GIT: I want to unstage all files matching a certain pattern

If you are using Powershell the following will work.

gci -re -in *foo | %{ git reset $_ }

for i in `git status --porcelain | grep '^D.*\.foo$' | sed 's/^D \+//'`; do
    git reset HEAD "$i"
    git checkout "$i"
done

This should work in cygwin and unix env

git reset $(git diff --name-only --cached | grep *.foo)

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