05-30-2014
Sorry, I edited my post because, I thought it was irrelevant what I was going to propose.
Quote:
Note also that ^a[123]\([0-9]\{1,3\}\)\?\+ (on systems that accept that form of RE) wouldn't do what was wanted even if it was a valid BRE): it precludes a4 through a9, a40 through a99, and a400 through a999 which, presumably, would have been wanted as part of the vertical elipsis between the lines starting with a3 and a3000.
I would have been wrong as well because I believe it would have done a3000 - a3999
Last edited by Aia; 05-30-2014 at 01:12 AM..
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LEARN ABOUT LINUX
vga_waitretrace
vga_waitretrace(3) Svgalib User Manual vga_waitretrace(3)
NAME
vga_waitretrace - wait for vertical retrace.
SYNOPSIS
#include <vga.h>
void vga_waitretrace(void);
DESCRIPTION
Wait for vertical retrace, that is when the video beam goes dark and returns from the bottom line to the top line. Useful to synchronize
animation with monitor refresh.
However, Linux is a multiuser OS, thus some time might have passed already when the function returns. Also, not all cards support this in
all modes (or with more or less good results).
SEE ALSO
svgalib(7), vgagl(7), libvga.config(5), scrolltest(6),
AUTHOR
This manual page was edited by Michael Weller <eowmob@exp-math.uni-essen.de>. The exact source of the referenced function as well as of the
original documentation is unknown.
It is very likely that both are at least to some extent are due to Harm Hanemaayer <H.Hanemaayer@inter.nl.net>.
Occasionally this might be wrong. I hereby asked to be excused by the original author and will happily accept any additions or corrections
to this first version of the svgalib manual.
Svgalib (>= 1.2.11) 27 July 1997 vga_waitretrace(3)