diff --git a/src/source.cc b/src/source.cc
index 0bc0913..5ff6040 100644
--- a/src/source.cc
+++ b/src/source.cc
@@ -212,15 +212,6 @@ Source::View::View(const boost::filesystem::path &file_path, const Glib::RefPtr<
       //   }
       // }
     }
-
-    if(language_id == "chdr" || language_id == "cpphdr" || language_id == "c" ||
-       language_id == "cpp" || language_id == "objc" || language_id == "java" ||
-       language_id == "js" || language_id == "ts" || language_id == "proto" ||
-       language_id == "c-sharp" || language_id == "html" || language_id == "cuda" ||
-       language_id == "php" || language_id == "rust" || language_id == "swift" ||
-       language_id == "go" || language_id == "scala" || language_id == "opencl" ||
-       language_id == "json" || language_id == "css")
-      is_bracket_language = true;
   }
 
   setup_tooltip_and_dialog_events();
@@ -1250,13 +1241,13 @@ void Source::View::hide_dialogs() {
 Gtk::TextIter Source::View::find_non_whitespace_code_iter_backward(Gtk::TextIter iter) {
   if(iter.starts_line())
     return iter;
-  while(!iter.starts_line() && (is_comment_iter(iter) || *iter == ' ' || *iter == '\t' || iter.ends_line()) && iter.backward_char()) {
+  while(!iter.starts_line() && (!is_code_iter(iter) || *iter == ' ' || *iter == '\t' || iter.ends_line()) && iter.backward_char()) {
   }
   return iter;
 }
 
 Gtk::TextIter Source::View::get_start_of_expression(Gtk::TextIter iter) {
-  while(!iter.starts_line() && (*iter == ' ' || *iter == '\t' || iter.ends_line() || !is_code_iter(iter) || is_comment_iter(iter)) && iter.backward_char()) {
+  while(!iter.starts_line() && (*iter == ' ' || *iter == '\t' || iter.ends_line() || !is_code_iter(iter)) && iter.backward_char()) {
   }
 
   if(iter.starts_line())
@@ -1323,7 +1314,7 @@ Gtk::TextIter Source::View::get_start_of_expression(Gtk::TextIter iter) {
       // Handle ',', ':', or operators that can be used between two lines, on previous line:
       auto previous_iter = iter;
       previous_iter.backward_char();
-      while(!previous_iter.starts_line() && (*previous_iter == ' ' || previous_iter.ends_line() || is_comment_iter(previous_iter)) && previous_iter.backward_char()) {
+      while(!previous_iter.starts_line() && (*previous_iter == ' ' || previous_iter.ends_line() || !is_code_iter(previous_iter)) && previous_iter.backward_char()) {
       }
       if(previous_iter.starts_line())
         return iter;
@@ -1462,9 +1453,6 @@ long Source::View::symbol_count(Gtk::TextIter iter, unsigned int positive_char,
   }
 
   long curly_count = 0;
-  bool check_if_next_iter_is_code_iter = false;
-  if(positive_char == '\'' || negative_char == '\'' || positive_char == '"' || negative_char == '"')
-    check_if_next_iter_is_code_iter = true;
 
   do {
     if(*iter == positive_char && is_code_iter(iter))
@@ -1478,14 +1466,6 @@ long Source::View::symbol_count(Gtk::TextIter iter, unsigned int positive_char,
     }
     else if(*iter == '}' && is_code_iter(iter))
       curly_count--;
-    else if(check_if_next_iter_is_code_iter) {
-      auto next_iter = iter;
-      next_iter.forward_char();
-      if(*iter == positive_char && is_code_iter(next_iter))
-        symbol_count++;
-      else if(*iter == negative_char && is_code_iter(next_iter))
-        symbol_count--;
-    }
   } while(iter.backward_char());
 
   iter = iter_stored;
@@ -1505,14 +1485,6 @@ long Source::View::symbol_count(Gtk::TextIter iter, unsigned int positive_char,
         break;
       curly_count--;
     }
-    else if(check_if_next_iter_is_code_iter) {
-      auto next_iter = iter;
-      next_iter.forward_char();
-      if(*iter == positive_char && is_code_iter(next_iter))
-        symbol_count++;
-      else if(*iter == negative_char && is_code_iter(next_iter))
-        symbol_count--;
-    }
   } while(iter.forward_char());
 
   return symbol_count;
@@ -2536,37 +2508,6 @@ bool Source::View::on_key_press_event_smart_inserts(GdkEventKey *key) {
     return false;
   };
 
