text: """
      pygments.lexers.configs
      ~~~~~~~~~~~~~~~~~~~~~~~
  
      Lexers for configuration file formats.
  
      :copyright: Copyright 2006-2021 by the Pygments team, see AUTHORS.
      :license: BSD, see LICENSE for details.
  """
  
  import re
  
  from pygments.lexer import RegexLexer, default, words, bygroups, include, using
  from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
      Number, Punctuation, Whitespace, Literal, Generic
  from pygments.lexers.shell import BashLexer
  from pygments.lexers.data import JsonLexer
  
  __all__ = ['IniLexer', 'RegeditLexer', 'PropertiesLexer', 'KconfigLexer',
             'Cfengine3Lexer', 'ApacheConfLexer', 'SquidConfLexer',
             'NginxConfLexer', 'LighttpdConfLexer', 'DockerLexer',
             'TerraformLexer', 'TermcapLexer', 'TerminfoLexer',
             'PkgConfigLexer', 'PacmanConfLexer', 'AugeasLexer', 'TOMLLexer',
             'NestedTextLexer', 'SingularityLexer']
  
  
  class IniLexer(RegexLexer):
      """
      Lexer for configuration files in INI style.
      """
  
      name = 'INI'
      aliases = ['ini', 'cfg', 'dosini']
      filenames = ['*.ini', '*.cfg', '*.inf']
      mimetypes = ['text/x-ini', 'text/inf']
  
      tokens = {
          'root': [
              (r'\s+', Text),
              (r'[;#].*', Comment.Single),
              (r'\[.*?\]$', Keyword),
              (r'(.*?)([ \t]*)(=)([ \t]*)([^\t\n]*)',
               bygroups(Name.Attribute, Text, Operator, Text, String)),
              # standalone option, supported by some INI parsers
              (r'(.+?)$', Name.Attribute),
          ],
      }
  
      def analyse_text(text):
          npos = text.find('\n')
          if npos < 3:
              return False
          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.
  
      .. versionadded:: 1.6
      """
  
      name = 'reg'
      aliases = ['registry']
      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'),
              default('#pop'),
          ]
      }
  
      def analyse_text(text):
          return text.startswith('Windows Registry Editor')
  
  
  class PropertiesLexer(RegexLexer):
      """
      Lexer for configuration files in Java's properties format.
  
      Note: trailing whitespace counts as part of the value as per spec
  
      .. versionadded:: 1.4
      """
  
      name = 'Properties'
      aliases = ['properties', 'jproperties']
      filenames = ['*.properties']
      mimetypes = ['text/x-java-properties']
  
      tokens = {
          'root': [
              (r'^(\w+)([ \t])(\w+\s*)$', bygroups(Name.Attribute, Text, String)),
              (r'^\w+(\\[ \t]\w*)*$', Name.Attribute),
              (r'(^ *)([#!].*)', bygroups(Text, Comment)),
              # More controversial comments
              (r'(^ *)((?:;|//).*)', bygroups(Text, Comment)),
              (r'(.*?)([ \t]*)([=:])([ \t]*)(.*(?:(?<=\\)\n.*)*)',
               bygroups(Name.Attribute, Text, Operator, Text, String)),
              (r'\s', Text),
          ],
      }
  
  
  def _rx_indent(level):
      # Kconfig *always* interprets a tab as 8 spaces, so this is the default.
      # Edit this if you are in an environment where KconfigLexer gets expanded
      # input (tabs expanded to spaces) and the expansion tab width is != 8,
      # e.g. in connection with Trac (trac.ini, [mimeviewer], tab_width).
      # Value range here is 2 <= {tab_width} <= 8.
      tab_width = 8
      # Regex matching a given indentation {level}, assuming that indentation is
      # a multiple of {tab_width}. In other cases there might be problems.
      if tab_width == 2:
          space_repeat = '+'
      else:
          space_repeat = '{1,%d}' % (tab_width - 1)
      if level == 1:
          level_repeat = ''
      else:
          level_repeat = '{%s}' % level
      return r'(?:\t| %s\t| {%s})%s.*\n' % (space_repeat, tab_width, level_repeat)
  
  
  class KconfigLexer(RegexLexer):
      """
      For Linux-style Kconfig files.
  
      .. versionadded:: 1.6
      """
  
      name = 'Kconfig'
      aliases = ['kconfig', 'menuconfig', 'linux-config', 'kernel-config']
      # Adjust this if new kconfig file names appear in your environment
      filenames = ['Kconfig*', '*Config.in*', 'external.in*',
                   'standard-modules.in']
      mimetypes = ['text/x-kconfig']
      # No re.MULTILINE, indentation-aware help text needs line-by-line handling
      flags = 0
  
      def call_indent(level):
          # If indentation >= {level} is detected, enter state 'indent{level}'
          return (_rx_indent(level), String.Doc, 'indent%s' % level)
  
      def do_indent(level):
          # Print paragraphs of indentation level >= {level} as String.Doc,
          # ignoring blank lines. Then return to 'root' state.
          return [
              (_rx_indent(level), String.Doc),
              (r'\s*\n', Text),
              default('#pop:2')
          ]
  
