patch 8.1.1891: functions used in one file are global
Problem: Functions used in one file are global.
Solution: Add "static". (Yegappan Lakshmanan, closes #4840)
diff --git a/src/undo.c b/src/undo.c
index a23c263..b9c203c 100644
--- a/src/undo.c
+++ b/src/undo.c
@@ -123,6 +123,7 @@
static void serialize_visualinfo(bufinfo_T *bi, visualinfo_T *info);
static void unserialize_visualinfo(bufinfo_T *bi, visualinfo_T *info);
#endif
+static void u_saveline(linenr_T lnum);
#define U_ALLOC_LINE(size) lalloc(size, FALSE)
@@ -3435,7 +3436,7 @@
/*
* Save the line "lnum" for the "U" command.
*/
- void
+ static void
u_saveline(linenr_T lnum)
{
if (lnum == curbuf->b_u_line_lnum) /* line is already saved */