Fix bug #13262 with crashes in completion on MS-Windows with non-ASCII filenames.

 src/fileio.c (file_name_as_directory, directory_file_name): Accept
 an additional argument MULTIBYTE to indicate whether the input C
 came from a multibyte or a unibyte Lisp string; all callers
 adjusted.  Don't assume the input string is always multibyte.
 (Ffile_name_directory) [DOS_NT]: Handle unibyte strings correctly:
 don't ENCODE_FILE them, and return a unibyte string if the input
 was unibyte.
 (Fexpand_file_name): Don't mix unibyte with multibyte strings, and
 don't assume the input strings will always be multibyte.  If the
 input strings are multibyte, decode strings obtained from C
 library functions.

1 files changed, 15 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index e8d5449a99e..c8cc486a9de 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,18 @@
+2012-12-24  Eli Zaretskii  <eliz@gnu.org>
+
+        * fileio.c (file_name_as_directory, directory_file_name): Accept
+        an additional argument MULTIBYTE to indicate whether the input C
+        came from a multibyte or a unibyte Lisp string; all callers
+        adjusted.  Don't assume the input string is always multibyte.
+        (Bug#13262)
+        (Ffile_name_directory) [DOS_NT]: Handle unibyte strings correctly:
+        don't ENCODE_FILE them, and return a unibyte string if the input
+        was unibyte.
+        (Fexpand_file_name): Don't mix unibyte with multibyte strings, and
+        don't assume the input strings will always be multibyte.  If the
+        input strings are multibyte, decode strings obtained from C
+        library functions.
+
 2012-12-22  Martin Rudalics  <rudalics@gmx.at>
 
         * window.c (Fselect_window): Reword doc-string (Bug#13248).