text: # -*- coding: utf-8 -*-
  """
      pygments.lexers.matlab
      ~~~~~~~~~~~~~~~~~~~~~~
  
      Lexers for Matlab and related languages.
  
      :copyright: Copyright 2006-2021 by the Pygments team, see AUTHORS.
      :license: BSD, see LICENSE for details.
  """
  
  import re
  
  from pygments.lexer import Lexer, RegexLexer, bygroups, default, words, \
      do_insertions
  from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
      Number, Punctuation, Generic, Whitespace
  
  from pygments.lexers import _scilab_builtins
  
  __all__ = ['MatlabLexer', 'MatlabSessionLexer', 'OctaveLexer', 'ScilabLexer']
  
  
  class MatlabLexer(RegexLexer):
      """
      For Matlab source code.
  
      .. versionadded:: 0.10
      """
      name = 'Matlab'
      aliases = ['matlab']
      filenames = ['*.m']
      mimetypes = ['text/matlab']
  
      #
      # These lists are generated automatically.
      # Run the following in bash shell:
      #
      # for f in elfun specfun elmat; do
      #   echo -n "$f = "
      #   matlab -nojvm -r "help $f;exit;" | perl -ne \
      #   'push(@c,$1) if /^    (\w+)\s+-/; END {print q{["}.join(q{","},@c).qq{"]\n};}'
      # done
      #
      # elfun: Elementary math functions
      # specfun: Special Math functions
      # elmat: Elementary matrices and matrix manipulation
      #
      # taken from Matlab version 9.4 (R2018a)
      #
      elfun = ("sin", "sind", "sinh", "asin", "asind", "asinh", "cos", "cosd", "cosh",
               "acos", "acosd", "acosh", "tan", "tand", "tanh", "atan", "atand", "atan2",
               "atan2d", "atanh", "sec", "secd", "sech", "asec", "asecd", "asech", "csc", "cscd",
               "csch", "acsc", "acscd", "acsch", "cot", "cotd", "coth", "acot", "acotd",
               "acoth", "hypot", "deg2rad", "rad2deg", "exp", "expm1", "log", "log1p", "log10", "log2", "pow2",
               "realpow", "reallog", "realsqrt", "sqrt", "nthroot", "nextpow2", "abs",
               "angle", "complex", "conj", "imag", "real", "unwrap", "isreal", "cplxpair",
               "fix", "floor", "ceil", "round", "mod", "rem", "sign")
      specfun = ("airy", "besselj", "bessely", "besselh", "besseli", "besselk", "beta",
                 "betainc", "betaincinv", "betaln", "ellipj", "ellipke", "erf", "erfc", "erfcx",
                 "erfinv", "erfcinv", "expint", "gamma", "gammainc", "gammaincinv", "gammaln", "psi", "legendre",
                 "cross", "dot", "factor", "isprime", "primes", "gcd", "lcm", "rat",
                 "rats", "perms", "nchoosek", "factorial", "cart2sph", "cart2pol",
                 "pol2cart", "sph2cart", "hsv2rgb", "rgb2hsv")
      elmat = ("zeros", "ones", "eye", "repmat", "repelem", "linspace", "logspace",
               "freqspace", "meshgrid", "accumarray", "size", "length", "ndims", "numel",
               "disp", "isempty", "isequal", "isequaln", "cat", "reshape",
               "diag", "blkdiag", "tril", "triu", "fliplr", "flipud", "flip", "rot90",
               "find", "end", "sub2ind", "ind2sub", "bsxfun", "ndgrid", "permute",
               "ipermute", "shiftdim", "circshift", "squeeze", "isscalar", "isvector",
               "isrow", "iscolumn", "ismatrix", "eps", "realmax", "realmin", "intmax", "intmin", "flintmax", "pi", "i", "inf", "nan", "isnan",
               "isinf", "isfinite", "j", "true", "false", "compan", "gallery", "hadamard", "hankel",
               "hilb", "invhilb", "magic", "pascal", "rosser", "toeplitz", "vander",
               "wilkinson")
  
      _operators = r'-|==|~=|<=|>=|<|>|&&|&|~|\|\|?|\.\*|\*|\+|\.\^|\.\\|\./|/|\\'
  
      tokens = {
          'root': [
              # line starting with '!' is sent as a system command.  not sure what
              # label to use...
              (r'^!.*', String.Other),
              (r'%\{\s*\n', Comment.Multiline, 'blockcomment'),
              (r'%.*$', Comment),
              (r'^\s*function\b', Keyword, 'deffunc'),
  