      tokens = {
          'root': [
              (r'\s+', Text),
              (r'#.*?\n', Comment.Single),
              (words((
                  'mainmenu', 'config', 'menuconfig', 'choice', 'endchoice',
                  'comment', 'menu', 'endmenu', 'visible if', 'if', 'endif',
                  'source', 'prompt', 'select', 'depends on', 'default',
                  'range', 'option'), suffix=r'\b'),
               Keyword),
              (r'(---help---|help)[\t ]*\n', Keyword, 'help'),
              (r'(bool|tristate|string|hex|int|defconfig_list|modules|env)\b',
               Name.Builtin),
              (r'[!=&|]', Operator),
              (r'[()]', Punctuation),
              (r'[0-9]+', Number.Integer),
              (r"'(''|[^'])*'", String.Single),
              (r'"(""|[^"])*"', String.Double),
              (r'\S+', Text),
          ],
          # Help text is indented, multi-line and ends when a lower indentation
          # level is detected.
          'help': [
              # Skip blank lines after help token, if any
              (r'\s*\n', Text),
              # Determine the first help line's indentation level heuristically(!).
              # Attention: this is not perfect, but works for 99% of "normal"
              # indentation schemes up to a max. indentation level of 7.
              call_indent(7),
              call_indent(6),
              call_indent(5),
              call_indent(4),
              call_indent(3),
              call_indent(2),
              call_indent(1),
              default('#pop'),  # for incomplete help sections without text
          ],
          # Handle text for indentation levels 7 to 1
          'indent7': do_indent(7),
          'indent6': do_indent(6),
          'indent5': do_indent(5),
          'indent4': do_indent(4),
          'indent3': do_indent(3),
          'indent2': do_indent(2),
          'indent1': do_indent(1),
      }
  
  
  class Cfengine3Lexer(RegexLexer):
      """
      Lexer for `CFEngine3 <http://cfengine.org>`_ policy files.
  
      .. versionadded:: 1.5
      """
  
      name = 'CFEngine3'
      aliases = ['cfengine3', 'cf3']
      filenames = ['*.cf']
      mimetypes = []
  
      tokens = {
          'root': [
              (r'#.*?\n', Comment),
              (r'(body)(\s+)(\S+)(\s+)(control)',
               bygroups(Keyword, Text, Keyword, Text, Keyword)),
              (r'(body|bundle)(\s+)(\S+)(\s+)(\w+)(\()',
               bygroups(Keyword, Text, Keyword, Text, Name.Function, Punctuation),
               'arglist'),
              (r'(body|bundle)(\s+)(\S+)(\s+)(\w+)',
               bygroups(Keyword, Text, Keyword, Text, Name.Function)),
              (r'(")([^"]+)(")(\s+)(string|slist|int|real)(\s*)(=>)(\s*)',
               bygroups(Punctuation, Name.Variable, Punctuation,
                        Text, Keyword.Type, Text, Operator, Text)),
              (r'(\S+)(\s*)(=>)(\s*)',
               bygroups(Keyword.Reserved, Text, Operator, Text)),
              (r'"', String, 'string'),
              (r'(\w+)(\()', bygroups(Name.Function, Punctuation)),
              (r'([\w.!&|()]+)(::)', bygroups(Name.Class, Punctuation)),
              (r'(\w+)(:)', bygroups(Keyword.Declaration, Punctuation)),
              (r'@[{(][^)}]+[})]', Name.Variable),
              (r'[(){},;]', Punctuation),
              (r'=>', Operator),
              (r'->', Operator),
              (r'\d+\.\d+', Number.Float),
              (r'\d+', Number.Integer),
              (r'\w+', Name.Function),
              (r'\s+', Text),
          ],
          'string': [
              (r'\$[{(]', String.Interpol, 'interpol'),
              (r'\\.', String.Escape),
              (r'"', String, '#pop'),
              (r'\n', String),
              (r'.', String),
          ],
          'interpol': [
              (r'\$[{(]', String.Interpol, '#push'),
              (r'[})]', String.Interpol, '#pop'),
              (r'[^${()}]+', String.Interpol),
          ],
          'arglist': [
              (r'\)', Punctuation, '#pop'),
              (r',', Punctuation),
              (r'\w+', Name.Variable),
              (r'\s+', Text),
          ],
      }
  
  
  class ApacheConfLexer(RegexLexer):
      """
      Lexer for configuration files following the Apache config file
      format.
  
      .. versionadded:: 0.6
      """
  
      name = 'ApacheConf'
      aliases = ['apacheconf', 'aconf', 'apache']
      filenames = ['.htaccess', 'apache.conf', 'apache2.conf']
      mimetypes = ['text/x-apacheconf']
      flags = re.MULTILINE | re.IGNORECASE
  
      tokens = {
          'root': [
              (r'\s+', Text),
              (r'#(.*\\\n)+.*$|(#.*?)$', Comment),
              (r'(<[^\s>/][^\s>]*)(?:(\s+)(.*))?(>)',
               bygroups(Name.Tag, Text, String, Name.Tag)),
              (r'(</[^\s>]+)(>)',
               bygroups(Name.Tag, Name.Tag)),
              (r'[a-z]\w*', Name.Builtin, 'value'),
              (r'\.+', Text),
          ],
          'value': [
              (r'\\\n', Text),
              (r'$', Text, '#pop'),
              (r'\\', Text),
              (r'[^\S\n]+', Text),
              (r'\d+\.\d+\.\d+\.\d+(?:/\d+)?', Number),
              (r'\d+', Number),
              (r'/([*a-z0-9][*\w./-]+)', String.Other),
              (r'(on|off|none|any|all|double|email|dns|min|minimal|'
               r'os|productonly|full|emerg|alert|crit|error|warn|'
               r'notice|info|debug|registry|script|inetd|standalone|'
               r'user|group)\b', Keyword),
              (r'"([^"\\]*(?:\\(.|\n)[^"\\]*)*)"', String.Double),
              (r'[^\s"\\]+', Text)
          ],
      }
  
  
  class SquidConfLexer(RegexLexer):
      """
      Lexer for `squid <http://www.squid-cache.org/>`_ configuration files.
  