-  // Move right when clicking ' before a ' or when clicking " before a "
-  if(((key->keyval == GDK_KEY_apostrophe && *iter == '\'') ||
-      (key->keyval == GDK_KEY_quotedbl && *iter == '\"')) && is_code_iter(next_iter)) {
-    bool perform_move = false;
-    if(*previous_iter != '\\')
-      perform_move = true;
-    else {
-      auto it = previous_iter;
-      long backslash_count = 1;
-      while(it.backward_char() && *it == '\\') {
-        ++backslash_count;
-      }
-      if(backslash_count % 2 == 0)
-        perform_move = true;
-    }
-    if(perform_move) {
-      get_buffer()->place_cursor(next_iter);
-      scroll_to(get_buffer()->get_insert());
-      return true;
-    }
-  }
-  // When to delete '' or ""
-  else if(key->keyval == GDK_KEY_BackSpace) {
-    if(((*previous_iter == '\'' && *iter == '\'') ||
-        (*previous_iter == '"' && *iter == '"')) && is_code_iter(previous_iter)) {
-      get_buffer()->erase(previous_iter, next_iter);
-      scroll_to(get_buffer()->get_insert());
-      return true;
-    }
-  }
-
   if(is_code_iter(iter)) {
     // Insert ()
     if(key->keyval == GDK_KEY_parenleft && allow_insertion(iter)) {
@@ -2590,7 +2531,7 @@ bool Source::View::on_key_press_event_smart_inserts(GdkEventKey *key) {
         return false;
       }
     }
-    // Move left on ] in []
+    // Move right on ] in []
     else if(key->keyval == GDK_KEY_bracketright) {
       if(*iter == ']' && symbol_count(iter, '[', ']') <= 0) {
         iter.forward_char();
@@ -2604,7 +2545,7 @@ bool Source::View::on_key_press_event_smart_inserts(GdkEventKey *key) {
       auto start_iter = get_start_of_expression(iter);
       // Do not add } if { is at end of line and next line has a higher indentation
       auto test_iter = iter;
-      while(!test_iter.ends_line() && (*test_iter == ' ' || *test_iter == '\t' || !is_code_iter(test_iter) || is_comment_iter(test_iter)) && test_iter.forward_char()) {
+      while(!test_iter.ends_line() && (*test_iter == ' ' || *test_iter == '\t' || !is_code_iter(test_iter)) && test_iter.forward_char()) {
       }
       if(test_iter.ends_line()) {
         if(iter.get_line() + 1 < get_buffer()->get_line_count() && *start_iter != '(' && *start_iter != '[' && *start_iter != '{') {
@@ -2648,7 +2589,7 @@ bool Source::View::on_key_press_event_smart_inserts(GdkEventKey *key) {
       }
       return false;
     }
-    // Move left on } in {}
+    // Move right on } in {}
     else if(key->keyval == GDK_KEY_braceright) {
       if(*iter == '}' && symbol_count(iter, '{', '}') <= 0) {
         iter.forward_char();
@@ -2675,6 +2616,12 @@ bool Source::View::on_key_press_event_smart_inserts(GdkEventKey *key) {
       scroll_to(get_buffer()->get_insert());
       return true;
     }
+    // Move right on last ' in '', or last " in ""
+    else if(((key->keyval == GDK_KEY_apostrophe && *iter == '\'') || (key->keyval == GDK_KEY_quotedbl && *iter == '\"')) && is_spellcheck_iter(iter)) {
+      get_buffer()->place_cursor(next_iter);
+      scroll_to(get_buffer()->get_insert());
+      return true;
+    }
     // Insert ; at the end of line, if iter is at the last )
     else if(key->keyval == GDK_KEY_semicolon) {
       if(*iter == ')' && symbol_count(iter, '(', ')') <= 0 && next_iter.ends_line()) {
@@ -2719,6 +2666,14 @@ bool Source::View::on_key_press_event_smart_inserts(GdkEventKey *key) {
         scroll_to(get_buffer()->get_insert());
         return true;
       }
+      // Delete '' or ""
+      else if(key->keyval == GDK_KEY_BackSpace) {
+        if((*previous_iter == '\'' && *iter == '\'') || (*previous_iter == '"' && *iter == '"')) {
+          get_buffer()->erase(previous_iter, next_iter);
+          scroll_to(get_buffer()->get_insert());
+          return true;
+        }
+      }
     }
   }
 
