Allow mg to log its internal status to a file. At the moment it only

logs line information like front and back pointers in the linked list,
how many characters are used and where the cursor is placed in the
file.

With this diff logging is not switched on by default and has to
compiled into mg.  -DMGLOG has to be added to the Makefile:

CFLAGS+=-Wall -DREGEX -DMGLOG

And the comment character removed from:

#SRCS+=  log.c

ok bcallah@

1 files changed, 10 insertions, 1 deletions

diff --git a/usr.bin/mg/kbd.c b/usr.bin/mg/kbd.c
index 1d7a1a2a39c..0e733e15712 100644
--- a/usr.bin/mg/kbd.c
+++ b/usr.bin/mg/kbd.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: kbd.c,v 1.30 2015/09/26 21:51:58 jasper Exp $	*/
+/*	$OpenBSD: kbd.c,v 1.31 2019/06/10 06:52:44 lum Exp $	*/
 
 /* This file is in the public domain. */
 
@@ -15,6 +15,10 @@
 #include "key.h"
 #include "macro.h"
 
+#ifdef  MGLOG
+#include "log.h"
+#endif
+
 #define METABIT 0x80
 
 #define PROMPTL 80
@@ -152,6 +156,11 @@ doin(void)
 	    getkey(TRUE)), &curmap)) == NULL)
 		/* nothing */;
 
+#ifdef  MGLOG
+	if (!mglog(funct))
+		ewprintf("Problem with logging");
+#endif
+
 	if (macrodef && macrocount < MAXMACRO)
 		macro[macrocount++].m_funct = funct;