Add optional arguments LOCALE and IGNORE-CASE to collation functions.

* fns.c (Fstring_collate_lessp, Fstring_collate_equalp):
Add optional arguments LOCALE and IGNORE-CASE.

* lisp.h (str_collate): Adapt argument list.

* sysdep.c (LC_CTYPE, LC_CTYPE_MASK, towlower_l):
Define substitutes for platforms that lack them.
(str_collate): Add arguments locale and ignore_case.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/lisp.h b/src/lisp.h
index 7cbbb299896..d31c5ae50c3 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -4301,7 +4301,7 @@ extern void lock_file (Lisp_Object);
 extern void unlock_file (Lisp_Object);
 extern void unlock_buffer (struct buffer *);
 extern void syms_of_filelock (void);
-extern int str_collate (Lisp_Object, Lisp_Object);
+extern int str_collate (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object);
 
 /* Defined in sound.c.  */
 extern void syms_of_sound (void);