Configure Git line normalization the right way (using PowerShell)

eolconfig.ps1

# first install Git 2.16+
# https://git-scm.com/download/win
git --version

# (optional) reset machine settings because per-machine config makes no sense in team projects
# the default (when not set) for core.autocrlf is false (no eol conversions)
git config --unset core.autocrlf
git config --unset core.safecrlf
git config --unset core.eol

$root = $(git rev-parse --show-toplevel)

Push-Location $root

# now create (or replace) a top-level gitattributes file with this magic string
Set-Content .gitattributes "* text=auto"

# at this point Git is configured to convert all line endings to LF in files that Git thinks¹ contain text
# ¹determined using stupid algorithms

# if you have a file type that must use Windows line endings then you can add an exception
Add-Content .gitattributes  ".sln text eol=crlf" -WhatIf

# if you need to exclude TEXT files from normalization then unset the `text` attribute
Add-Content .gitattributes  "donttouchmegit.txt -text" -WhatIf

# if you need to exclude non-text files from normalization then unset the `text` AND the `diff` attribute
Add-Content .gitattributes  "*.bin -text -diff" -WhatIf

# or you can use the `binary` attribute which does the same thing
Add-Content .gitattributes  "*.bin binary" -WhatIf

# you can also exclude entire folders from normalization
# this is especially useful for css/js libraries that don't have normalized line endings (because you shouldn't care)
# create a .gitattributes file in the folder to exclude
# configure Git to treat all files in this directory as not-text
Set-Content vendor/.gitattributes "* -text" -WhatIf

# finally let Git normalize all tracked files
git add --renormalize $root
git commit -m "Enable EOL normalization"

# note: original files in your working dir are not normalized
# to normalize your working copy, delete all files and folders (except .git\) and restore them from the repository
git rm -rf **
git clean -xdf
git checkout -f

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