patch 8.1.1966: some code in options.c fits better elsewhere
Problem: Some code in options.c fits better elsewhere.
Solution: Move functions from options.c to other files. (Yegappan
Lakshmanan, closes #4889)
diff --git a/src/proto/map.pro b/src/proto/map.pro
index 3aa93e9..05d66fb 100644
--- a/src/proto/map.pro
+++ b/src/proto/map.pro
@@ -19,6 +19,9 @@
void get_maparg(typval_T *argvars, typval_T *rettv, int exact);
void init_mappings(void);
void add_map(char_u *map, int mode);
+int langmap_adjust_mb(int c);
+void langmap_init(void);
+void langmap_set(void);
void ex_abbreviate(exarg_T *eap);
void ex_map(exarg_T *eap);
void ex_unmap(exarg_T *eap);