X-Git-Url: http://git.hcoop.net/bpt/emacs.git/blobdiff_plain/76667214e7bdc7f6196de2bb6d7e14ef879a2694..acaf905b1130aae80fa59d2c861ffd4c8eb75486:/src/composite.c

diff --git a/src/composite.c b/src/composite.c
index 2a3fbe2955..c44c8e565d 100644
--- a/src/composite.c
+++ b/src/composite.c
@@ -1,5 +1,5 @@
 /* Composite sequence support.
-   Copyright (C) 2001-2011 Free Software Foundation, Inc.
+   Copyright (C) 2001-2012 Free Software Foundation, Inc.
    Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
      National Institute of Advanced Industrial Science and Technology (AIST)
      Registration Number H14PRO021
@@ -345,6 +345,8 @@ get_composition_id (EMACS_INT charpos, EMACS_INT bytepos, EMACS_INT nchars,
 	{
 	  int this_width;
 	  ch = XINT (key_contents[i]);
+	  /* TAB in a composition means display glyphs with padding
+	     space on the left or right.  */
 	  this_width = (ch == '\t' ? 1 : CHAR_WIDTH (ch));
 	  if (cmp->width < this_width)
 	    cmp->width = this_width;
@@ -1305,7 +1307,7 @@ composition_reseat_it (struct composition_it *cmp_it, EMACS_INT charpos, EMACS_I
 	      if (cmp_it->lookback == 0)
 		goto no_composition;
 	      lgstring = Qnil;
-	      /* Try to find a shorter compostion that starts after CPOS.  */
+	      /* Try to find a shorter composition that starts after CPOS.  */
 	      composition_compute_stop_pos (cmp_it, charpos, bytepos, cpos,
 					    string);
 	      if (cmp_it->ch == -2 || cmp_it->stop_pos < charpos)
@@ -1384,6 +1386,8 @@ composition_update_it (struct composition_it *cmp_it, EMACS_INT charpos, EMACS_I
       else
 	{
 	  for (i = 0; i < cmp->glyph_len; i++)
+	    /* TAB in a composition means display glyphs with padding
+	       space on the left or right.  */
 	    if ((c = COMPOSITION_GLYPH (cmp, i)) != '\t')
 	      break;
 	  if (c == '\t')