@@ -3214,9 +3169,6 @@ Source::GenericView::GenericView(const boost::filesystem::path &file_path, const
   configure();
   spellcheck_all = true;
 
-  if(language)
-    get_source_buffer()->set_language(language);
-
   auto completion = get_completion();
   completion->property_show_headers() = false;
   completion->property_show_icons() = false;
diff --git a/src/source.h b/src/source.h
index 6935969..ea42d0d 100644
--- a/src/source.h
+++ b/src/source.h
@@ -158,7 +158,6 @@ namespace Source {
 
     sigc::connection renderer_activate_connection;
 
-    bool is_bracket_language = false;
     bool use_fixed_continuation_indenting = true;
     bool is_cpp = false;
     guint previous_non_modifier_keyval = 0;
diff --git a/src/source_base.cc b/src/source_base.cc
index f84c77c..e32fd35 100644
--- a/src/source_base.cc
+++ b/src/source_base.cc
@@ -16,6 +16,19 @@ Source::BaseView::BaseView(const boost::filesystem::path &file_path, const Glib:
   });
 
   monitor_file();
+
+  if(language) {
+    get_source_buffer()->set_language(language);
+    auto language_id = language->get_id();
+    if(language_id == "chdr" || language_id == "cpphdr" || language_id == "c" ||
+       language_id == "cpp" || language_id == "objc" || language_id == "java" ||
+       language_id == "js" || language_id == "ts" || language_id == "proto" ||
+       language_id == "c-sharp" || language_id == "html" || language_id == "cuda" ||
+       language_id == "php" || language_id == "rust" || language_id == "swift" ||
+       language_id == "go" || language_id == "scala" || language_id == "opencl" ||
+       language_id == "json" || language_id == "css")
+      is_bracket_language = true;
+  }
 }
 
 Source::BaseView::~BaseView() {
diff --git a/src/source_base.h b/src/source_base.h
index 1cc4e94..fa09221 100644
--- a/src/source_base.h
+++ b/src/source_base.h
@@ -52,6 +52,8 @@ namespace Source {
     void monitor_file();
     void check_last_write_time(std::time_t last_write_time_ = static_cast<std::time_t>(-1));
 
+    bool is_bracket_language = false;
+
     /// Move iter to line start. Depending on iter position, before or after indentation.
     /// Works with wrapped lines.
     Gtk::TextIter get_smart_home_iter(const Gtk::TextIter &iter);
diff --git a/src/source_spellcheck.cc b/src/source_spellcheck.cc
index 8dbac97..c23b491 100644
--- a/src/source_spellcheck.cc
+++ b/src/source_spellcheck.cc
@@ -46,14 +46,14 @@ Source::SpellCheckView::SpellCheckView(const boost::filesystem::path &file_path,
       return;
     }
 