      .. versionadded:: 0.9
      """
  
      name = 'SquidConf'
      aliases = ['squidconf', 'squid.conf', 'squid']
      filenames = ['squid.conf']
      mimetypes = ['text/x-squidconf']
      flags = re.IGNORECASE
  
      keywords = (
          "access_log", "acl", "always_direct", "announce_host",
          "announce_period", "announce_port", "announce_to", "anonymize_headers",
          "append_domain", "as_whois_server", "auth_param_basic",
          "authenticate_children", "authenticate_program", "authenticate_ttl",
          "broken_posts", "buffered_logs", "cache_access_log", "cache_announce",
          "cache_dir", "cache_dns_program", "cache_effective_group",
          "cache_effective_user", "cache_host", "cache_host_acl",
          "cache_host_domain", "cache_log", "cache_mem", "cache_mem_high",
          "cache_mem_low", "cache_mgr", "cachemgr_passwd", "cache_peer",
          "cache_peer_access", "cache_replacement_policy", "cache_stoplist",
          "cache_stoplist_pattern", "cache_store_log", "cache_swap",
          "cache_swap_high", "cache_swap_log", "cache_swap_low", "client_db",
          "client_lifetime", "client_netmask", "connect_timeout", "coredump_dir",
          "dead_peer_timeout", "debug_options", "delay_access", "delay_class",
          "delay_initial_bucket_level", "delay_parameters", "delay_pools",
          "deny_info", "dns_children", "dns_defnames", "dns_nameservers",
          "dns_testnames", "emulate_httpd_log", "err_html_text",
          "fake_user_agent", "firewall_ip", "forwarded_for", "forward_snmpd_port",
          "fqdncache_size", "ftpget_options", "ftpget_program", "ftp_list_width",
          "ftp_passive", "ftp_user", "half_closed_clients", "header_access",
          "header_replace", "hierarchy_stoplist", "high_response_time_warning",
          "high_page_fault_warning", "hosts_file", "htcp_port", "http_access",
          "http_anonymizer", "httpd_accel", "httpd_accel_host",
          "httpd_accel_port", "httpd_accel_uses_host_header",
          "httpd_accel_with_proxy", "http_port", "http_reply_access",
          "icp_access", "icp_hit_stale", "icp_port", "icp_query_timeout",
          "ident_lookup", "ident_lookup_access", "ident_timeout",
          "incoming_http_average", "incoming_icp_average", "inside_firewall",
          "ipcache_high", "ipcache_low", "ipcache_size", "local_domain",
          "local_ip", "logfile_rotate", "log_fqdn", "log_icp_queries",
          "log_mime_hdrs", "maximum_object_size", "maximum_single_addr_tries",
          "mcast_groups", "mcast_icp_query_timeout", "mcast_miss_addr",
          "mcast_miss_encode_key", "mcast_miss_port", "memory_pools",
          "memory_pools_limit", "memory_replacement_policy", "mime_table",
          "min_http_poll_cnt", "min_icp_poll_cnt", "minimum_direct_hops",
          "minimum_object_size", "minimum_retry_timeout", "miss_access",
          "negative_dns_ttl", "negative_ttl", "neighbor_timeout",
          "neighbor_type_domain", "netdb_high", "netdb_low", "netdb_ping_period",
          "netdb_ping_rate", "never_direct", "no_cache", "passthrough_proxy",
          "pconn_timeout", "pid_filename", "pinger_program", "positive_dns_ttl",
          "prefer_direct", "proxy_auth", "proxy_auth_realm", "query_icmp",
          "quick_abort", "quick_abort_max", "quick_abort_min",
          "quick_abort_pct", "range_offset_limit", "read_timeout",
          "redirect_children", "redirect_program",
          "redirect_rewrites_host_header", "reference_age",
          "refresh_pattern", "reload_into_ims", "request_body_max_size",
          "request_size", "request_timeout", "shutdown_lifetime",
          "single_parent_bypass", "siteselect_timeout", "snmp_access",
          "snmp_incoming_address", "snmp_port", "source_ping", "ssl_proxy",
          "store_avg_object_size", "store_objects_per_bucket",
          "strip_query_terms", "swap_level1_dirs", "swap_level2_dirs",
          "tcp_incoming_address", "tcp_outgoing_address", "tcp_recv_bufsize",
          "test_reachability", "udp_hit_obj", "udp_hit_obj_size",
          "udp_incoming_address", "udp_outgoing_address", "unique_hostname",
          "unlinkd_program", "uri_whitespace", "useragent_log",
          "visible_hostname", "wais_relay", "wais_relay_host", "wais_relay_port",
      )
  
