From c4ed86715d3ff32eaf107d8bfce64ba010a35eeb Mon Sep 17 00:00:00 2001
From: Andrew Moore <alm@FreeBSD.org>
Date: Wed, 28 Jul 1993 09:45:29 +0000
Subject: [PATCH] fixed col's entab algorithm which was losing spaces

---
 usr.bin/col/col.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/usr.bin/col/col.c b/usr.bin/col/col.c
index 375bb6cd14..709bfd4cf9 100644
--- a/usr.bin/col/col.c
+++ b/usr.bin/col/col.c
@@ -101,6 +101,9 @@ int no_backspaces;		/* if not to output any backspaces */
 	if (putchar(ch) == EOF) \
 		wrerr();
 
+/* next tabstop after col */
+#define TABSTOP(col,ts)  ((col) + (ts) - (col) % (ts))
+
 main(argc, argv)
 	int argc;
 	char **argv;
@@ -424,10 +427,17 @@ flush_line(l)
 			if (compress_spaces && nspace > 1) {
 				int ntabs;
 
+				while ((ntabs = TABSTOP(last_col, 8)) <= this_col) {
+					PUTC('\t');
+					last_col = ntabs;
+				}
+				nspace = this_col - last_col;
+/*
 				ntabs = this_col / 8 - last_col / 8;
 				nspace -= ntabs * 8;
 				while (--ntabs >= 0)
 					PUTC('\t');
+*/
 			}
 			while (--nspace >= 0)
 				PUTC(' ');
-- 
2.20.1