Improved Source::View::find_start_of_sentence when source contains multiline use of stream operators

src/source.cc

@@ -1109,6 +1109,7 @@ bool Source::View::find_open_non_curly_bracket_backward(Gtk::TextIter iter, Gtk:
 }
 
 Gtk::TextIter Source::View::find_start_of_sentence(Gtk::TextIter iter) {
+  bool stream_operator_test=*iter==';'?true:false;
   int para_count=0;
   int square_count=0;
   long curly_count=0;
@@ -1131,7 +1132,17 @@ Gtk::TextIter Source::View::find_start_of_sentence(Gtk::TextIter iter) {
       break;
     
     if(iter.starts_line() && para_count==0 && square_count==0) {
+      bool stream_operator_found=false;
+      // Handle << at the beginning of the sentence if iter initially started with ;
+      if(stream_operator_test) {
+        auto tabs_end_iter=get_tabs_end_iter(iter);
+        if(!tabs_end_iter.starts_line() && *tabs_end_iter=='<' &&
+           tabs_end_iter.forward_char() && *tabs_end_iter=='<' &&
+           tabs_end_iter.forward_char() && *tabs_end_iter==' ')
+          stream_operator_found=true;
+      }
       // Handle : and , on previous line
+      if(!stream_operator_found) {
         auto previous_iter=iter;
         previous_iter.backward_char();
         while(!previous_iter.starts_line() && (*previous_iter==' ' || previous_iter.ends_line()) && previous_iter.backward_char()) {}
@@ -1149,6 +1160,7 @@ Gtk::TextIter Source::View::find_start_of_sentence(Gtk::TextIter iter) {
             return iter;
         }
       }
+    }
   } while(iter.backward_char());
   
   return iter;