, the only odd thing I've identified was:

1757591	1757591	-> apropos $argv 2>/dev/null | awk -v FS=" +- +" '{
		split($1, names, ", ");
		for (name in names)
			if (names[name] ~ /^'"$argv"'.* *\([18]\)/ ) {
				sub( "( |\t)*\\\([18]\\\)", "", names[name] );
				sub( " \\\[.*\\\]", "", names[name] );
				print names[name] "\t" $2;
			}
	}'

Similar to the other issue linked here.

[piechologist]

I had the same issue. Thank you @golimpio for mentioning #6270. I replaced my __fish_describe_command (see this comment in #6270) and auto completing is snappy again.

Seems like Apple had silently fixed the underlying bug in macOS 10.15.4 and has silently reintroduced it in macOS 11.0.1?

[golimpio]

Sorry, I forgot to mention that I’m running 11.1 beta, thanks for confirming that 11.0.1 has the same issue.

…

On 28 Nov 2020, 8:15 AM +1100, piechologist ***@***.***>, wrote: I had the same issue. Thank you @golimpio for mentioning #6270. I replaced my __fish_describe_command (see this comment in #6270 and auto completing is snappy again. Seems like Apple had silently fixed the underlying bug in macOS 10.15.4 and has silently reintroduced it in macOS 11.0.1? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or unsubscribe.

[faho]

Wonderful.

#7365 is the best we can do here - in the next release, we will cache the apropos output on macOS and invoke makewhatis in the background. This is not gated on version.