[Emacs-diffs] emacs/src coding.c

[YAMAMOTO Mitsuharu]

CVSROOT:        /sources/emacs
Module name:    emacs
Changes by:     YAMAMOTO Mitsuharu <mituharu>   09/06/19 08:39:33

Modified files:
        src            : coding.c 

Log message:
        (Ffind_coding_systems_region_internal): Cache checked characters.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/emacs/src/coding.c?cvsroot=emacs&r1=1.435&r2=1.436

Patches:
Index: coding.c
===================================================================
RCS file: /sources/emacs/emacs/src/coding.c,v
retrieving revision 1.435
retrieving revision 1.436
diff -u -b -r1.435 -r1.436
--- coding.c    18 Jun 2009 10:29:03 -0000      1.435
+++ coding.c    19 Jun 2009 08:39:33 -0000      1.436
@@ -8640,7 +8640,7 @@
   EMACS_INT start_byte, end_byte;
   const unsigned char *p, *pbeg, *pend;
   int c;
-  Lisp_Object tail, elt;
+  Lisp_Object tail, elt, work_table;
 
   if (STRINGP (start))
     {
@@ -8698,6 +8698,7 @@
   while (p < pend && ASCII_BYTE_P (*p)) p++;
   while (p < pend && ASCII_BYTE_P (*(pend - 1))) pend--;
 
+  work_table = Fmake_char_table (Qnil, Qnil);
   while (p < pend)
     {
       if (ASCII_BYTE_P (*p))
@@ -8705,6 +8706,9 @@
       else
        {
          c = STRING_CHAR_ADVANCE (p);
+         if (!NILP (char_table_ref (work_table, c)))
+           /* This character was already checked.  Ignore it.  */
+           continue;
 
          charset_map_loaded = 0;
          for (tail = coding_attrs_list; CONSP (tail);)
@@ -8736,6 +8740,7 @@
              p = pbeg + p_offset;
              pend = pbeg + pend_offset;
            }
+         char_table_set (work_table, c, Qt);
        }
     }