builtin-grep: allow -<n> and -[ABC]<n> notation for context lines.

diff --git a/builtin-help.c b/builtin-help.c
index 10a59cc403d68166c614f2cf023d62413c5c1fcb..7470faa56692e17608d202000b78a91565360b72 100644 (file)
--- a/builtin-help.c
+++ b/builtin-help.c
@@ -3,6 +3,7 @@
  *
  * Builtin help-related commands (help, usage, version)
  */
+#include <sys/ioctl.h>
 #include "cache.h"
 #include "builtin.h"
 #include "exec_cmd.h"