patch 9.0.0449: there is no easy way to translate a key code into a string
Problem: There is no easy way to translate a string with a key code into a
readable string.
Solution: Add the keytrans() function. (closes #11114)
diff --git a/src/proto/message.pro b/src/proto/message.pro
index 3f8a8fe..6657a08 100644
--- a/src/proto/message.pro
+++ b/src/proto/message.pro
@@ -37,8 +37,8 @@
int msg_outtrans_len_attr(char_u *msgstr, int len, int attr);
void msg_make(char_u *arg);
int msg_outtrans_special(char_u *strstart, int from, int maxlen);
-char_u *str2special_save(char_u *str, int is_lhs);
-char_u *str2special(char_u **sp, int from);
+char_u *str2special_save(char_u *str, int replace_spaces, int replace_lt);
+char_u *str2special(char_u **sp, int replace_spaces, int replace_lt);
void str2specialbuf(char_u *sp, char_u *buf, int len);
void msg_prt_line(char_u *s, int list);
void msg_puts(char *s);