From 7f6b6c42e7ff4037277055e0ec9668b7728db6c7 Mon Sep 17 00:00:00 2001
From: Otto Liljalaakso <otto.liljalaakso@iki.fi>
Date: Aug 18 2024 11:57:40 +0000
Subject: Fix check-valid-tutorial-pr


The check for added and removed lines was faulty, because its expected
output used space characters instead of tabs like Git actually outputs.
Fix that, and also add `--staged` to `git diff` invocations to make the
script a bit easier to test locally.

---

diff --git a/ci/check-valid-tutorial-pr b/ci/check-valid-tutorial-pr
index c33f17f..e24acfd 100755
--- a/ci/check-valid-tutorial-pr
+++ b/ci/check-valid-tutorial-pr
@@ -1,9 +1,10 @@
 #!/usr/bin/bash
-DIFF=$(git diff --numstat origin/main)
-if [ "$DIFF" != "1       0       share/packagers" ]; then
+DIFF=$(git diff --staged --numstat origin/main)
+EXPECTED="1	0	share/packagers"
+if [ "$DIFF" != "$EXPECTED" ]; then
     echo -e \
         "Not a valid tutorial PR." \
         "Expected single added line in 'share/packagers'." \
-        "Changes in:\n$(git diff --stat origin/main)"
+        "Changes in:\n$(git diff --staged --stat origin/main)"
     exit 1
 fi