Moved git update-requirements to a seperate script.

.gitconfig

@@ -27,7 +27,6 @@
     tag-version = !git tag --annotate --force --message "v$(cat VERSION)" "v$(cat VERSION)"
     tracking = rev-parse --abbrev-ref --symbolic-full-name @{upstream}
     trigger = !git commit --allow-empty --no-edit --amend && git push --force-with-lease
-    update-requirements = !git stash save -a -u -q && ( git ls-files '*requirements*.txt' | xargs -n1 pur -r ) && ( git commit -a -m '- Updated requirements.' || echo 'No requirements updated.' ) && git stash pop
 [color]
     grep = true
 [diff]

Documents/bin/git-update-requirements

+#!/bin/sh
+set -eu
+which pur > /dev/null || { echo "Can't find pur."; exit 1; }
+
+git stash save --all --include-untracked --quiet
+git ls-files '*requirements*.txt' | xargs -n1 pur -r
+git commit -a -m '- Updated requirements.' || echo 'No requirements updated.'
+git stash pop