      opts = (
          "proxy-only", "weight", "ttl", "no-query", "default", "round-robin",
          "multicast-responder", "on", "off", "all", "deny", "allow", "via",
          "parent", "no-digest", "heap", "lru", "realm", "children", "q1", "q2",
          "credentialsttl", "none", "disable", "offline_toggle", "diskd",
      )
  
      actions = (
          "shutdown", "info", "parameter", "server_list", "client_list",
          r'squid.conf',
      )
  
      actions_stats = (
          "objects", "vm_objects", "utilization", "ipcache", "fqdncache", "dns",
          "redirector", "io", "reply_headers", "filedescriptors", "netdb",
      )
  
      actions_log = ("status", "enable", "disable", "clear")
  
      acls = (
          "url_regex", "urlpath_regex", "referer_regex", "port", "proto",
          "req_mime_type", "rep_mime_type", "method", "browser", "user", "src",
          "dst", "time", "dstdomain", "ident", "snmp_community",
      )
  
      ip_re = (
          r'(?:(?:(?:[3-9]\d?|2(?:5[0-5]|[0-4]?\d)?|1\d{0,2}|0x0*[0-9a-f]{1,2}|'
          r'0+[1-3]?[0-7]{0,2})(?:\.(?:[3-9]\d?|2(?:5[0-5]|[0-4]?\d)?|1\d{0,2}|'
          r'0x0*[0-9a-f]{1,2}|0+[1-3]?[0-7]{0,2})){3})|(?!.*::.*::)(?:(?!:)|'
          r':(?=:))(?:[0-9a-f]{0,4}(?:(?<=::)|(?<!::):)){6}(?:[0-9a-f]{0,4}'
          r'(?:(?<=::)|(?<!::):)[0-9a-f]{0,4}(?:(?<=::)|(?<!:)|(?<=:)(?<!::):)|'
          r'(?:25[0-4]|2[0-4]\d|1\d\d|[1-9]?\d)(?:\.(?:25[0-4]|2[0-4]\d|1\d\d|'
          r'[1-9]?\d)){3}))'
      )
  
      tokens = {
          'root': [
              (r'\s+', Whitespace),
              (r'#', Comment, 'comment'),
              (words(keywords, prefix=r'\b', suffix=r'\b'), Keyword),
              (words(opts, prefix=r'\b', suffix=r'\b'), Name.Constant),
              # Actions
              (words(actions, prefix=r'\b', suffix=r'\b'), String),
              (words(actions_stats, prefix=r'stats/', suffix=r'\b'), String),
              (words(actions_log, prefix=r'log/', suffix=r'='), String),
              (words(acls, prefix=r'\b', suffix=r'\b'), Keyword),
              (ip_re + r'(?:/(?:' + ip_re + r'|\b\d+\b))?', Number.Float),
              (r'(?:\b\d+\b(?:-\b\d+|%)?)', Number),
              (r'\S+', Text),
          ],
          'comment': [
              (r'\s*TAG:.*', String.Escape, '#pop'),
              (r'.+', Comment, '#pop'),
              default('#pop'),
          ],
      }
  
  
  class NginxConfLexer(RegexLexer):
      """
      Lexer for `Nginx <http://nginx.net/>`_ configuration files.
  
      .. versionadded:: 0.11
      """
      name = 'Nginx configuration file'
      aliases = ['nginx']
      filenames = ['nginx.conf']
      mimetypes = ['text/x-nginx-conf']
  
      tokens = {
          'root': [
              (r'(include)(\s+)([^\s;]+)', bygroups(Keyword, Text, Name)),
              (r'[^\s;#]+', Keyword, 'stmt'),
              include('base'),
          ],
          'block': [
              (r'\}', Punctuation, '#pop:2'),
              (r'[^\s;#]+', Keyword.Namespace, 'stmt'),
              include('base'),
          ],
          'stmt': [
              (r'\{', Punctuation, 'block'),
              (r';', Punctuation, '#pop'),
              include('base'),
          ],
          'base': [
              (r'#.*\n', Comment.Single),
              (r'on|off', Name.Constant),
              (r'\$[^\s;#()]+', Name.Variable),
              (r'([a-z0-9.-]+)(:)([0-9]+)',
               bygroups(Name, Punctuation, Number.Integer)),
              (r'[a-z-]+/[a-z-+]+', String),  # mimetype
              # (r'[a-zA-Z._-]+', Keyword),
              (r'[0-9]+[km]?\b', Number.Integer),
              (r'(~)(\s*)([^\s{]+)', bygroups(Punctuation, Text, String.Regex)),
              (r'[:=~]', Punctuation),
              (r'[^\s;#{}$]+', String),  # catch all
              (r'/[^\s;#]*', Name),  # pathname
              (r'\s+', Text),
              (r'[$;]', Text),  # leftover characters
          ],
      }
  
  
  class LighttpdConfLexer(RegexLexer):
      """
      Lexer for `Lighttpd <http://lighttpd.net/>`_ configuration files.
  