-    if(!is_code_iter(iter)) {
+    if(is_spellcheck_iter(iter)) {
       if(last_keyval == GDK_KEY_Return || last_keyval == GDK_KEY_KP_Enter) {
         auto previous_line_iter = iter;
         while(previous_line_iter.backward_char() && !previous_line_iter.ends_line()) {
         }
         if(previous_line_iter.backward_char()) {
           get_buffer()->remove_tag(spellcheck_error_tag, previous_line_iter, iter);
-          if(!is_code_iter(previous_line_iter)) {
+          if(is_spellcheck_iter(previous_line_iter)) {
             auto word = get_word(previous_line_iter);
             spellcheck_word(word.first, word.second);
           }
@@ -283,7 +283,7 @@ void Source::SpellCheckView::spellcheck() {
     }
   }
   else {
-    bool spell_check = !is_code_iter(iter);
+    bool spell_check = is_spellcheck_iter(iter);
     if(spell_check)
       begin_spellcheck_iter = iter;
     while(iter != get_buffer()->end()) {
@@ -334,16 +334,16 @@ void Source::SpellCheckView::goto_next_spellcheck_error() {
   Info::get().print("No spelling errors found in current buffer");
 }
 
-bool Source::SpellCheckView::is_code_iter(const Gtk::TextIter &iter) {
+bool Source::SpellCheckView::is_spellcheck_iter(const Gtk::TextIter &iter) {
   if(*iter == '\'') {
     auto previous_iter = iter;
     if(!iter.starts_line() && previous_iter.backward_char() && *previous_iter == '\'')
-      return false;
+      return true;
   }
   if(spellcheck_all) {
     if(no_spell_check_tag) {
       if(iter.has_tag(no_spell_check_tag) || iter.begins_tag(no_spell_check_tag) || iter.ends_tag(no_spell_check_tag))
-        return true;
+        return false;
       // workaround for gtksourceview bug
       if(iter.ends_line()) {
         auto previous_iter = iter;
@@ -352,7 +352,7 @@ bool Source::SpellCheckView::is_code_iter(const Gtk::TextIter &iter) {
             auto next_iter = iter;
             next_iter.forward_char();
             if(next_iter.begins_tag(no_spell_check_tag) || next_iter.is_end())
-              return true;
+              return false;
           }
         }
       }
@@ -360,14 +360,14 @@ bool Source::SpellCheckView::is_code_iter(const Gtk::TextIter &iter) {
       if(*iter == '\'' || *iter == '"') {
         auto previous_iter = iter;
         if(previous_iter.backward_char() && *previous_iter != '\'' && *previous_iter != '\"' && previous_iter.ends_tag(no_spell_check_tag))
-          return true;
+          return false;
       }
     }
-    return false;
+    return true;
   }
   if(comment_tag) {
     if(iter.has_tag(comment_tag) && !iter.begins_tag(comment_tag))
-      return false;
+      return true;
     //Exception at the end of /**/
     else if(iter.ends_tag(comment_tag)) {
       auto previous_iter = iter;
@@ -379,32 +379,15 @@ bool Source::SpellCheckView::is_code_iter(const Gtk::TextIter &iter) {
           }
           auto next_iter = it;
           if(it.begins_tag(comment_tag) && next_iter.forward_char() && *it == '/' && *next_iter == '*' && previous_iter != it)
-            return true;
+            return false;
         }
       }
-      return false;
+      return true;
     }
   }
   if(string_tag) {
-    if(iter.has_tag(string_tag)) {
-      // When ending an open ''-string with ', the last '-iter is not correctly marked as end iter for string_tag
-      // For instance 'test, when inserting ' at end, would lead to spellcheck error of test'
-      if(*iter == '\'') {
-        long backslash_count = 0;
-        auto it = iter;
-        while(it.backward_char() && *it == '\\')
-          ++backslash_count;
-        if(backslash_count % 2 == 0) {
-          auto it = iter;
-          while(!it.begins_tag(string_tag) && it.backward_to_tag_toggle(string_tag)) {
-          }
-          if(it.begins_tag(string_tag) && *it == '\'' && iter != it)
-            return true;
-        }
-      }
-      if(!iter.begins_tag(string_tag))
-        return false;
-    }
+    if(iter.has_tag(string_tag) && !iter.begins_tag(string_tag))
+      return true;
     // If iter is at the end of string_tag, with exception of after " and '
     else if(iter.ends_tag(string_tag)) {
       auto previous_iter = iter;
@@ -419,32 +402,62 @@ bool Source::SpellCheckView::is_code_iter(const Gtk::TextIter &iter) {
             while(!it.begins_tag(string_tag) && it.backward_to_tag_toggle(string_tag)) {
             }
             if(it.begins_tag(string_tag) && *previous_iter == *it && previous_iter != it)
-              return true;
+              return false;
           }
         }
-        return false;
+        return true;
       }
     }
   }
-  return true;
+  return false;
 }
 
