fix handling of protected programs

Author: ckrause

CHANGELOG.md

@@ -2,6 +2,10 @@ To install or update LODA, please follow the [installation instructions](https:/
 
 ## [Unreleased]
 
+### Bugfixes
+
+* Fix handling of protected programs
+
 # v22.6.27
 
 ### Bugfixes

src/oeis_manager.cpp

@@ -250,13 +250,10 @@ bool OeisManager::shouldMatch(const OeisSequence &seq) const {
     return false;
   }
 
-  // sequence on the deny or protect list?
+  // sequence on the deny list?
   if (deny_list.find(seq.id) != deny_list.end()) {
     return false;
   }
-  if (protect_list.find(seq.id) != protect_list.end()) {
-    return false;
-  }
 
   // too many invalid matches already?
   bool too_many_matches = false;
@@ -272,6 +269,11 @@ bool OeisManager::shouldMatch(const OeisSequence &seq) const {
                            (seq.id < stats->all_program_ids.size()) &&
                            stats->all_program_ids[seq.id];
 
+  // program exists and protected?
+  if (prog_exists && protect_list.find(seq.id) != protect_list.end()) {
+    return false;
+  }
+
   // decide based on overwrite mode
   switch (overwrite_mode) {
     case OverwriteMode::NONE: