gitweb: Always use three argument form of open

From 94638fb6edf3ea693228c680a6a30271ccd77522 Mon Sep 17 00:00:00 2001
From: Jakub Narebski <[email protected]>
Date: Mon, 11 May 2009 03:25:55 +0200
Subject: [PATCH] gitweb: Localize magic variable $/

Instead of undefining and then restoring magic variable $/ (input
record separator) for 'slurp mode', localize it.

While at it, state explicitely that "local $/;" makes it undefined, by
using explicit  "local $/ = undef;".

Signed-off-by: Jakub Narebski <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: jnareb

gitweb/gitweb.perl

@@ -3325,7 +3325,7 @@ sub git_get_link_target {
 	open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
 		or return;
 	{
-		local $/;
+		local $/ = undef;
 		$link_target = <$fd>;
 	}
 	close $fd
@@ -4800,11 +4800,10 @@ sub git_blob_plain {
 		-content_disposition =>
 			($sandbox ? 'attachment' : 'inline')
 			. '; filename="' . $save_as . '"');
-	undef $/;
+	local $/ = undef;
 	binmode STDOUT, ':raw';
 	print <$fd>;
 	binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
-	$/ = "\n";
 	close $fd;
 }
 
@@ -4906,12 +4905,16 @@ sub git_tree {
 		}
 	}
 	die_error(404, "No such tree") unless defined($hash);
-	$/ = "\0";
-	open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
-		or die_error(500, "Open git-ls-tree failed");
-	my @entries = map { chomp; $_ } <$fd>;
-	close $fd or die_error(404, "Reading tree failed");
-	$/ = "\n";
+
+	my @entries = ();
+	{
+		local $/ = "\0";
+		open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
+			or die_error(500, "Open git-ls-tree failed");
+		@entries = map { chomp; $_ } <$fd>;
+		close $fd
+			or die_error(404, "Reading tree failed");
+	}
 
 	my $refs = git_get_references();
 	my $ref = format_ref_marker($refs, $hash_base);
@@ -5806,7 +5809,7 @@ sub git_search {
 
 		print "<table class=\"pickaxe search\">\n";
 		my $alternate = 1;
-		$/ = "\n";
+		local $/ = "\n";
 		open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
 			'--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
 			($search_use_regexp ? '--pickaxe-regex' : ());
@@ -5876,7 +5879,7 @@ sub git_search {
 		print "<table class=\"grep_search\">\n";
 		my $alternate = 1;
 		my $matches = 0;
-		$/ = "\n";
+		local $/ = "\n";
 		open my $fd, "-|", git_cmd(), 'grep', '-n',
 			$search_use_regexp ? ('-E', '-i') : '-F',
 			$searchtext, $co{'tree'};