Ely Office: six offline-first desktop apps in Rust and GPUI

ElyDoc, ElyTable, ElyShow (LibreOfficeKit), ElyPDF (MuPDF), ElyTree (Git),
ElyMark (Milkdown and CodeMirror in CEF). ElyMail and ElyAgent follow.

tests/scripts/lo-patches.sh

@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+# The series applies from a prefix, then as a no-op.
+set -euo pipefail
+
+root=$(cd "$(dirname "$0")/../.." && pwd)
+src=$root/engines/lo-src
+[ -d "$src/.git" ] || { echo "SKIP: no engines/lo-src"; exit 0; }
+patches=("$root"/patches/libreoffice/*.patch)
+files=$(sed -n 's|^+++ b/||p' "${patches[@]}" | sort -u)
+work=$(mktemp -d)
+trap 'rm -rf "$work"' EXIT
+
+# Just the touched files at the pinned commit.
+tree=$work/tree
+mkdir -p "$tree"
+git -C "$tree" init -q
+for f in $files; do
+  if git -C "$src" cat-file -e "HEAD:$f" 2>/dev/null; then
+    mkdir -p "$tree/$(dirname "$f")"
+    git -C "$src" show "HEAD:$f" >"$tree/$f"
+  fi
+done
+git -C "$tree" add -A
+git -C "$tree" -c user.name=t -c user.email=t@t commit -qm pin
+
+half=$((${#patches[@]} / 2))
+for ((i = 0; i < half; i++)); do
+  git -C "$tree" apply "${patches[$i]}"
+done
+out=$("$root/scripts/apply-lo-patches.sh" "$tree")
+grep -q "^apply-lo-patches.sh: $half of ${#patches[@]} patches already" <<<"$out" || {
+  echo "FAIL: the prefix was not found: $out"
+  exit 1
+}
+out=$("$root/scripts/apply-lo-patches.sh" "$tree")
+grep -q "${#patches[@]} of ${#patches[@]} patches already" <<<"$out" || {
+  echo "FAIL: a second run was not a no-op: $out"
+  exit 1
+}
+for f in $files; do
+  [ ! -e "$tree/$f" ] || cmp -s "$tree/$f" "$src/$f" || {
+    echo "FAIL: $f differs from engines/lo-src"
+    exit 1
+  }
+done
+echo "lo-patches: the series applies from patch $half and again as a no-op"