[PATCH] perl shebangs: Use /usr/bin/env, not /usr/bin/perl

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

Change the Perl Git utilities to use #!/usr/bin/env perl as a shebang
instead of #!/usr/bin/perl. This makes e.g. git-send-email work if
your personal perl has Net::SMTP::SSL, but your system perl doesn't.

This only affects shebangs in the uninstalled source tree. On
installation shebangs will still be munged to PERL_PATH, which is
currently /usr/bin/perl by default.

With this change all the code in Git that uses a shebang now uses
/usr/bin/env, except those things that use /bin/sh and /bin/bash. All
the Python code already used it, and some of the Perl code.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---

This should probably have been a series, not an individual patch since
it depends on <1274453455-1941-1-git-send-email-avarab@gmail.com> to
apply. However the two are functionally independent. I can alter this
one so that it applies to the current master on request, but I'm
guessing the "perl libs: perl -w + use warnings is redundant" patch is
wanted anyway.

 Documentation/build-docdep.perl             |    2 +-
 Documentation/cat-texi.perl                 |    2 +-
 Documentation/cmd-list.perl                 |    2 +-
 Documentation/fix-texi.perl                 |    2 +-
 compat/vcbuild/scripts/clink.pl             |    2 +-
 compat/vcbuild/scripts/lib.pl               |    2 +-
 contrib/blameview/blameview.perl            |    2 +-
 contrib/buildsystems/engine.pl              |    2 +-
 contrib/buildsystems/generate               |    2 +-
 contrib/buildsystems/parse.pl               |    2 +-
 contrib/continuous/cidaemon                 |    2 +-
 contrib/continuous/post-receive-cinotify    |    2 +-
 contrib/examples/git-remote.perl            |    2 +-
 contrib/examples/git-rerere.perl            |    2 +-
 contrib/examples/git-svnimport.perl         |    2 +-
 contrib/fast-import/git-import.perl         |    2 +-
 contrib/fast-import/import-directories.perl |    2 +-
 contrib/fast-import/import-tars.perl        |    2 +-
 contrib/hooks/setgitperms.perl              |    2 +-
 contrib/hooks/update-paranoid               |    2 +-
 contrib/stats/mailmap.pl                    |    2 +-
 contrib/stats/packinfo.pl                   |    2 +-
 git-add--interactive.perl                   |    2 +-
 git-archimport.perl                         |    2 +-
 git-cvsexportcommit.perl                    |    2 +-
 git-cvsimport.perl                          |    2 +-
 git-cvsserver.perl                          |    2 +-
 git-send-email.perl                         |    2 +-
 gitweb/gitweb.perl                          |    2 +-
 t/gitweb-lib.sh                             |    2 +-
 t/t7006/test-terminal.perl                  |    2 +-
 t/t9138-git-svn-authors-prog.sh             |    2 +-
 t/t9700/test.pl                             |    2 +-
 33 files changed, 33 insertions(+), 33 deletions(-)

diff --git a/Documentation/build-docdep.perl b/Documentation/build-docdep.perl
index ba4205e..dc50f21 100755
--- a/Documentation/build-docdep.perl
+++ b/Documentation/build-docdep.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 my %include = ();
 my %included = ();
diff --git a/Documentation/cat-texi.perl b/Documentation/cat-texi.perl
index 828ec62..d96d2f1 100755
--- a/Documentation/cat-texi.perl
+++ b/Documentation/cat-texi.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl -w
 
 my @menu = ();
 my $output = $ARGV[0];
diff --git a/Documentation/cmd-list.perl b/Documentation/cmd-list.perl
index 04f9977..dfb9014 100755
--- a/Documentation/cmd-list.perl
+++ b/Documentation/cmd-list.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl -w
 
 use File::Compare qw(compare);
 
diff --git a/Documentation/fix-texi.perl b/Documentation/fix-texi.perl
index ff7d78f..b87b3ba 100755
--- a/Documentation/fix-texi.perl
+++ b/Documentation/fix-texi.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl -w
 
