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bring manpage and debug code of exportfs -P closer to reality

--- a/sys/man/4/exportfs

+++ b/sys/man/4/exportfs

@@ -126,7 +126,7 @@

 to be matched against path names

 relative to the current working directory

 and starting with

-.BR ./ .

+.BR / .

 For a file to be exported, all lines with a prefix

 .B +

 must match and all those with prefix

@@ -204,7 +204,7 @@

 .IP

 .EX

 cd /n/dump

-echo '+ ^\e.(/2003(/10..(/usr(/glenda/?)?)?)?)?' > /tmp/pattern

+echo '+ ^/(2003(/10..(/usr(/glenda/?)?)?)?)?' > /tmp/pattern

 echo '- \e.(aes|pgp)$' >> /tmp/pattern

 exportfs -P /tmp/pattern

 .EE

--- a/sys/src/cmd/exportfs/pattern.c

+++ b/sys/src/cmd/exportfs/pattern.c

@@ -80,16 +80,16 @@

 	else

 		p = path+1;

-	DEBUG(DFD, "checking %s\n", path);

+	DEBUG(DFD, "checking %s\n", p);

 	for(re = include; *re != nil; re++){

 		if(regexec(*re, p, nil, 0) != 1){

-			DEBUG(DFD, "excluded+ %s\n", path);

+			DEBUG(DFD, "excluded+ %s\n", p);

 			return -1;

 		}

 	}

 	for(re = exclude; *re != nil; re++){

 		if(regexec(*re, p, nil, 0) == 1){

-			DEBUG(DFD, "excluded- %s\n", path);

+			DEBUG(DFD, "excluded- %s\n", p);

 			return -1;

 		}

 	}

-- 

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