              # from 'iskeyword' on version 9.4 (R2018a):
              # Check that there is no preceding dot, as keywords are valid field
              # names.
              (words(('break', 'case', 'catch', 'classdef', 'continue', 'else',
                      'elseif', 'end', 'for', 'function',
                      'global', 'if', 'otherwise', 'parfor',
                      'persistent', 'return', 'spmd', 'switch',
                      'try', 'while'),
                     prefix=r'(?<!\.)', suffix=r'\b'),
               Keyword),
  
              ("(" + "|".join(elfun + specfun + elmat) + r')\b',  Name.Builtin),
  
              # line continuation with following comment:
              (r'(\.\.\.)(.*)$', bygroups(Keyword, Comment)),
  
              # command form:
              # "How MATLAB Recognizes Command Syntax" specifies that an operator
              # is recognized if it is either surrounded by spaces or by no
              # spaces on both sides; only the former case matters for us.  (This
              # allows distinguishing `cd ./foo` from `cd ./ foo`.)
              (r'(?:^|(?<=;))(\s*)(\w+)(\s+)(?!=|\(|(?:%s)\s+)' % _operators,
               bygroups(Text, Name, Text), 'commandargs'),
  
              # operators:
              (_operators, Operator),
  
              # numbers (must come before punctuation to handle `.5`; cannot use
              # `\b` due to e.g. `5. + .5`).
              (r'(?<!\w)((\d+\.\d*)|(\d*\.\d+))([eEf][+-]?\d+)?(?!\w)', Number.Float),
              (r'\b\d+[eEf][+-]?[0-9]+\b', Number.Float),
              (r'\b\d+\b', Number.Integer),
  
              # punctuation:
              (r'\[|\]|\(|\)|\{|\}|:|@|\.|,', Punctuation),
              (r'=|:|;', Punctuation),
  
              # quote can be transpose, instead of string:
              # (not great, but handles common cases...)
              (r'(?<=[\w)\].])\'+', Operator),
  
              (r'"(""|[^"])*"', String),
  
              (r'(?<![\w)\].])\'', String, 'string'),
              (r'[a-zA-Z_]\w*', Name),
              (r'.', Text),
          ],
          'blockcomment': [
              (r'^\s*%\}', Comment.Multiline, '#pop'),
              (r'^.*\n', Comment.Multiline),
              (r'.', Comment.Multiline),
          ],
          'deffunc': [
              (r'(\s*)(?:(\S+)(\s*)(=)(\s*))?(.+)(\()(.*)(\))(\s*)',
               bygroups(Whitespace, Text, Whitespace, Punctuation,
                        Whitespace, Name.Function, Punctuation, Text,
                        Punctuation, Whitespace), '#pop'),
              # function with no args
              (r'(\s*)([a-zA-Z_]\w*)', bygroups(Text, Name.Function), '#pop'),
          ],
          'string': [
              (r"[^']*'", String, '#pop'),
          ],
          'commandargs': [
              # If an equal sign or other operator is encountered, this
              # isn't a command. It might be a variable assignment or
              # comparison operation with multiple spaces before the
              # equal sign or operator
              (r"=", Punctuation, '#pop'),
              (_operators, Operator, '#pop'),
              (r"[ \t]+", Text),
              ("'[^']*'", String),
              (r"[^';\s]+", String),
              (";", Punctuation, '#pop'),
              default('#pop'),
          ]
      }
  
      def analyse_text(text):
          # function declaration.
          first_non_comment = next((line for line in text.splitlines()
                                    if not re.match(r'^\s*%', text)), '').strip()
          if (first_non_comment.startswith('function')
                  and '{' not in first_non_comment):
              return 1.
          # comment
          elif re.search(r'^\s*%', text, re.M):
              return 0.2
          # system cmd
          elif re.search(r'^!\w+', text, re.M):
              return 0.2
  
  
  line_re  = re.compile('.*?\n')
  
  
  class MatlabSessionLexer(Lexer):
      """
      For Matlab sessions.  Modeled after PythonConsoleLexer.
      Contributed by Ken Schutte <kschutte@csail.mit.edu>.
  
