diff options
Diffstat (limited to 'src/buffer.c')
| -rw-r--r-- | src/buffer.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/src/buffer.c b/src/buffer.c index ce9dc1c274d..4d590248e24 100644 --- a/src/buffer.c +++ b/src/buffer.c @@ -1,7 +1,7 @@ /* Buffer manipulation primitives for GNU Emacs. Copyright (C) 1985, 1986, 1987, 1988, 1989, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, - 2003, 2004, 2005, 2006, 2007, 2008, 2009 + 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. This file is part of GNU Emacs. @@ -704,7 +704,7 @@ reset_buffer (b) b->clip_changed = 0; b->prevent_redisplay_optimizations_p = 1; b->backed_up = Qnil; - b->auto_save_modified = 0; + BUF_AUTOSAVE_MODIFF (b) = 0; b->auto_save_failure_time = -1; b->auto_save_file_name = Qnil; b->read_only = Qnil; @@ -1132,7 +1132,25 @@ A non-nil FLAG means mark the buffer modified. */) } #endif /* CLASH_DETECTION */ - SAVE_MODIFF = NILP (flag) ? MODIFF : 0; + /* Here we have a problem. SAVE_MODIFF is used here to encode + buffer-modified-p (as SAVE_MODIFF<MODIFF) as well as + recent-auto-save-p (as SAVE_MODIFF<auto_save_modified). So if we + modify SAVE_MODIFF to affect one, we may affect the other + as well. + E.g. if FLAG is nil we need to set SAVE_MODIFF to MODIFF, but + if SAVE_MODIFF<auto_save_modified that means we risk changing + recent-auto-save-p from t to nil. + Vice versa, if FLAG is non-nil and SAVE_MODIFF>=auto_save_modified + we risk changing recent-auto-save-p from nil to t. */ + SAVE_MODIFF = (NILP (flag) + /* FIXME: This unavoidably sets recent-auto-save-p to nil. */ + ? MODIFF + /* Let's try to preserve recent-auto-save-p. */ + : SAVE_MODIFF < MODIFF ? SAVE_MODIFF + /* If SAVE_MODIFF == auto_save_modified == MODIFF, + we can either decrease SAVE_MODIFF and auto_save_modified + or increase MODIFF. */ + : MODIFF++); /* Set update_mode_lines only if buffer is displayed in some window. Packages like jit-lock or lazy-lock preserve a buffer's modified @@ -1541,8 +1559,8 @@ with SIGHUP. */) /* Delete any auto-save file, if we saved it in this session. But not if the buffer is modified. */ if (STRINGP (b->auto_save_file_name) - && b->auto_save_modified != 0 - && BUF_SAVE_MODIFF (b) < b->auto_save_modified + && BUF_AUTOSAVE_MODIFF (b) != 0 + && BUF_SAVE_MODIFF (b) < BUF_AUTOSAVE_MODIFF (b) && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b) && NILP (Fsymbol_value (intern ("auto-save-visited-file-name")))) { |