Merge from origin/emacs-25

[gnu-emacs] / src / indent.c

diff --git a/src/indent.c b/src/indent.c
index 33bf424b344ab0e6eed9de95b7c70aeec6a63231..0ef8903501d6d43a977cddf8685f36fa3cb211db 100644 (file)
--- a/src/indent.c
+++ b/src/indent.c
@@ -1,13 +1,13 @@
 /* Indentation functions.
-   Copyright (C) 1985-1988, 1993-1995, 1998, 2000-2015 Free Software
+   Copyright (C) 1985-1988, 1993-1995, 1998, 2000-2016 Free Software
    Foundation, Inc.
 
 This file is part of GNU Emacs.
 
 GNU Emacs is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.
 
 GNU Emacs is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -2036,7 +2036,7 @@ whether or not it is currently displayed in some window.  */)
       bool disp_string_at_start_p = 0;
       ptrdiff_t nlines = XINT (lines);
       int vpos_init = 0;
-      double start_col;
+      double start_col IF_LINT (= 0);
       int start_x IF_LINT (= 0);
       int to_x = -1;
 
@@ -2130,6 +2130,15 @@ whether or not it is currently displayed in some window.  */)
              && it.method == GET_FROM_BUFFER
              && it.c == '\n')
            it_overshoot_count = 1;
+         else if (it_overshoot_count == 1 && it.vpos == 0
+                  && it.current_x < it.last_visible_x)
+           {
+             /* If we came to the same screen line as the one where
+                we started, we didn't overshoot the line, and won't
+                need to backtrack after all.  This happens, for
+                example, when PT is in the middle of a composition.  */
+             it_overshoot_count = 0;
+           }
          else if (disp_string_at_start_p && it.vpos > 0)
            {
              /* This is the case of a display string that spans