      .. versionadded:: 0.10
      """
      name = 'Matlab session'
      aliases = ['matlabsession']
  
      def get_tokens_unprocessed(self, text):
          mlexer = MatlabLexer(**self.options)
  
          curcode = ''
          insertions = []
          continuation = False
  
          for match in line_re.finditer(text):
              line = match.group()
  
              if line.startswith('>> '):
                  insertions.append((len(curcode),
                                     [(0, Generic.Prompt, line[:3])]))
                  curcode += line[3:]
  
              elif line.startswith('>>'):
                  insertions.append((len(curcode),
                                     [(0, Generic.Prompt, line[:2])]))
                  curcode += line[2:]
  
              elif line.startswith('???'):
  
                  idx = len(curcode)
  
                  # without is showing error on same line as before...?
                  # line = "\n" + line
                  token = (0, Generic.Traceback, line)
                  insertions.append((idx, [token]))
              elif continuation:
                  # line_start is the length of the most recent prompt symbol
                  line_start = len(insertions[-1][-1][-1])
                  # Set leading spaces with the length of the prompt to be a generic prompt
                  # This keeps code aligned when prompts are removed, say with some Javascript
                  if line.startswith(' '*line_start):
                      insertions.append((len(curcode),
                                      [(0, Generic.Prompt, line[:line_start])]))
                      curcode += line[line_start:]
                  else:
                      curcode += line
              else:
                  if curcode:
                      yield from do_insertions(
                          insertions, mlexer.get_tokens_unprocessed(curcode))
                      curcode = ''
                      insertions = []
  
                  yield match.start(), Generic.Output, line
  
              # Does not allow continuation if a comment is included after the ellipses.
              # Continues any line that ends with ..., even comments (lines that start with %)
              if line.strip().endswith('...'):
                  continuation = True
              else:
                  continuation = False
  
          if curcode:  # or item:
              yield from do_insertions(
                  insertions, mlexer.get_tokens_unprocessed(curcode))
  
  
  class OctaveLexer(RegexLexer):
      """
      For GNU Octave source code.
  
      .. versionadded:: 1.5
      """
      name = 'Octave'
      aliases = ['octave']
      filenames = ['*.m']
      mimetypes = ['text/octave']
  
      # These lists are generated automatically.
      # Run the following in bash shell:
      #
      # First dump all of the Octave manual into a plain text file:
      #
      #   $ info octave --subnodes -o octave-manual
      #
      # Now grep through it:
  
      # for i in \
      #     "Built-in Function" "Command" "Function File" \
      #     "Loadable Function" "Mapping Function";
      # do
      #     perl -e '@name = qw('"$i"');
      #              print lc($name[0]),"_kw = [\n"';
      #
      #     perl -n -e 'print "\"$1\",\n" if /-- '"$i"': .* (\w*) \(/;' \
      #         octave-manual | sort | uniq ;
      #     echo "]" ;
      #     echo;
      # done
  
