<.gitignore>
[a-c]uild/*
</.gitignore>
F: 'build'
T: 'build/'
T: 'build/inside'
T: 'build/inside/'
T: 'build/inside/a'
T: 'build/inside/a/'

<.gitignore>
[!a]uild/*
</.gitignore>
F: 'other/build'
F: 'other/build/'
F: 'other/build/inside'
F: 'other/build/inside/'
F: 'other/build/inside/a'
F: 'other/build/inside/a/'