      .. versionadded:: 0.11
      """
      name = 'Lighttpd configuration file'
      aliases = ['lighttpd', 'lighty']
      filenames = ['lighttpd.conf']
      mimetypes = ['text/x-lighttpd-conf']
  
      tokens = {
          'root': [
              (r'#.*\n', Comment.Single),
              (r'/\S*', Name),  # pathname
              (r'[a-zA-Z._-]+', Keyword),
              (r'\d+\.\d+\.\d+\.\d+(?:/\d+)?', Number),
              (r'[0-9]+', Number),
              (r'=>|=~|\+=|==|=|\+', Operator),
              (r'\$[A-Z]+', Name.Builtin),
              (r'[(){}\[\],]', Punctuation),
              (r'"([^"\\]*(?:\\.[^"\\]*)*)"', String.Double),
              (r'\s+', Text),
          ],
  
      }
  
  
  class DockerLexer(RegexLexer):
      """
      Lexer for `Docker <http://docker.io>`_ configuration files.
  
      .. versionadded:: 2.0
      """
      name = 'Docker'
      aliases = ['docker', 'dockerfile']
      filenames = ['Dockerfile', '*.docker']
      mimetypes = ['text/x-dockerfile-config']
  
      _keywords = (r'(?:MAINTAINER|EXPOSE|WORKDIR|USER|STOPSIGNAL)')
      _bash_keywords = (r'(?:RUN|CMD|ENTRYPOINT|ENV|ARG|LABEL|ADD|COPY)')
      _lb = r'(?:\s*\\?\s*)'  # dockerfile line break regex
      flags = re.IGNORECASE | re.MULTILINE
  
      tokens = {
          'root': [
              (r'#.*', Comment),
              (r'(FROM)([ \t]*)(\S*)([ \t]*)(?:(AS)([ \t]*)(\S*))?',
               bygroups(Keyword, Text, String, Text, Keyword, Text, String)),
              (r'(ONBUILD)(%s)' % (_lb,), bygroups(Keyword, using(BashLexer))),
              (r'(HEALTHCHECK)((%s--\w+=\w+%s)*)' % (_lb, _lb),
                  bygroups(Keyword, using(BashLexer))),
              (r'(VOLUME|ENTRYPOINT|CMD|SHELL)(%s)(\[.*?\])' % (_lb,),
                  bygroups(Keyword, using(BashLexer), using(JsonLexer))),
              (r'(LABEL|ENV|ARG)((%s\w+=\w+%s)*)' % (_lb, _lb),
                  bygroups(Keyword, using(BashLexer))),
              (r'(%s|VOLUME)\b(.*)' % (_keywords), bygroups(Keyword, String)),
              (r'(%s)' % (_bash_keywords,), Keyword),
              (r'(.*\\\n)*.+', using(BashLexer)),
          ]
      }
  
  
  class TerraformLexer(RegexLexer):
      """
      Lexer for `terraformi .tf files <https://www.terraform.io/>`_.
  
      .. versionadded:: 2.1
      """
  
      name = 'Terraform'
      aliases = ['terraform', 'tf']
      filenames = ['*.tf']
      mimetypes = ['application/x-tf', 'application/x-terraform']
  
      classes = ('backend', 'data', 'module', 'output', 'provider',
               'provisioner', 'resource', 'variable')
      classes_re = "({})".format(('|').join(classes))
  
      types = ('string', 'number', 'bool', 'list', 'tuple', 'map', 'object', 'null')
  
      numeric_functions = ('abs', 'ceil', 'floor', 'log', 'max',
                           'mix', 'parseint', 'pow', 'signum')
  
      string_functions = ('chomp', 'format', 'formatlist', 'indent',
                          'join', 'lower', 'regex', 'regexall', 'replace',
                          'split', 'strrev', 'substr', 'title', 'trim',
                          'trimprefix', 'trimsuffix', 'trimspace', 'upper'
                          )
  
      collection_functions = ('alltrue', 'anytrue', 'chunklist', 'coalesce',
                              'coalescelist', 'compact', 'concat', 'contains',
                              'distinct', 'element', 'flatten', 'index', 'keys',
                              'length', 'list', 'lookup', 'map', 'matchkeys',
                              'merge', 'range', 'reverse', 'setintersection',
                              'setproduct', 'setsubtract', 'setunion', 'slice',
                              'sort', 'sum', 'transpose', 'values', 'zipmap'
                              )
  
      encoding_functions = ('base64decode', 'base64encode', 'base64gzip',
                            'csvdecode', 'jsondecode', 'jsonencode', 'textdecodebase64',
                            'textencodebase64', 'urlencode', 'yamldecode', 'yamlencode')
  
  
      filesystem_functions = ('abspath', 'dirname', 'pathexpand', 'basename',
                              'file', 'fileexists', 'fileset', 'filebase64', 'templatefile')
  
      date_time_functions = ('formatdate', 'timeadd', 'timestamp')
  
      hash_crypto_functions = ('base64sha256', 'base64sha512', 'bcrypt', 'filebase64sha256',
                               'filebase64sha512', 'filemd5', 'filesha1', 'filesha256', 'filesha512',
                               'md5', 'rsadecrypt', 'sha1', 'sha256', 'sha512', 'uuid', 'uuidv5')
  
      ip_network_functions = ('cidrhost', 'cidrnetmask', 'cidrsubnet', 'cidrsubnets')
  
      type_conversion_functions = ('can', 'defaults', 'tobool', 'tolist', 'tomap',
                                   'tonumber', 'toset', 'tostring', 'try')
  
      builtins = numeric_functions + string_functions + collection_functions + encoding_functions +\
          filesystem_functions + date_time_functions + hash_crypto_functions + ip_network_functions +\
          type_conversion_functions
      builtins_re = "({})".format(('|').join(builtins))
  
      tokens = {
          'root': [
              include('basic'),
              include('whitespace'),
  
