[Emacs-diffs] trunk r115973: src/xdisp.c (try_window_id): Update commentary.

[Eli Zaretskii]

------------------------------------------------------------
revno: 115973
revision-id: address@hidden
parent: address@hidden
committer: Eli Zaretskii <address@hidden>
branch nick: trunk
timestamp: Sat 2014-01-11 13:28:57 +0200
message:
  src/xdisp.c (try_window_id): Update commentary.
modified:
  src/xdisp.c                    xdisp.c-20091113204419-o5vbwnq5f7feedwu-240

=== modified file 'src/xdisp.c'
--- a/src/xdisp.c       2014-01-11 09:31:09 +0000
+++ b/src/xdisp.c       2014-01-11 11:28:57 +0000
@@ -17333,9 +17333,16 @@
 
    Value is
 
-   1   if display has been updated
+   >= 1        if successful, i.e. display has been updated
+         specifically:
+         1 means the changes were in front of a newline that precedes
+           the window start, and the whole current matrix was reused
+         2 means the changes were after the last position displayed
+           in the window, and the whole current matrix was reused
+         3 means portions of the current matrix were reused, while
+           some of the screen lines were redrawn
+   -1  if redisplay with same window start is known not to succeed
    0   if otherwise unsuccessful
-   -1  if redisplay with same window start is known not to succeed
 
    The following steps are performed: