Use case-insensitive key comparsion for cache keys

Author: BytewaveMLP

bundler.js

@@ -206,7 +206,7 @@ export async function bundleInstall(gemfile, lockFile, platform, engine, rubyVer
  await exec.exec('bundle', ['install', '--jobs', '4'])
 
  // @actions/cache only allows to save for non-existing keys
- if (cachedKey !== key) {
+ if (!common.isExactKeyMatch(key, cachedKey)) {
  if (cachedKey) { // existing cache but Gemfile.lock differs, clean old gems
  await exec.exec('bundle', ['clean'])
  }

common.js

@@ -412,3 +412,15 @@ export async function setupJavaHome(rubyPrefix) {
  }
  })
 }
+
+// Determines if two keys are an exact match for the purposes of cache matching
+// Specifically, this is a case-insensitive match that ignores accents
+// From actions/cache@v3 src/utils/actionUtils.ts (MIT)
+export function isExactKeyMatch(key, cacheKey) {
+ return !!(
+ cacheKey &&
+ cacheKey.localeCompare(key, undefined, {
+ sensitivity: 'accent'
+ }) === 0
+ );
+}