a less messy sbt new

sbt-new

#!/usr/bin/env bash
#
# Intercepting the output of 'sbt new' directly fails
# because it asks interactive questions so we can't process
# line by line. An apparent OSX-specific bug in egrep
# fails on lookbehind clauses so we use ag. Capturing
# the interactive output with script succeeds, but script
# uses \r\n to terminate lines so we can't match the
# filename with '.*' or we get
#
#   mv: rename ./proj\r to /tmp/proj\r: No such file or directory
#
# Remember this entire wrapper only exists because 'sbt new'
# insensibly wants to spew build files into your current directory.

set -euo pipefail

initial="$(pwd)"
scratch="$(mktemp -dt sbt-new)"

cd $scratch
script -q out.txt sbt -Dsbt.log.noformat=true new "$@"
proj="$( rg -o '(?:Template applied in )([^\r\n]*)' -r '$1' out.txt )"
mv -i "$proj" "$initial"