Improved spellcheck after '\' characters

src/source_spellcheck.cc

@@ -415,6 +415,12 @@ bool Source::SpellCheckView::is_code_iter(const Gtk::TextIter &iter) {
 }
 
 bool Source::SpellCheckView::is_word_iter(const Gtk::TextIter& iter) {
+  auto previous_iter=iter;
+  size_t forward_slash_count=0;
+  while(previous_iter.backward_char() && *previous_iter=='\\')
+    ++forward_slash_count;
+  if(forward_slash_count%2==1)
+    return false;
   if(((*iter>='A' && *iter<='Z') || (*iter>='a' && *iter<='z') || *iter>=128))
     return true;
   if(*iter=='\'') {