Added detection for the Pike language:

http://pike.ida.liu.se/

lib/linguist/languages.yml

@@ -916,6 +916,14 @@ Perl:
   - .psgi
   - .t
 
+Pike:
+  type: programming
+  color: "#066ab2"
+  lexer: C
+  primary_extension: .pike
+  extensions:
+  - .pmod
+
 PowerShell:
   type: programming
   ace_mode: powershell

test/fixtures/rsif.pike

@@ -0,0 +1,22 @@
+#! /usr/bin/env pike
+// -*- pike -*- $Id$
+#pike __REAL_VERSION__
+
+inherit Tools.Standalone.process_files;
+string version = ("$Revision$"/" ")[1];
+string description = "Replaces strings in files.";
+string usage = #"[options] <from> <to> <files>
+
+rsif (\"replace string in file\") replaces all occurrences of the
+string <from> with the string <to> in listed files. The name of the
+files that were changed are written to stdout. Directories may be
+given instead of files, in which case all the files in that directory
+will be processed. Available options:
+" + default_flag_docs;
+
+int want_args = 2;
+
+string process( string input, string from, string to ) {
+  if( has_value( input, from ) )
+    return replace( input, from, to );
+}

test/test_blob.rb

@@ -444,6 +444,9 @@ class TestBlob < Test::Unit::TestCase
 
     # XML
     assert_equal Language['XSLT'], blob("test.xslt").language
+
+    # Pike: http://pike.ida.liu.se/
+    assert_equal Language['Pike'], blob("rsif.pike").language
   end
 
   def test_lexer