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[p5sagit/local-lib.git] / lib / local / lib.pm

diff --git a/lib/local/lib.pm b/lib/local/lib.pm
index 2e0ca1b..c466e4e 100644 (file)
--- a/lib/local/lib.pm
+++ b/lib/local/lib.pm
@@ -10,7 +10,7 @@ use File::Spec ();
 use File::Path ();
 use Config;
 
-our $VERSION = '1.008007'; # 1.8.4
+our $VERSION = '1.008011'; # 1.8.11
 
 our @KNOWN_FLAGS = qw(--self-contained --deactivate --deactivate-all);
 
@@ -29,7 +29,8 @@ sub import {
   my %arg_store;
   for my $arg (@args) {
     # check for lethal dash first to stop processing before causing problems
-    if ($arg =~ /−/) {
+    # the fancy dash is U+2212 or \xE2\x88\x92
+    if ($arg =~ /\xE2\x88\x92/ or $arg =~ /−/) {
       die <<'DEATH';
 WHOA THERE! It looks like you've got some fancy dashes in your commandline!
 These are *not* the traditional -- dashes that software recognizes. You
@@ -207,7 +208,13 @@ sub setup_local_lib_for {
   my $interpolate = LITERAL_ENV;
   my @active_lls = $class->active_paths;
 
-  $path = $class->ensure_dir_structure_for($path);
+  $class->ensure_dir_structure_for($path);
+
+  # On Win32 directories often contain spaces. But some parts of the CPAN
+  # toolchain don't like that. To avoid this, GetShortPathName() gives us
+  # an alternate representation that has none.
+  # This only works if the directory already exists.
+  $path = Win32::GetShortPathName($path) if $^O eq 'MSWin32';
 
   if (! $deactivating) {
     if (@active_lls && $active_lls[-1] eq $path) {
@@ -228,7 +235,15 @@ sub setup_local_lib_for {
     exit 0;
   } else {
     $class->setup_env_hash_for($path, $deactivating);
-    @INC = _uniq(split($Config{path_sep}, $ENV{PERL5LIB}), @INC);
+    my $arch_dir = $Config{archname};
+    @INC = _uniq(
+  (
+      # Inject $path/$archname for each path in PERL5LIB
+      map { ( File::Spec->catdir($_, $arch_dir), $_ ) }
+      split($Config{path_sep}, $ENV{PERL5LIB})
+  ),
+  @INC
+    );
   }
 }
 
@@ -253,11 +268,7 @@ sub ensure_dir_structure_for {
     warn "Attempting to create directory ${path}\n";
   }
   File::Path::mkpath($path);
-  # Need to have the path exist to make a short name for it, so
-  # converting to a short name here.
-  $path = Win32::GetShortPathName($path) if $^O eq 'MSWin32';
-
-  return $path;
+  return
 }
 
 sub guess_shelltype {
@@ -375,7 +386,7 @@ my %ENV_LIST_VALUE_DEFAULTS = (
     filter => sub { 1 },
     empty => undef,
 );
-sub _env_list_value(%@) {
+sub _env_list_value {
   my $options = shift;
   die(sprintf "unknown option '$_' at %s line %u\n", (caller)[1..2])
     for grep { !exists $ENV_LIST_VALUE_DEFAULTS{$_} } keys %$options;
@@ -395,7 +406,7 @@ sub _env_list_value(%@) {
                  && (!$options{exists} || -e $_))
     } map {
       if (ref $_ eq 'SCALAR' && $options{interpolate} == INTERPOLATE_ENV) {
-        exists $ENV{${$_}} ? (split /\Q$Config{path_sep}/, $ENV{${$_}}) : ()
+        defined $ENV{${$_}} ? (split /\Q$Config{path_sep}/, $ENV{${$_}}) : ()
       } else {
         $_
       }
@@ -417,12 +428,12 @@ sub build_activate_environment_vars_for {
     PERL5LIB =>
             _env_list_value(
               { interpolate => $interpolate, exists => 0, empty => '' },
-              $class->install_base_arch_path($path),
               $class->install_base_perl_path($path),
               \'PERL5LIB',
             ),
     PATH => _env_list_value(
               { interpolate => $interpolate, exists => 0, empty => '' },
+        $class->install_base_bin_path($path),
               \'PATH',
             ),
   )
@@ -432,7 +443,7 @@ sub active_paths {
   my ($class) = @_;
 
   return () unless defined $ENV{PERL_LOCAL_LIB_ROOT};
-  return split /\Q$Config{path_sep}/, $ENV{PERL_LOCAL_LIB_ROOT};
+  return grep { $_ ne '' } split /\Q$Config{path_sep}/, $ENV{PERL_LOCAL_LIB_ROOT};
 }
 
 sub build_deactivate_environment_vars_for {
@@ -478,18 +489,9 @@ sub build_deactivate_environment_vars_for {
   # If removing ourselves from the "top of the stack", set install paths to
   # correspond with the new top of stack.
   if ($active_lls[-1] eq $path) {
-    if (@active_lls > 1) {
-      my $new_top = $active_lls[-2];
-      %env = (%env,
-        PERL_MB_OPT => "--install_base ${new_top}",
-        PERL_MM_OPT => "INSTALL_BASE=${new_top}",
-      );
-    } else {
-      %env = (%env,
-        PERL_MB_OPT => undef,
-        PERL_MM_OPT => undef,
-      );
-    }
+    my $new_top = $active_lls[-2];
+    $env{PERL_MB_OPT} = defined($new_top) ? "--install_base ${new_top}" : undef;
+    $env{PERL_MM_OPT} = defined($new_top) ? "INSTALL_BASE=${new_top}" : undef;
   }
 
   return %env;
@@ -970,10 +972,10 @@ install UNINST=1" and local::lib if you understand these possible consequences.
 =head1 LIMITATIONS
 
 The perl toolchain is unable to handle directory names with spaces in it,
-so you cant put your local::lib bootstrap into a directory with spaces. What
+so you can't put your local::lib bootstrap into a directory with spaces. What
 you can do is moving your local::lib to a directory with spaces B<after> you
 installed all modules inside your local::lib bootstrap. But be aware that you
-cant update or install CPAN modules after the move.
+can't update or install CPAN modules after the move.
 
 Rather basic shell detection. Right now anything with csh in its name is
 assumed to be a C shell or something compatible, and everything else is assumed
@@ -1023,6 +1025,14 @@ On Win32 systems, C<COMSPEC> is also examined.
 
 =back
 
+=head1 SEE ALSO
+
+=over 4
+
+=item * L<Perl Advent article, 2011|http://perladvent.org/2011/2011-12-01.html>
+
+=back
+
 =head1 SUPPORT
 
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