patch 7.4.1229
Problem: "eval" and "expr" channel commands don't work yet.
Solution: Implement them. Update the error numbers. Also add "redraw".
diff --git a/src/proto/ex_docmd.pro b/src/proto/ex_docmd.pro
index 0ba0fd7..6ff1588 100644
--- a/src/proto/ex_docmd.pro
+++ b/src/proto/ex_docmd.pro
@@ -46,6 +46,7 @@
void ex_cd(exarg_T *eap);
void do_sleep(long msec);
void ex_may_print(exarg_T *eap);
+void ex_redraw(exarg_T *eap);
int vim_mkdir_emsg(char_u *name, int prot);
FILE *open_exfile(char_u *fname, int forceit, char *mode);
void update_topline_cursor(void);