+ try to match the article title with a few variant of the search pattern

src/server/kiwix-serve.cpp

@@ -288,12 +288,42 @@ static int accessHandlerCallback(void *cls,
     /* Try first to load directly the article if exactly matching the pattern */
     std::string patternCorrespondingUrl;
     if (reader != NULL) {
+
       pthread_mutex_lock(&readerLock);
+      bool found = false;
+
+      /* Try to see if there is an article with this title */
       reader->getPageUrlFromTitle(patternString, patternCorrespondingUrl);
+      found = !patternCorrespondingUrl.empty();
+
+      /* Try with first letter uppercase */
+      if (!found) {
+	patternString = kiwix::ucFirst(patternString);
+	reader->getPageUrlFromTitle(patternString, patternCorrespondingUrl);
+	found = !patternCorrespondingUrl.empty();
+      }
+
+      /* Try with first letter lowercase */
+      if (!found) {
+	patternString = kiwix::lcFirst(patternString);
+	reader->getPageUrlFromTitle(patternString, patternCorrespondingUrl);
+	found = !patternCorrespondingUrl.empty();
+      }
+
+      /* Try with title words */
+      if (!found) {
+	patternString = kiwix::toTitle(patternString);
+	reader->getPageUrlFromTitle(patternString, patternCorrespondingUrl);
+	found = !patternCorrespondingUrl.empty();
+      }
+      
       pthread_mutex_unlock(&readerLock);
+
+      /* If article found then redirect directly to it */
       if (!patternCorrespondingUrl.empty()) {
 	httpRedirection="/" + humanReadableBookId + "/" + patternCorrespondingUrl;
       }
+
     }
 
     /* Make the search */