-bool Source::SpellCheckView::is_comment_iter(const Gtk::TextIter &iter) {
-  if(!comment_tag)
-    return false;
-  if(iter.has_tag(comment_tag))
-    return true;
+bool Source::SpellCheckView::is_code_iter(const Gtk::TextIter &iter) {
+  // Returns true, for instance for C++, if iter is at either characters of // or /*
+  const auto is_comment_iter = [this](const Gtk::TextIter &iter) {
+    if(!comment_tag)
+      return false;
+    if(iter.has_tag(comment_tag))
+      return true;
 #if GTKMM_MAJOR_VERSION > 3 || (GTKMM_MAJOR_VERSION == 3 && GTKMM_MINOR_VERSION >= 20)
-  if(iter.starts_tag(comment_tag))
-    return true;
+    if(iter.starts_tag(comment_tag))
+      return true;
 #else
-  if(*iter == '/') {
+    if(*iter == '/') {
+      auto next_iter = iter;
+      if(!next_iter.ends_line() && next_iter.forward_char() && next_iter.has_tag(comment_tag))
+        return true;
+    }
+#endif
+    return false;
+  };
+
+  if(is_comment_iter(iter))
+    return false;
+
+  bool is_code_iter = !is_spellcheck_iter(iter);
+
+  // Treat closing " or ' as code iters
+  if(!is_code_iter && (*iter == '\'' || *iter == '"')) {
+    if(comment_tag && iter.ends_tag(comment_tag)) // ' or " at end of comments are not code iters
+      return false;
     auto next_iter = iter;
-    if(!next_iter.ends_line() && next_iter.forward_char() && next_iter.has_tag(comment_tag))
-      return true;
+    next_iter.forward_char();
+    return !is_spellcheck_iter(next_iter);
   }
-#endif
-  return false;
+
+  if(is_bracket_language)
+    return is_code_iter;
+
+  // Non-bracket languages can have code iters inside (), [] and {}, while non-code iters outside of these brackets
+  // Do not threat these closing code brackets as code iters
+  if(is_code_iter && (*iter == ')' || *iter == ']' || *iter == '}')) {
+    auto next_iter = iter;
+    next_iter.forward_char();
+    return !is_spellcheck_iter(next_iter);
+  }
+
+  return is_code_iter;
 }
 
 bool Source::SpellCheckView::is_word_iter(const Gtk::TextIter &iter) {
@@ -456,15 +469,8 @@ bool Source::SpellCheckView::is_word_iter(const Gtk::TextIter &iter) {
     return false;
   if(((*iter >= 'A' && *iter <= 'Z') || (*iter >= 'a' && *iter <= 'z') || *iter >= 128))
     return true;
-  if(*iter == '\'') {
-    if(is_code_iter(iter))
-      return false;
-    auto next_iter = iter;
-    if(next_iter.forward_char() && is_code_iter(next_iter) &&
-       !(comment_tag && iter.ends_tag(comment_tag))) // additional check for end of line comment
-      return false;
-    return true;
-  }
+  if(*iter == '\'')
+    return !is_code_iter(iter);
   return false;
 }
 