      # taken from Octave Mercurial changeset 8cc154f45e37 (30-jan-2011)
  
      builtin_kw = (
          "addlistener", "addpath", "addproperty", "all",
          "and", "any", "argnames", "argv", "assignin",
          "atexit", "autoload",
          "available_graphics_toolkits", "beep_on_error",
          "bitand", "bitmax", "bitor", "bitshift", "bitxor",
          "cat", "cell", "cellstr", "char", "class", "clc",
          "columns", "command_line_path",
          "completion_append_char", "completion_matches",
          "complex", "confirm_recursive_rmdir", "cputime",
          "crash_dumps_octave_core", "ctranspose", "cumprod",
          "cumsum", "debug_on_error", "debug_on_interrupt",
          "debug_on_warning", "default_save_options",
          "dellistener", "diag", "diff", "disp",
          "doc_cache_file", "do_string_escapes", "double",
          "drawnow", "e", "echo_executing_commands", "eps",
          "eq", "errno", "errno_list", "error", "eval",
          "evalin", "exec", "exist", "exit", "eye", "false",
          "fclear", "fclose", "fcntl", "fdisp", "feof",
          "ferror", "feval", "fflush", "fgetl", "fgets",
          "fieldnames", "file_in_loadpath", "file_in_path",
          "filemarker", "filesep", "find_dir_in_path",
          "fixed_point_format", "fnmatch", "fopen", "fork",
          "formula", "fprintf", "fputs", "fread", "freport",
          "frewind", "fscanf", "fseek", "fskipl", "ftell",
          "functions", "fwrite", "ge", "genpath", "get",
          "getegid", "getenv", "geteuid", "getgid",
          "getpgrp", "getpid", "getppid", "getuid", "glob",
          "gt", "gui_mode", "history_control",
          "history_file", "history_size",
          "history_timestamp_format_string", "home",
          "horzcat", "hypot", "ifelse",
          "ignore_function_time_stamp", "inferiorto",
          "info_file", "info_program", "inline", "input",
          "intmax", "intmin", "ipermute",
          "is_absolute_filename", "isargout", "isbool",
          "iscell", "iscellstr", "ischar", "iscomplex",
          "isempty", "isfield", "isfloat", "isglobal",
          "ishandle", "isieee", "isindex", "isinteger",
          "islogical", "ismatrix", "ismethod", "isnull",
          "isnumeric", "isobject", "isreal",
          "is_rooted_relative_filename", "issorted",
          "isstruct", "isvarname", "kbhit", "keyboard",
          "kill", "lasterr", "lasterror", "lastwarn",
          "ldivide", "le", "length", "link", "linspace",
          "logical", "lstat", "lt", "make_absolute_filename",
          "makeinfo_program", "max_recursion_depth", "merge",
          "methods", "mfilename", "minus", "mislocked",
          "mkdir", "mkfifo", "mkstemp", "mldivide", "mlock",
          "mouse_wheel_zoom", "mpower", "mrdivide", "mtimes",
          "munlock", "nargin", "nargout",
          "native_float_format", "ndims", "ne", "nfields",
          "nnz", "norm", "not", "numel", "nzmax",
          "octave_config_info", "octave_core_file_limit",
          "octave_core_file_name",
          "octave_core_file_options", "ones", "or",
          "output_max_field_width", "output_precision",
          "page_output_immediately", "page_screen_output",
          "path", "pathsep", "pause", "pclose", "permute",
          "pi", "pipe", "plus", "popen", "power",
          "print_empty_dimensions", "printf",
          "print_struct_array_contents", "prod",
          "program_invocation_name", "program_name",
          "putenv", "puts", "pwd", "quit", "rats", "rdivide",
          "readdir", "readlink", "read_readline_init_file",
          "realmax", "realmin", "rehash", "rename",
          "repelems", "re_read_readline_init_file", "reset",
          "reshape", "resize", "restoredefaultpath",
          "rethrow", "rmdir", "rmfield", "rmpath", "rows",
          "save_header_format_string", "save_precision",
          "saving_history", "scanf", "set", "setenv",
          "shell_cmd", "sighup_dumps_octave_core",
          "sigterm_dumps_octave_core", "silent_functions",
          "single", "size", "size_equal", "sizemax",
          "sizeof", "sleep", "source", "sparse_auto_mutate",
          "split_long_rows", "sprintf", "squeeze", "sscanf",
          "stat", "stderr", "stdin", "stdout", "strcmp",
          "strcmpi", "string_fill_char", "strncmp",
          "strncmpi", "struct", "struct_levels_to_print",
          "strvcat", "subsasgn", "subsref", "sum", "sumsq",
          "superiorto", "suppress_verbose_help_message",
          "symlink", "system", "tic", "tilde_expand",
          "times", "tmpfile", "tmpnam", "toc", "toupper",
          "transpose", "true", "typeinfo", "umask", "uminus",
          "uname", "undo_string_escapes", "unlink", "uplus",
          "upper", "usage", "usleep", "vec", "vectorize",
          "vertcat", "waitpid", "warning", "warranty",
          "whos_line_format", "yes_or_no", "zeros",
          "inf", "Inf", "nan", "NaN")
  
      command_kw = ("close", "load", "who", "whos")
  
