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* mdocml: When a line (in the sense of term_flushln()) contains white
@ 2014-11-16 21:29 schwarze
  0 siblings, 0 replies; only message in thread
From: schwarze @ 2014-11-16 21:29 UTC (permalink / raw)
  To: source

Log Message:
-----------
When a line (in the sense of term_flushln()) contains white space only, 
the `vbl' variable includes the left margin, but `vis' does not.  
Prevent a `vis' underflow that caused a bogus blank line.
Bug reported by Carsten Kunze, found in less(1): .Bl -tag ... .It " "

Modified Files:
--------------
    mdocml:
        term.c

Revision Data
-------------
Index: term.c
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/term.c,v
retrieving revision 1.234
retrieving revision 1.235
diff -Lterm.c -Lterm.c -u -p -r1.234 -r1.235
--- term.c
+++ term.c
@@ -254,8 +254,10 @@ term_flushln(struct termp *p)
 	 * If there was trailing white space, it was not printed;
 	 * so reset the cursor position accordingly.
 	 */
-	if (vis)
+	if (vis > vbl)
 		vis -= vbl;
+	else
+		vis = 0;
 
 	p->col = 0;
 	p->overstep = 0;
--
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