 while (<>) {
 	if (/^\@setfilename/) {
diff --git a/compat/vcbuild/scripts/clink.pl b/compat/vcbuild/scripts/clink.pl
index 4374771..a5f8d07 100644
--- a/compat/vcbuild/scripts/clink.pl
+++ b/compat/vcbuild/scripts/clink.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl -w
 ######################################################################
 # Compiles or links files
 #
diff --git a/compat/vcbuild/scripts/lib.pl b/compat/vcbuild/scripts/lib.pl
index d8054e4..ee84781 100644
--- a/compat/vcbuild/scripts/lib.pl
+++ b/compat/vcbuild/scripts/lib.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl -w
 ######################################################################
 # Libifies files on Windows
 #
diff --git a/contrib/blameview/blameview.perl b/contrib/blameview/blameview.perl
index 1dec001..438b737 100755
--- a/contrib/blameview/blameview.perl
+++ b/contrib/blameview/blameview.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 use Gtk2 -init;
 use Gtk2::SimpleList;
diff --git a/contrib/buildsystems/engine.pl b/contrib/buildsystems/engine.pl
index 23da787..286d40f 100644
--- a/contrib/buildsystems/engine.pl
+++ b/contrib/buildsystems/engine.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl -w
 ######################################################################
 # Do not call this script directly!
 #
diff --git a/contrib/buildsystems/generate b/contrib/buildsystems/generate
index bc10f25..926eb77 100644
--- a/contrib/buildsystems/generate
+++ b/contrib/buildsystems/generate
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl -w
 ######################################################################
 # Generate buildsystem files
 #
diff --git a/contrib/buildsystems/parse.pl b/contrib/buildsystems/parse.pl
index c9656ec..4dd9132 100644
--- a/contrib/buildsystems/parse.pl
+++ b/contrib/buildsystems/parse.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl -w
 ######################################################################
 # Do not call this script directly!
 #
diff --git a/contrib/continuous/cidaemon b/contrib/continuous/cidaemon
index 4009a15..9f10ce5 100644
--- a/contrib/continuous/cidaemon
+++ b/contrib/continuous/cidaemon
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 #
 # A daemon that waits for update events sent by its companion
 # post-receive-cinotify hook, checks out a new copy of source,
diff --git a/contrib/continuous/post-receive-cinotify b/contrib/continuous/post-receive-cinotify
index b8f5a60..aeef222 100644
--- a/contrib/continuous/post-receive-cinotify
+++ b/contrib/continuous/post-receive-cinotify
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 #
 # A hook that notifies its companion cidaemon through a simple
 # queue file that a ref has been updated via a push (actually
diff --git a/contrib/examples/git-remote.perl b/contrib/examples/git-remote.perl
index b17952a..09db6f5 100755
--- a/contrib/examples/git-remote.perl
+++ b/contrib/examples/git-remote.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl -w
 
 use strict;
 use Git;
diff --git a/contrib/examples/git-rerere.perl b/contrib/examples/git-rerere.perl
index 4f69209..110c27f 100755
--- a/contrib/examples/git-rerere.perl
+++ b/contrib/examples/git-rerere.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 #
 # REuse REcorded REsolve.  This tool records a conflicted automerge
 # result and its hand resolution, and helps to resolve future
diff --git a/contrib/examples/git-svnimport.perl b/contrib/examples/git-svnimport.perl
index ead4c04..c4ded33 100755
--- a/contrib/examples/git-svnimport.perl
+++ b/contrib/examples/git-svnimport.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 # This tool is copyright (c) 2005, Matthias Urlichs.
 # It is released under the Gnu Public License, version 2.
diff --git a/contrib/fast-import/git-import.perl b/contrib/fast-import/git-import.perl
index f9fef6d..275c3b9 100755
--- a/contrib/fast-import/git-import.perl
+++ b/contrib/fast-import/git-import.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 #
 # Performs an initial import of a directory. This is the equivalent
 # of doing 'git init; git add .; git commit'. It's a little slower,
diff --git a/contrib/fast-import/import-directories.perl b/contrib/fast-import/import-directories.perl
index 7f3afa5..a02daa8 100755
--- a/contrib/fast-import/import-directories.perl
+++ b/contrib/fast-import/import-directories.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 #
 # Copyright 2008-2009 Peter Krefting <peter@softwolves.pp.se>
 #
diff --git a/contrib/fast-import/import-tars.perl b/contrib/fast-import/import-tars.perl
index 95438e1..1b667e3 100755
--- a/contrib/fast-import/import-tars.perl
+++ b/contrib/fast-import/import-tars.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 ## tar archive frontend for git-fast-import
 ##
diff --git a/contrib/hooks/setgitperms.perl b/contrib/hooks/setgitperms.perl
index a577ad0..b33f094 100644
--- a/contrib/hooks/setgitperms.perl
+++ b/contrib/hooks/setgitperms.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 #
 # Copyright (c) 2006 Josh England
 #
diff --git a/contrib/hooks/update-paranoid b/contrib/hooks/update-paranoid
index d18b317..95595ac 100644
--- a/contrib/hooks/update-paranoid
+++ b/contrib/hooks/update-paranoid
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 use strict;
 use File::Spec;
diff --git a/contrib/stats/mailmap.pl b/contrib/stats/mailmap.pl
index 4b852e2..af92759 100755
--- a/contrib/stats/mailmap.pl
+++ b/contrib/stats/mailmap.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl -w
 my %mailmap = ();
 open I, "<", ".mailmap";
 while (<I>) {
diff --git a/contrib/stats/packinfo.pl b/contrib/stats/packinfo.pl
index be188c0..51823ac 100755
--- a/contrib/stats/packinfo.pl
+++ b/contrib/stats/packinfo.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 #
 # This tool will print vaguely pretty information about a pack.  It
 # expects the output of "git verify-pack -v" as input on stdin.
diff --git a/git-add--interactive.perl b/git-add--interactive.perl
index c2e7ab4..0826aab 100755
--- a/git-add--interactive.perl
+++ b/git-add--interactive.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 use strict;
 use warnings;
diff --git a/git-archimport.perl b/git-archimport.perl
index 6ee3fca..a5e79fd 100755
--- a/git-archimport.perl
+++ b/git-archimport.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 #
 # This tool is copyright (c) 2005, Martin Langhoff.
 # It is released under the Gnu Public License, version 2.
diff --git a/git-cvsexportcommit.perl b/git-cvsexportcommit.perl
index 59b6722..fac4c6f 100755
--- a/git-cvsexportcommit.perl
+++ b/git-cvsexportcommit.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl -w
 