              # Strings
              (r'(".*")', bygroups(String.Double)),
  
              # Constants
              (words(('true', 'false'), prefix=r'\b', suffix=r'\b'), Name.Constant),
  
              # Types
              (words(types, prefix=r'\b', suffix=r'\b'), Keyword.Type),
  
              include('identifier'),
              include('punctuation'),
              (r'[0-9]+', Number),
          ],
          'basic': [
              (r'\s*/\*', Comment.Multiline, 'comment'),
              (r'\s*#.*\n', Comment.Single),
              include('whitespace'),
  
              # e.g. terraform {
              # e.g. egress {
              (r'(\s*)([0-9a-zA-Z-_]+)(\s*)(=?)(\s*)(\{)',
               bygroups(Text, Name.Builtin, Text, Operator, Text, Punctuation)),
  
              # Assignment with attributes, e.g. something = ...
              (r'(\s*)([0-9a-zA-Z-_]+)(\s*)(=)(\s*)',
               bygroups(Text, Name.Attribute, Text, Operator, Text)),
  
              # Assignment with environment variables and similar, e.g. "something" = ...
              # or key value assignment, e.g. "SlotName" : ...
              (r'(\s*)("\S+")(\s*)([=:])(\s*)',
               bygroups(Text, Literal.String.Double, Text, Operator, Text)),
  
              # Functions, e.g. jsonencode(element("value"))
              (builtins_re + r'(\()', bygroups(Name.Function, Punctuation)),
  
              # List of attributes, e.g. ignore_changes = [last_modified, filename]
              (r'(\[)([a-z_,\s]+)(\])', bygroups(Punctuation, Name.Builtin, Punctuation)),
  
              # e.g. resource "aws_security_group" "allow_tls" {
              # e.g. backend "consul" {
              (classes_re + r'(\s+)', bygroups(Keyword.Reserved, Text), 'blockname'),
          ],
          'blockname': [
              # e.g. resource "aws_security_group" "allow_tls" {
              # e.g. backend "consul" {
              (r'(\s*)("[0-9a-zA-Z-_]+")?(\s*)("[0-9a-zA-Z-_]+")(\s+)(\{)',
               bygroups(Text, Name.Class, Text, Name.Variable, Text, Punctuation)),
          ],
          'identifier': [
              (r'\b(var\.[0-9a-zA-Z-_\.\[\]]+)\b', bygroups(Name.Variable)),
              (r'\b([0-9a-zA-Z-_\[\]]+\.[0-9a-zA-Z-_\.\[\]]+)\b', bygroups(Name.Variable)),
          ],
          'punctuation': [
              (r'[\[\]()\{\},.?:!=]', Punctuation),
          ],
          'comment': [
              (r'[^*/]', Comment.Multiline),
              (r'/\*', Comment.Multiline, '#push'),
              (r'\*/', Comment.Multiline, '#pop'),
              (r'[*/]', Comment.Multiline)
          ],
          'whitespace': [
              (r'\n', Text),
              (r'\s+', Text),
              (r'\\\n', Text),
          ],
      }
  
  
  class TermcapLexer(RegexLexer):
      """
      Lexer for termcap database source.
  
      This is very simple and minimal.
  
      .. versionadded:: 2.1
      """
      name = 'Termcap'
      aliases = ['termcap']
      filenames = ['termcap', 'termcap.src']
      mimetypes = []
  
      # NOTE:
      #   * multiline with trailing backslash
      #   * separator is ':'
      #   * to embed colon as data, we must use \072
      #   * space after separator is not allowed (mayve)
      tokens = {
          'root': [
              (r'^#.*$', Comment),
              (r'^[^\s#:|]+', Name.Tag, 'names'),
          ],
          'names': [
              (r'\n', Text, '#pop'),
              (r':', Punctuation, 'defs'),
              (r'\|', Punctuation),
              (r'[^:|]+', Name.Attribute),
          ],
          'defs': [
              (r'\\\n[ \t]*', Text),
              (r'\n[ \t]*', Text, '#pop:2'),
              (r'(#)([0-9]+)', bygroups(Operator, Number)),
              (r'=', Operator, 'data'),
              (r':', Punctuation),
              (r'[^\s:=#]+', Name.Class),
          ],
          'data': [
              (r'\\072', Literal),
              (r':', Punctuation, '#pop'),
              (r'[^:\\]+', Literal),  # for performance
              (r'.', Literal),
          ],
      }
  
  
  class TerminfoLexer(RegexLexer):
      """
      Lexer for terminfo database source.
  
      This is very simple and minimal.
  