      function_kw = (
          "accumarray", "accumdim", "acosd", "acotd",
          "acscd", "addtodate", "allchild", "ancestor",
          "anova", "arch_fit", "arch_rnd", "arch_test",
          "area", "arma_rnd", "arrayfun", "ascii", "asctime",
          "asecd", "asind", "assert", "atand",
          "autoreg_matrix", "autumn", "axes", "axis", "bar",
          "barh", "bartlett", "bartlett_test", "beep",
          "betacdf", "betainv", "betapdf", "betarnd",
          "bicgstab", "bicubic", "binary", "binocdf",
          "binoinv", "binopdf", "binornd", "bitcmp",
          "bitget", "bitset", "blackman", "blanks",
          "blkdiag", "bone", "box", "brighten", "calendar",
          "cast", "cauchy_cdf", "cauchy_inv", "cauchy_pdf",
          "cauchy_rnd", "caxis", "celldisp", "center", "cgs",
          "chisquare_test_homogeneity",
          "chisquare_test_independence", "circshift", "cla",
          "clabel", "clf", "clock", "cloglog", "closereq",
          "colon", "colorbar", "colormap", "colperm",
          "comet", "common_size", "commutation_matrix",
          "compan", "compare_versions", "compass",
          "computer", "cond", "condest", "contour",
          "contourc", "contourf", "contrast", "conv",
          "convhull", "cool", "copper", "copyfile", "cor",
          "corrcoef", "cor_test", "cosd", "cotd", "cov",
          "cplxpair", "cross", "cscd", "cstrcat", "csvread",
          "csvwrite", "ctime", "cumtrapz", "curl", "cut",
          "cylinder", "date", "datenum", "datestr",
          "datetick", "datevec", "dblquad", "deal",
          "deblank", "deconv", "delaunay", "delaunayn",
          "delete", "demo", "detrend", "diffpara", "diffuse",
          "dir", "discrete_cdf", "discrete_inv",
          "discrete_pdf", "discrete_rnd", "display",
          "divergence", "dlmwrite", "dos", "dsearch",
          "dsearchn", "duplication_matrix", "durbinlevinson",
          "ellipsoid", "empirical_cdf", "empirical_inv",
          "empirical_pdf", "empirical_rnd", "eomday",
          "errorbar", "etime", "etreeplot", "example",
          "expcdf", "expinv", "expm", "exppdf", "exprnd",
          "ezcontour", "ezcontourf", "ezmesh", "ezmeshc",
          "ezplot", "ezpolar", "ezsurf", "ezsurfc", "factor",
          "factorial", "fail", "fcdf", "feather", "fftconv",
          "fftfilt", "fftshift", "figure", "fileattrib",
          "fileparts", "fill", "findall", "findobj",
          "findstr", "finv", "flag", "flipdim", "fliplr",
          "flipud", "fpdf", "fplot", "fractdiff", "freqz",
          "freqz_plot", "frnd", "fsolve",
          "f_test_regression", "ftp", "fullfile", "fzero",
          "gamcdf", "gaminv", "gampdf", "gamrnd", "gca",
          "gcbf", "gcbo", "gcf", "genvarname", "geocdf",
          "geoinv", "geopdf", "geornd", "getfield", "ginput",
          "glpk", "gls", "gplot", "gradient",
          "graphics_toolkit", "gray", "grid", "griddata",
          "griddatan", "gtext", "gunzip", "gzip", "hadamard",
          "hamming", "hankel", "hanning", "hggroup",
          "hidden", "hilb", "hist", "histc", "hold", "hot",
          "hotelling_test", "housh", "hsv", "hurst",
          "hygecdf", "hygeinv", "hygepdf", "hygernd",
          "idivide", "ifftshift", "image", "imagesc",
          "imfinfo", "imread", "imshow", "imwrite", "index",
          "info", "inpolygon", "inputname", "interpft",
          "interpn", "intersect", "invhilb", "iqr", "isa",
          "isdefinite", "isdir", "is_duplicate_entry",
          "isequal", "isequalwithequalnans", "isfigure",
          "ishermitian", "ishghandle", "is_leap_year",
          "isletter", "ismac", "ismember", "ispc", "isprime",
          "isprop", "isscalar", "issquare", "isstrprop",
          "issymmetric", "isunix", "is_valid_file_id",
          "isvector", "jet", "kendall",
          "kolmogorov_smirnov_cdf",
          "kolmogorov_smirnov_test", "kruskal_wallis_test",
          "krylov", "kurtosis", "laplace_cdf", "laplace_inv",
          "laplace_pdf", "laplace_rnd", "legend", "legendre",
          "license", "line", "linkprop", "list_primes",
          "loadaudio", "loadobj", "logistic_cdf",
          "logistic_inv", "logistic_pdf", "logistic_rnd",
          "logit", "loglog", "loglogerr", "logm", "logncdf",
          "logninv", "lognpdf", "lognrnd", "logspace",
