A test...

weirdness.sh

#!/usr/bin/env bash

mkdir weirdness
cd weirdness
git init
echo "hello" > file
git add file
git commit -m "add file"

echo ''
echo 'After adding the file:'
ls # should return "file"
echo ''

echo "file" > .gitignore
git add .gitignore
git commit -m "add gitignore"

echo ''
echo 'After adding .gitignore:'
ls # should return "file"
echo ''