Add a way to review room highlights - Fixes #1673

This new features is available with M-p and M-n (previous/next).
It saves the last highlight viewed, meaning that if you scroll in the
buffer, M-n or M-p will take you to the next or previous hl compared to
the one before you started scrolling.

For convenience, going to the previous highlight of the first highlight
will take you to the bottom of the buffer, and going to the next
highlight of the last highlight will do *the same*.

If there are several highlights in one message, only the first line will
be considered a highlight.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/text_buffer.py b/src/text_buffer.py
index 9b717882..2d83ab7e 100644
--- a/src/text_buffer.py
+++ b/src/text_buffer.py
@@ -35,7 +35,7 @@ class TextBuffer(object):
     def add_window(self, win):
         self.windows.append(win)
 
-    def add_message(self, txt, time=None, nickname=None, nick_color=None, history=None, user=None):
+    def add_message(self, txt, time=None, nickname=None, nick_color=None, history=None, user=None, highlight=False):
         time = time or datetime.now()
         if txt.startswith('/me '):
             if nick_color:
@@ -57,7 +57,7 @@ class TextBuffer(object):
         ret_val = None
         for window in self.windows: # make the associated windows
             # build the lines from the new message
-            nb = window.build_new_message(msg, history=history)
+            nb = window.build_new_message(msg, history=history, highlight=highlight)
             if ret_val is None:
                 ret_val = nb
             if window.pos != 0: