modify_dot_gitconfig.tmpl

#!/bin/sh

# Create a temporary gitconfig file
tmp_config=$(mktemp)
cat > "$tmp_config"

gitset() {
    git config -f "$tmp_config" "$@"
}

# Set user info
gitset user.name "{{ .chezmoi.config.data.full_name }}"
gitset user.email "{{ .chezmoi.config.data.github_username }}@users.noreply.github.com"

# GitHub credentials
gitset --replace-all credential."https://github.com".helper "!gh auth git-credential"
gitset --replace-all credential."https://gist.github.com".helper "!gh auth git-credential"

# Improved defaults
gitset core.excludesfile "$HOME/.gitignore_global"
gitset init.defaultBranch "main"
gitset push.autoSetupRemote "true"
gitset push.useForceIfIncludes "true"
gitset pull.rebase "true"
gitset rebase.autoStash "true"
gitset diff.algorithm "histogram"
gitset branch.sort "-committerdate"
gitset submodule.recurse "true"
gitset merge.conflictstyle "zdiff3"

# Fancy pager and diffs
gitset core.pager 'sh -c "[ -z \"\$NO_FANCY_SHELL\" ] && delta || [ -z \"\$PAGER\" ] && less -RF --mouse || \$PAGER"'
gitset interactive.diffFilter 'sh -c "[ -z \"\$NO_FANCY_SHELL\" ] && delta --color-only || cat"'
gitset delta.navigate "true"

# Output the modified config and cleanup
cat "$tmp_config"
rm -f "$tmp_config"