diff --git a/src/source_spellcheck.h b/src/source_spellcheck.h
index 11459d6..5d0524f 100644
--- a/src/source_spellcheck.h
+++ b/src/source_spellcheck.h
@@ -16,9 +16,13 @@ namespace Source {
     void goto_next_spellcheck_error();
 
   protected:
+    /// For instance, the iter before a closing " is a spellcheck iter, while an opening " is not a spellcheck iter.
+    /// Otherwise, strings and comments should return true.
+    bool is_spellcheck_iter(const Gtk::TextIter &iter);
+    /// For instance, both opening and closing " are code iters.
+    /// None of the comment characters, for instance //, are code iters.
+    /// Otherwise, strings and comments should return false.
     bool is_code_iter(const Gtk::TextIter &iter);
-    /// Returns true, for instance for C++, if iter is at either characters of // or /*
-    bool is_comment_iter(const Gtk::TextIter &iter);
     bool spellcheck_all = false;
     guint last_keyval = 0;
 
diff --git a/tests/source_key_test.cc b/tests/source_key_test.cc
index 782c176..b79d0db 100644
--- a/tests/source_key_test.cc
+++ b/tests/source_key_test.cc
@@ -22,7 +22,6 @@ int main() {
     auto language = language_manager->get_language("cpp");
     Source::View view(source_file, language);
     view.get_source_buffer()->set_highlight_syntax(true);
-    view.get_source_buffer()->set_language(language);
     view.set_tab_char_and_size(' ', 2);
     auto buffer = view.get_buffer();
     event.keyval = GDK_KEY_Return;
@@ -2004,7 +2003,6 @@ int main() {
     auto language = language_manager->get_language("python");
     Source::View view(source_file, language);
     view.get_source_buffer()->set_highlight_syntax(true);
-    view.get_source_buffer()->set_language(language);
     view.set_tab_char_and_size(' ', 2);
     auto buffer = view.get_buffer();
     event.keyval = GDK_KEY_Return;
@@ -2022,7 +2020,6 @@ int main() {
     auto language = language_manager->get_language("js");
     Source::View view(source_file, language);
     view.get_source_buffer()->set_highlight_syntax(true);
-    view.get_source_buffer()->set_language(language);
     view.set_tab_char_and_size(' ', 2);
     auto buffer = view.get_buffer();
     event.keyval = GDK_KEY_Return;
@@ -2274,4 +2271,41 @@ int main() {
       g_assert(buffer->get_insert()->get_iter() == buffer->end());
     }
   }
+  {
+    auto language = language_manager->get_language("markdown");
+    Source::View view(source_file, language);
+    view.spellcheck_all = true;
+    view.get_source_buffer()->set_highlight_syntax(true);
+    view.set_tab_char_and_size(' ', 2);
+    auto buffer = view.get_buffer();
+    event.keyval = GDK_KEY_Return;
+    {
+      buffer->set_text("\n"
+                       "    * [test](https://test.org)\n");
+      while(Gtk::Main::events_pending())
+        Gtk::Main::iteration(false);
+      auto iter = buffer->get_iter_at_line(1);
+      iter.forward_to_line_end();
+      buffer->place_cursor(iter);
+      view.on_key_press_event(&event);
+      g_assert(buffer->get_text() == "\n"
+                                     "    * [test](https://test.org)\n"
+                                     "    \n");
+      iter = buffer->get_iter_at_line(2);
+      iter.forward_to_line_end();
+      g_assert(buffer->get_insert()->get_iter() == iter);
+    }
+    {
+      buffer->set_text("\n"
+                       "    * [test](https://test.org)");
+      while(Gtk::Main::events_pending())
+        Gtk::Main::iteration(false);
+      view.on_key_press_event(&event);
+      g_assert(buffer->get_text() == "\n"
+                                     "    * [test](https://test.org)\n"
+                                     "    ");
+      auto iter = buffer->end();
+      g_assert(buffer->get_insert()->get_iter() == iter);
+    }
+  }
 }