diff --git a/src/vim.h b/src/vim.h
index 18c3ff8..398fcc5 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -561,6 +561,7 @@
 # endif
 /* These are in os_win32.c */
 extern char *(*dyn_libintl_gettext)(const char *msgid);
+extern char *(*dyn_libintl_ngettext)(const char *msgid, const char *msgid_plural, unsigned long n);
 extern char *(*dyn_libintl_bindtextdomain)(const char *domainname, const char *dirname);
 extern char *(*dyn_libintl_bind_textdomain_codeset)(const char *domainname, const char *codeset);
 extern char *(*dyn_libintl_textdomain)(const char *domainname);
@@ -574,6 +575,7 @@
 #ifdef FEAT_GETTEXT
 # ifdef DYNAMIC_GETTEXT
 #  define _(x) (*dyn_libintl_gettext)((char *)(x))
+#  define ngettext(x, xs, n) (*dyn_libintl_ngettext)((char *)(x), (char *)(xs), (n))
 #  define N_(x) x
 #  define bindtextdomain(domain, dir) (*dyn_libintl_bindtextdomain)((domain), (dir))
 #  define bind_textdomain_codeset(domain, codeset) (*dyn_libintl_bind_textdomain_codeset)((domain), (codeset))
@@ -592,6 +594,7 @@
 # endif
 #else
 # define _(x) ((char *)(x))
+# define ngettext(x, xs, n) (((n) == 1) ? (char *)(x) : (char *)(xs))
 # define N_(x) x
 # ifdef bindtextdomain
 #  undef bindtextdomain
@@ -1501,6 +1504,8 @@
 # define MSG_BUF_CLEN  MSG_BUF_LEN	    /* cell length */
 #endif
 
+#define FOLD_TEXT_LEN  51	/* buffer size for get_foldtext() */
+
 /* Size of the buffer used for tgetent().  Unfortunately this is largely
  * undocumented, some systems use 1024.  Using a buffer that is too small
  * causes a buffer overrun and a crash.  Use the maximum known value to stay