Benchmarking modifications to prompt pure

pure_benchmark.zsh

#!/usr/bin/env zsh

BRANCH=$1
BRANCHES=(master pure-nitro pure-nitro2)
BENCHDIR=benchmark
ROUNDS=100

if [[ ! -n $BRANCH ]]; then
	[[ ! -d $BENCHDIR ]] && mkdir $BENCHDIR
	for i in $BRANCHES; do
		./pure_benchmark.zsh $i
	done

	local header="--header-out"
	for i in $BENCHDIR/*.log; do
		sort $i | datamash $header sum 1 max 1 min 1 mean 1 median 1
		unset header
	done

	exit 0
fi

print "Testing: $BRANCH"
git checkout $BRANCH &>/dev/null
LOG="$BENCHDIR/${BRANCH}.log"

. ./async.zsh
async
. ./pure.zsh
prompt_pure_setup

# disable async job, not relevant for the purpose of this test
unset async_job
async_job() { }

float -F time

print -n |> $LOG
for i in {1..$ROUNDS}; do
	time=$EPOCHREALTIME
	prompt_pure_precmd &>/dev/null
	(( time = EPOCHREALTIME - time ))
	print $time >> $LOG
done