      .. versionadded:: 2.1
      """
      name = 'Terminfo'
      aliases = ['terminfo']
      filenames = ['terminfo', 'terminfo.src']
      mimetypes = []
  
      # NOTE:
      #   * multiline with leading whitespace
      #   * separator is ','
      #   * to embed comma as data, we can use \,
      #   * space after separator is allowed
      tokens = {
          'root': [
              (r'^#.*$', Comment),
              (r'^[^\s#,|]+', Name.Tag, 'names'),
          ],
          'names': [
              (r'\n', Text, '#pop'),
              (r'(,)([ \t]*)', bygroups(Punctuation, Text), 'defs'),
              (r'\|', Punctuation),
              (r'[^,|]+', Name.Attribute),
          ],
          'defs': [
              (r'\n[ \t]+', Text),
              (r'\n', Text, '#pop:2'),
              (r'(#)([0-9]+)', bygroups(Operator, Number)),
              (r'=', Operator, 'data'),
              (r'(,)([ \t]*)', bygroups(Punctuation, Text)),
              (r'[^\s,=#]+', Name.Class),
          ],
          'data': [
              (r'\\[,\\]', Literal),
              (r'(,)([ \t]*)', bygroups(Punctuation, Text), '#pop'),
              (r'[^\\,]+', Literal),  # for performance
              (r'.', Literal),
          ],
      }
  
  
  class PkgConfigLexer(RegexLexer):
      """
      Lexer for `pkg-config
      <http://www.freedesktop.org/wiki/Software/pkg-config/>`_
      (see also `manual page <http://linux.die.net/man/1/pkg-config>`_).
  
      .. versionadded:: 2.1
      """
  
      name = 'PkgConfig'
      aliases = ['pkgconfig']
      filenames = ['*.pc']
      mimetypes = []
  
      tokens = {
          'root': [
              (r'#.*$', Comment.Single),
  
              # variable definitions
              (r'^(\w+)(=)', bygroups(Name.Attribute, Operator)),
  
              # keyword lines
              (r'^([\w.]+)(:)',
               bygroups(Name.Tag, Punctuation), 'spvalue'),
  
              # variable references
              include('interp'),
  
              # fallback
              (r'[^${}#=:\n.]+', Text),
              (r'.', Text),
          ],
          'interp': [
              # you can escape literal "$" as "$$"
              (r'\$\$', Text),
  
              # variable references
              (r'\$\{', String.Interpol, 'curly'),
          ],
          'curly': [
              (r'\}', String.Interpol, '#pop'),
              (r'\w+', Name.Attribute),
          ],
          'spvalue': [
              include('interp'),
  
              (r'#.*$', Comment.Single, '#pop'),
              (r'\n', Text, '#pop'),
  
              # fallback
              (r'[^${}#\n]+', Text),
              (r'.', Text),
          ],
      }
  
  
  class PacmanConfLexer(RegexLexer):
      """
      Lexer for `pacman.conf
      <https://www.archlinux.org/pacman/pacman.conf.5.html>`_.
  
      Actually, IniLexer works almost fine for this format,
      but it yield error token. It is because pacman.conf has
      a form without assignment like:
  
          UseSyslog
          Color
          TotalDownload
          CheckSpace
          VerbosePkgLists
  
      These are flags to switch on.
  
      .. versionadded:: 2.1
      """
  
      name = 'PacmanConf'
      aliases = ['pacmanconf']
      filenames = ['pacman.conf']
      mimetypes = []
  
      tokens = {
          'root': [
              # comment
              (r'#.*$', Comment.Single),
  
              # section header
              (r'^\s*\[.*?\]\s*$', Keyword),
  
              # variable definitions
              # (Leading space is allowed...)
              (r'(\w+)(\s*)(=)',
               bygroups(Name.Attribute, Text, Operator)),
  
              # flags to on
              (r'^(\s*)(\w+)(\s*)$',
               bygroups(Text, Name.Attribute, Text)),
  
              # built-in special values
              (words((
                  '$repo',  # repository
                  '$arch',  # architecture
                  '%o',     # outfile
                  '%u',     # url
                  ), suffix=r'\b'),
               Name.Variable),
  
              # fallback
              (r'.', Text),
          ],
      }
  
  
  class AugeasLexer(RegexLexer):
      """
      Lexer for `Augeas <http://augeas.net>`_.
  
      .. versionadded:: 2.4
      """
      name = 'Augeas'
      aliases = ['augeas']
      filenames = ['*.aug']
  
      tokens = {
          'root': [
              (r'(module)(\s*)([^\s=]+)', bygroups(Keyword.Namespace, Text, Name.Namespace)),
              (r'(let)(\s*)([^\s=]+)', bygroups(Keyword.Declaration, Text, Name.Variable)),
              (r'(del|store|value|counter|seq|key|label|autoload|incl|excl|transform|test|get|put)(\s+)', bygroups(Name.Builtin, Text)),
              (r'(\()([^:]+)(\:)(unit|string|regexp|lens|tree|filter)(\))', bygroups(Punctuation, Name.Variable, Punctuation, Keyword.Type, Punctuation)),
              (r'\(\*', Comment.Multiline, 'comment'),
              (r'[*+\-.;=?|]', Operator),
              (r'[()\[\]{}]', Operator),
              (r'"', String.Double, 'string'),
              (r'\/', String.Regex, 'regex'),
              (r'([A-Z]\w*)(\.)(\w+)', bygroups(Name.Namespace, Punctuation, Name.Variable)),
              (r'.', Name.Variable),
              (r'\s', Text),
          ],
          'string': [
              (r'\\.', String.Escape),
              (r'[^"]', String.Double),
              (r'"', String.Double, '#pop'),
          ],
          'regex': [
              (r'\\.', String.Escape),
              (r'[^/]', String.Regex),
              (r'\/', String.Regex, '#pop'),
          ],
          'comment': [
              (r'[^*)]', Comment.Multiline),
              (r'\(\*', Comment.Multiline, '#push'),
              (r'\*\)', Comment.Multiline, '#pop'),
              (r'[)*]', Comment.Multiline)
          ],
      }
  
  
  class TOMLLexer(RegexLexer):
      """
      Lexer for `TOML <https://github.com/toml-lang/toml>`_, a simple language
      for config files.
  
