Uses Mercurial instead of Git in a gem generated by "bundle gem" but removes the spec, test and features files from the *.gemspec

new_hg_gem.sh

#! /bin/sh

set -e

bundle gem $1
cd $1

rm -rf .git
mv .gitignore .hgignore

sed -i -e "1s/^/syntax: glob\n/" .hgignore

sed -i 's|git ls-files -z.*|hg manifest -q\`.split("\\n")\.reject\{ \|x\| x =~ /^(test\|spec\|features)\/ }|' $1.gemspec
sed -i '/spec.test_files/d' $1.gemspec

hg init
hg addremove