Add registry file lexer (#819)

2 files changed, 46 insertions, 2 deletions

diff --git a/pygments/lexers/_mapping.py b/pygments/lexers/_mapping.py
index 2c1f0e9a..b52601c4 100644
--- a/pygments/lexers/_mapping.py
+++ b/pygments/lexers/_mapping.py
@@ -226,6 +226,7 @@ LEXERS = {
     'RdLexer': ('pygments.lexers.math', 'Rd', ('rd',), ('*.Rd',), ('text/x-r-doc',)),
     'RebolLexer': ('pygments.lexers.other', 'REBOL', ('rebol',), ('*.r', '*.r3'), ('text/x-rebol',)),
     'RedcodeLexer': ('pygments.lexers.other', 'Redcode', ('redcode',), ('*.cw',), ()),
+    'RegeditLexer': ('pygments.lexers.text', 'reg', (), ('*.reg',), ('text/x-windows-registry',)),
     'RhtmlLexer': ('pygments.lexers.templates', 'RHTML', ('rhtml', 'html+erb', 'html+ruby'), ('*.rhtml',), ('text/html+ruby',)),
     'RstLexer': ('pygments.lexers.text', 'reStructuredText', ('rst', 'rest', 'restructuredtext'), ('*.rst', '*.rest'), ('text/x-rst', 'text/prs.fallenstein.rst')),
     'RubyConsoleLexer': ('pygments.lexers.agile', 'Ruby irb session', ('rbcon', 'irb'), (), ('text/x-ruby-shellsession',)),
diff --git a/pygments/lexers/text.py b/pygments/lexers/text.py
index cff4ddd0..ca50665e 100644
--- a/pygments/lexers/text.py
+++ b/pygments/lexers/text.py
@@ -25,7 +25,7 @@ __all__ = ['IniLexer', 'PropertiesLexer', 'SourcesListLexer', 'BaseMakefileLexer
            'RstLexer', 'VimLexer', 'GettextLexer', 'SquidConfLexer',
            'DebianControlLexer', 'DarcsPatchLexer', 'YamlLexer',
            'LighttpdConfLexer', 'NginxConfLexer', 'CMakeLexer', 'HttpLexer',
-           'PyPyLogLexer']
+           'PyPyLogLexer', 'RegeditLexer']
 
 
 class IniLexer(RegexLexer):
@@ -41,7 +41,7 @@ class IniLexer(RegexLexer):
     tokens = {
         'root': [
             (r'\s+', Text),
-            (r'[;#].*?$', Comment),
+            (r'[;#].*', Comment.Single),
             (r'\[.*?\]$', Keyword),
             (r'(.*?)([ \t]*)(=)([ \t]*)(.*(?:\n[ \t].+)*)',
              bygroups(Name.Attribute, Text, Operator, Text, String))
@@ -55,6 +55,49 @@ class IniLexer(RegexLexer):
         return text[0] == '[' and text[npos-1] == ']'
 
 
+class RegeditLexer(RegexLexer):
+    """
+    Lexer for `Windows Registry
+    <http://en.wikipedia.org/wiki/Windows_Registry#.REG_files>`_ files produced
+    by regedit.
+
+    *New in Pygments 1.6.*
+    """
+
+    name = 'reg'
+    aliases = []
+    filenames = ['*.reg']
+    mimetypes = ['text/x-windows-registry']
+
+    tokens = {
+        'root': [
+            (r'Windows Registry Editor.*', Text),
+            (r'\s+', Text),
+            (r'[;#].*', Comment.Single),
+            (r'(\[)(-?)(HKEY_[A-Z_]+)(.*?\])$',
+             bygroups(Keyword, Operator, Name.Builtin, Keyword)),
+            # String keys, which obey somewhat normal escaping
+            (r'("(?:\\"|\\\\|[^"])+")([ \t]*)(=)([ \t]*)',
+             bygroups(Name.Attribute, Text, Operator, Text),
+             'value'),
+            # Bare keys (includes @)
+            (r'(.*?)([ \t]*)(=)([ \t]*)',
+             bygroups(Name.Attribute, Text, Operator, Text),
+             'value'),
+        ],
+        'value': [
+            (r'-', Operator, '#pop'), # delete value
+            (r'(dword|hex(?:\([0-9a-fA-F]\))?)(:)([0-9a-fA-F,]+)',
+             bygroups(Name.Variable, Punctuation, Number), '#pop'),
+            # As far as I know, .reg files do not support line continuation.
+            (r'.*', String, '#pop'),
+        ]
+    }
+
+    def analyse_text(text):
+        return text.startswith('Windows Registry Editor')
+
+
 class PropertiesLexer(RegexLexer):
     """
     Lexer for configuration files in Java's properties format.