      .. versionadded:: 2.4
      """
  
      name = 'TOML'
      aliases = ['toml']
      filenames = ['*.toml', 'Pipfile', 'poetry.lock']
  
      tokens = {
          'root': [
  
              # Basics, comments, strings
              (r'\s+', Text),
              (r'#.*?$', Comment.Single),
              # Basic string
              (r'"(\\\\|\\[^\\]|[^"\\])*"', String),
              # Literal string
              (r'\'\'\'(.*)\'\'\'', String),
              (r'\'[^\']*\'', String),
              (r'(true|false)$', Keyword.Constant),
              (r'[a-zA-Z_][\w\-]*', Name),
  
              (r'\[.*?\]$', Keyword),
              # Datetime
              # TODO this needs to be expanded, as TOML is rather flexible:
              # https://github.com/toml-lang/toml#offset-date-time
              (r'\d{4}-\d{2}-\d{2}(?:T| )\d{2}:\d{2}:\d{2}(?:Z|[-+]\d{2}:\d{2})', Number.Integer),
  
              # Numbers
              (r'(\d+\.\d*|\d*\.\d+)([eE][+-]?[0-9]+)?j?', Number.Float),
              (r'\d+[eE][+-]?[0-9]+j?', Number.Float),
              # Handle +-inf, +-infinity, +-nan
              (r'[+-]?(?:(inf(?:inity)?)|nan)', Number.Float),
              (r'[+-]?\d+', Number.Integer),
  
              # Punctuation
              (r'[]{}:(),;[]', Punctuation),
              (r'\.', Punctuation),
  
              # Operators
              (r'=', Operator)
  
          ]
      }
  
  class NestedTextLexer(RegexLexer):
      """
      Lexer for `NextedText <https://nestedtext.org>`_, a human-friendly data 
      format.
      
      .. versionadded:: 2.9
      """
  
      name = 'NestedText'
      aliases = ['nestedtext', 'nt']
      filenames = ['*.nt']
  
      _quoted_dict_item = r'^(\s*)({0})(.*?)({0}: ?)(.*?)(\s*)$'
  
      tokens = {
          'root': [
              (r'^(\s*)(#.*?)$', bygroups(Text, Comment)),
              (r'^(\s*)(> ?)(.*?)(\s*)$', bygroups(Text, Punctuation, String, Whitespace)),
              (r'^(\s*)(- ?)(.*?)(\s*)$', bygroups(Text, Punctuation, String, Whitespace)),
              (_quoted_dict_item.format("'"), bygroups(Text, Punctuation, Name, Punctuation, String, Whitespace)),
              (_quoted_dict_item.format('"'), bygroups(Text, Punctuation, Name, Punctuation, String, Whitespace)),
              (r'^(\s*)(.*?)(: ?)(.*?)(\s*)$', bygroups(Text, Name, Punctuation, String, Whitespace)),
          ],
      }
          
  
  class SingularityLexer(RegexLexer):
      """
      Lexer for `Singularity definition files
      <https://www.sylabs.io/guides/3.0/user-guide/definition_files.html>`_.
  
      .. versionadded:: 2.6
      """
  
      name = 'Singularity'
      aliases = ['singularity']
      filenames = ['*.def', 'Singularity']
      flags = re.IGNORECASE | re.MULTILINE | re.DOTALL
  
      _headers = r'^(\s*)(bootstrap|from|osversion|mirrorurl|include|registry|namespace|includecmd)(:)'
      _section = r'^%(?:pre|post|setup|environment|help|labels|test|runscript|files|startscript)\b'
      _appsect = r'^%app(?:install|help|run|labels|env|test|files)\b'
  
      tokens = {
          'root': [
              (_section, Generic.Heading, 'script'),
              (_appsect, Generic.Heading, 'script'),
              (_headers, bygroups(Text, Keyword, Text)),
              (r'\s*#.*?\n', Comment),
              (r'\b(([0-9]+\.?[0-9]*)|(\.[0-9]+))\b', Number),
              (r'(?!^\s*%).', Text),
          ],
          'script': [
              (r'(.+?(?=^\s*%))|(.*)', using(BashLexer), '#pop'),
          ],
      }
  
      def analyse_text(text):
          """This is a quite simple script file, but there are a few keywords
          which seem unique to this language."""
          result = 0
          if re.search(r'\b(?:osversion|includecmd|mirrorurl)\b', text, re.IGNORECASE):
              result += 0.5
  
          if re.search(SingularityLexer._section[1:], text):
              result += 0.49
  
          return result
  