This is enabled if isearch-buffers-multi is non-nil.
+*** The part of an isearch that failed to match is highlighted in `isearch-fail'
+face.
+
** smerge-refine highlights word-level details of changes in conflict.
It's used automatically as you move through conflicts, see smerge-auto-refine.
*** The file etc/emacs.py now supports both Python 2 and 3, meaning
that either version can be used as inferior Python by python.el.
+*** Python mode now has `pdbtrack' functionality. When using pdb to
+debug a Python program, pdbtrack notices the pdb prompt and displays
+the source file and line that the program is stopped at, much the same
+way as gud-mode does for debugging C programs with gdb.
+
*** The variable `fortran-line-length' can change the fixed-form line-length.
*** In Fortran mode, M-; is now bound to the standard comment-dwim,