 use strict;
 use Getopt::Std;
diff --git a/git-cvsimport.perl b/git-cvsimport.perl
index 9e03eee..5470c81 100755
--- a/git-cvsimport.perl
+++ b/git-cvsimport.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl -w
 
 # This tool is copyright (c) 2005, Matthias Urlichs.
 # It is released under the Gnu Public License, version 2.
diff --git a/git-cvsserver.perl b/git-cvsserver.perl
index 13751db..dc1c5dd 100755
--- a/git-cvsserver.perl
+++ b/git-cvsserver.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 ####
 #### This application is a CVS emulation layer for git.
diff --git a/git-send-email.perl b/git-send-email.perl
index bbb03f7..27bdca5 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 #
 # Copyright 2002,2005 Greg Kroah-Hartman <greg@kroah.com>
 # Copyright 2005 Ryan Anderson <ryan@michonline.com>
diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 77e5f79..dbb0cc0 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 # gitweb - simple web interface to track changes in git repositories
 #
diff --git a/t/gitweb-lib.sh b/t/gitweb-lib.sh
index 5a734b1..9572c6a 100644
--- a/t/gitweb-lib.sh
+++ b/t/gitweb-lib.sh
@@ -6,7 +6,7 @@
 gitweb_init () {
 	safe_pwd="$(perl -MPOSIX=getcwd -e 'print quotemeta(getcwd)')"
 	cat >gitweb_config.perl <<EOF
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 # gitweb configuration for tests
 
diff --git a/t/t7006/test-terminal.perl b/t/t7006/test-terminal.perl
index 73ff809..840bab7 100755
--- a/t/t7006/test-terminal.perl
+++ b/t/t7006/test-terminal.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 use strict;
 use warnings;
 use IO::Pty;
diff --git a/t/t9138-git-svn-authors-prog.sh b/t/t9138-git-svn-authors-prog.sh
index 83cc5fc..ac1dcd7 100755
--- a/t/t9138-git-svn-authors-prog.sh
+++ b/t/t9138-git-svn-authors-prog.sh
@@ -8,7 +8,7 @@ test_description='git svn authors prog tests'
 . ./lib-git-svn.sh
 
 cat > svn-authors-prog <<'EOF'
-#!/usr/bin/perl
+#!/usr/bin/env perl
 $_ = shift;
 if (s/-sub$//)  {
 	print "$_ <$_\@sub.example.com>\n";
diff --git a/t/t9700/test.pl b/t/t9700/test.pl
index 666722d..abfc9ba 100755
--- a/t/t9700/test.pl
+++ b/t/t9700/test.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 use lib (split(/:/, $ENV{GITPERLLIB}));
 
 use 5.006002;
-- 
1.7.1.98.g4a5f