Support MANPATH as an alias for manpath

[Baptiste Daroussin <bapt@FreeBSD.org>]

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Hi,

I would like to minimize the modifications for FreeBSD when I will replace our
home made man(1) command to the mandoc one.

There is at least 2 thing I do want to keep:
MANPATH and MANCONFIG (I can skip MANLOCALE given I don't see a real usage for
it :))

Here is a first patch to support MANPATH

Best regards,
Bapt

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? :!
? ChangeLog
? Makefile.local
? config.h
? config.log
? demandoc
? makewhatis
? mandoc
? plop
? read.c.diff
? support-MANPATH.diff
Index: man.conf.5
===================================================================
RCS file: /cvs/mdocml/man.conf.5,v
retrieving revision 1.3
diff -u -r1.3 man.conf.5
--- man.conf.5	27 Mar 2015 21:33:20 -0000	1.3
+++ man.conf.5	2 Apr 2015 22:21:05 -0000
@@ -102,6 +102,9 @@
 but using a historic and misleading syntax.
 It is kept for backward compatibility for now,
 but will eventually be removed.
+.It Ic MANPATH Ar path
+This directive provides the same finctionality as
+.Ic manpath .
 .El
 .Sh FILES
 .Pa /etc/man.conf
Index: manpath.c
===================================================================
RCS file: /cvs/mdocml/manpath.c,v
retrieving revision 1.23
diff -u -r1.23 manpath.c
--- manpath.c	27 Mar 2015 17:37:25 -0000	1.23
+++ manpath.c	2 Apr 2015 22:21:05 -0000
@@ -209,7 +209,9 @@
 static void
 manconf_file(struct manconf *conf, const char *file)
 {
-	const char *const toks[] = { "manpath", "output", "_whatdb" };
+	const char *const toks[] = {
+	    "MANPATH", "manpath", "output", "_whatdb"
+	};
 
 	FILE		*stream;
 	char		*cp, *ep;
@@ -241,17 +243,18 @@
 		}
 
 		switch (tok) {
-		case 2:  /* _whatdb */
+		case 3:  /* _whatdb */
 			while (ep > cp && ep[-1] != '/')
 				ep--;
 			if (ep == cp)
 				continue;
 			*ep = '\0';
 			/* FALLTHROUGH */
-		case 0:  /* manpath */
+		case 1:  /* manpath */
+		case 0:  /* MANPATH */
 			manpath_add(&conf->manpath, cp, 0);
 			break;
-		case 1:  /* output */
+		case 2:  /* output */
 			manconf_output(&conf->output, cp);
 			break;
 		default:

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