editor variable is now localized, and only gotten if needed
[unix-history] / usr / src / usr.bin / more / help.c
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1/*
2 * Copyright (c) 1988 Mark Nudleman
3 * Copyright (c) 1988 Regents of the University of California.
4 * All rights reserved.
5 *
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6 * Redistribution and use in source and binary forms are permitted
7 * provided that the above copyright notice and this paragraph are
8 * duplicated in all such forms and that any documentation,
9 * advertising materials, and other materials related to such
10 * distribution and use acknowledge that the software was developed
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11 * by Mark Nudleman and the University of California, Berkeley. The
12 * name of Mark Nudleman or the
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13 * University may not be used to endorse or promote products derived
14 * from this software without specific prior written permission.
15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
17 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
18 */
19
20#ifndef lint
a942b40b 21static char sccsid[] = "@(#)help.c 5.4 (Berkeley) %G%";
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22#endif /* not lint */
23
24#include "less.h"
25
26/*
27 * Display some help.
28 * Just invoke another "less" to display the help file.
29 *
30 * {{ This makes this function very simple, and makes changing the
31 * help file very easy, but it may present difficulties on
32 * (non-Unix) systems which do not supply the "system()" function. }}
33 */
34
35 public void
36help()
37{
f5d8beae 38 char cmd[MAXPATHLEN+100];
bfe13c81 39
f5d8beae 40 (void)sprintf(cmd,
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41 "-less -m '-PmHELP -- ?eEND -- Press g to see it again:Press RETURN for more., or q when done ' %s",
42 HELPFILE);
43 lsystem(cmd);
bfe13c81 44}