fix: a regex bug with escaping inside of character classes (#4575)

Also delete the broken docker weekly flow.

Signed-off-by: Roman Gershman <roman@dragonflydb.io>

.github/workflows/docker-weekly.yml

@@ -1,25 +0,0 @@
-name: weekly docker build
-
-on:
-  schedule:
-    # Monday midnight
-    - cron: '0 0 * * 1'
-  workflow_dispatch:
-
-permissions:
-  packages: write
-  contents: write
-  id-token: write
-
-jobs:
-  weekly-container-build:
-    uses: ./.github/workflows/reusable-container-workflow.yaml
-    with:
-      build_type: dev
-      tag: ${{ github.sha}}
-      tag_latest: true
-      image: ghcr.io/dragonflydb/dragonfly-weekly
-      registry: ghcr.io
-      registry_username: ${{ github.repository_owner }}
-    secrets:
-      registry_password: ${{ secrets.GITHUB_TOKEN }}

src/core/dfly_core_test.cc

@@ -230,7 +230,7 @@ TEST_F(IntentLockTest, Basic) {
 class StringMatchTest : public ::testing::Test {
  protected:
   // wrapper around stringmatchlen with stringview arguments
-  int MatchLen(string_view pattern, string_view str, bool nocase) {
+  bool MatchLen(string_view pattern, string_view str, bool nocase) {
     GlobMatcher matcher(pattern, !nocase);
     return matcher.Matches(str);
   }
@@ -247,6 +247,11 @@ TEST_F(StringMatchTest, Glob2Regex) {
   EXPECT_EQ(GlobMatcher::Glob2Regex("[^]a"), ".a");
   EXPECT_EQ(GlobMatcher::Glob2Regex("[]a"), "[]a");
   EXPECT_EQ(GlobMatcher::Glob2Regex("\\d"), "d");
+  EXPECT_EQ(GlobMatcher::Glob2Regex("[\\d]"), "[\\\\d]");
+
+  reflex::Matcher matcher("abc[\\\\d]e");
+  matcher.input("abcde");
+  ASSERT_TRUE(matcher.find());
 }
 
 TEST_F(StringMatchTest, Basic) {
@@ -289,9 +294,10 @@ TEST_F(StringMatchTest, Basic) {
 }
 
 TEST_F(StringMatchTest, Special) {
-  EXPECT_EQ(MatchLen("h\\[^|", "h[^|", 0), 1);
-  EXPECT_EQ(MatchLen("[^", "[^", 0), 0);
-  EXPECT_EQ(MatchLen("[$?^]a", "?a", 0), 1);
+  EXPECT_TRUE(MatchLen("h\\[^|", "h[^|", 0));
+  EXPECT_FALSE(MatchLen("[^", "[^", 0));
+  EXPECT_TRUE(MatchLen("[$?^]a", "?a", 0));
+  EXPECT_TRUE(MatchLen("abc[\\d]e", "abcde", 0));
 }
 
 using benchmark::DoNotOptimize;

src/core/glob_matcher.cc

@@ -31,6 +31,9 @@ string GlobMatcher::Glob2Regex(string_view glob) {
         in_group = 0;
       }
       regex.push_back(c);
+      if (c == '\\') {
+        regex.push_back(c);  // escape it.
+      }
       continue;
     }