Make several tests not check files multiple times via symlinks

t/no-tabs.t

@@ -29,8 +29,9 @@ sub checkFile
     # The file.
     my $file = $File::Find::name;
 
-    # We don't care about directories
+    # We don't care about directories or symbolic links
     return if ( ! -f $file );
+    return if (   -l $file );
 
     # Nor about backup files.
     return if ( $file =~ /~$/ );

t/perl-syntax.t

@@ -35,8 +35,9 @@ sub checkFile
     # The file.
     my $file = $File::Find::name;
 
-    # We don't care about directories
+    # We don't care about directories or symbolic links
     return if ( ! -f $file );
+    return if (   -l $file );
 
     # Nor about Makefiles
     return if ( $file =~ /\/Makefile$/ );

t/portable-shell.t

@@ -37,8 +37,9 @@ sub checkFile
     # The file.
     my $file = $File::Find::name;
 
-    # We don't care about directories
+    # We don't care about directories or symbolic links
     return if ( ! -f $file );
+    return if (   -l $file );
 
     # We're only testing things beneath hooks
     return if ( $file !~ /hooks/ );

t/quoted-strings.t

@@ -33,8 +33,9 @@ sub checkFile
     # The file.
     my $file = $File::Find::name;
 
-    # We don't care about directories
+    # We don't care about directories or symbolic links
     return if ( ! -f $file );
+    return if (   -l $file );
 
     # Finally mercurial files are fine.
     return if ( $file =~ /\.hg\// );

t/shell-syntax.t

@@ -31,8 +31,9 @@ sub checkFile
     # The file.
     my $file = $File::Find::name;
 
-    # We don't care about directories
+    # We don't care about directories or symbolic links
     return if ( ! -f $file );
+    return if (   -l $file );
 
     # We don't care about empty files
     return unless -s $file;