a patch make vim able to log

log_vim.patch

diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 9040c0d07..e7f040fc2 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -1,3 +1,23 @@
+#include <stdio.h>
+#include <stdarg.h>
+int shouldout = 0;
+int mprintf(char *fmt, ...)
+{
+  static FILE * pf = NULL;
+  if (shouldout)
+  {
+    if (pf == NULL)
+      pf = fopen("/dev/pts/26", "w");
+    int ret;
+    va_list myargs;
+    va_start(myargs, fmt);
+    ret = vfprintf(pf, fmt, myargs);
+    va_end(myargs);
+    return ret;
+  }
+  return 0;
+}
+
 /* vi:set ts=8 sts=4 sw=4 noet:
  *
  * VIM - Vi IMproved   by Bram Moolenaar
diff --git a/src/vim.h b/src/vim.h
index be86c6b10..f2ce16ff7 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -1,3 +1,6 @@
+extern int shouldout; 
+int mprintf(char * fmt, ...);
+
 /* vi:set ts=8 sts=4 sw=4 noet:
  *
  * VIM - Vi IMproved   by Bram Moolenaar