          "lookfor", "ls_command", "lsqnonneg", "magic",
          "mahalanobis", "manova", "matlabroot",
          "mcnemar_test", "mean", "meansq", "median", "menu",
          "mesh", "meshc", "meshgrid", "meshz", "mexext",
          "mget", "mkpp", "mode", "moment", "movefile",
          "mpoles", "mput", "namelengthmax", "nargchk",
          "nargoutchk", "nbincdf", "nbininv", "nbinpdf",
          "nbinrnd", "nchoosek", "ndgrid", "newplot", "news",
          "nonzeros", "normcdf", "normest", "norminv",
          "normpdf", "normrnd", "now", "nthroot", "null",
          "ocean", "ols", "onenormest", "optimget",
          "optimset", "orderfields", "orient", "orth",
          "pack", "pareto", "parseparams", "pascal", "patch",
          "pathdef", "pcg", "pchip", "pcolor", "pcr",
          "peaks", "periodogram", "perl", "perms", "pie",
          "pink", "planerot", "playaudio", "plot",
          "plotmatrix", "plotyy", "poisscdf", "poissinv",
          "poisspdf", "poissrnd", "polar", "poly",
          "polyaffine", "polyarea", "polyderiv", "polyfit",
          "polygcd", "polyint", "polyout", "polyreduce",
          "polyval", "polyvalm", "postpad", "powerset",
          "ppder", "ppint", "ppjumps", "ppplot", "ppval",
          "pqpnonneg", "prepad", "primes", "print",
          "print_usage", "prism", "probit", "qp", "qqplot",
          "quadcc", "quadgk", "quadl", "quadv", "quiver",
          "qzhess", "rainbow", "randi", "range", "rank",
          "ranks", "rat", "reallog", "realpow", "realsqrt",
          "record", "rectangle_lw", "rectangle_sw",
          "rectint", "refresh", "refreshdata",
          "regexptranslate", "repmat", "residue", "ribbon",
          "rindex", "roots", "rose", "rosser", "rotdim",
          "rref", "run", "run_count", "rundemos", "run_test",
          "runtests", "saveas", "saveaudio", "saveobj",
          "savepath", "scatter", "secd", "semilogx",
          "semilogxerr", "semilogy", "semilogyerr",
          "setaudio", "setdiff", "setfield", "setxor",
          "shading", "shift", "shiftdim", "sign_test",
          "sinc", "sind", "sinetone", "sinewave", "skewness",
          "slice", "sombrero", "sortrows", "spaugment",
          "spconvert", "spdiags", "spearman", "spectral_adf",
          "spectral_xdf", "specular", "speed", "spencer",
          "speye", "spfun", "sphere", "spinmap", "spline",
          "spones", "sprand", "sprandn", "sprandsym",
          "spring", "spstats", "spy", "sqp", "stairs",
          "statistics", "std", "stdnormal_cdf",
          "stdnormal_inv", "stdnormal_pdf", "stdnormal_rnd",
          "stem", "stft", "strcat", "strchr", "strjust",
          "strmatch", "strread", "strsplit", "strtok",
          "strtrim", "strtrunc", "structfun", "studentize",
          "subplot", "subsindex", "subspace", "substr",
          "substruct", "summer", "surf", "surface", "surfc",
          "surfl", "surfnorm", "svds", "swapbytes",
          "sylvester_matrix", "symvar", "synthesis", "table",
          "tand", "tar", "tcdf", "tempdir", "tempname",
          "test", "text", "textread", "textscan", "tinv",
          "title", "toeplitz", "tpdf", "trace", "trapz",
          "treelayout", "treeplot", "triangle_lw",
          "triangle_sw", "tril", "trimesh", "triplequad",
          "triplot", "trisurf", "triu", "trnd", "tsearchn",
          "t_test", "t_test_regression", "type", "unidcdf",
          "unidinv", "unidpdf", "unidrnd", "unifcdf",
          "unifinv", "unifpdf", "unifrnd", "union", "unique",
          "unix", "unmkpp", "unpack", "untabify", "untar",
          "unwrap", "unzip", "u_test", "validatestring",
          "vander", "var", "var_test", "vech", "ver",
          "version", "view", "voronoi", "voronoin",
          "waitforbuttonpress", "wavread", "wavwrite",
          "wblcdf", "wblinv", "wblpdf", "wblrnd", "weekday",
          "welch_test", "what", "white", "whitebg",
          "wienrnd", "wilcoxon_test", "wilkinson", "winter",
          "xlabel", "xlim", "ylabel", "yulewalker", "zip",
          "zlabel", "z_test")
  
      loadable_kw = (
          "airy", "amd", "balance", "besselh", "besseli",
          "besselj", "besselk", "bessely", "bitpack",
          "bsxfun", "builtin", "ccolamd", "cellfun",
          "cellslices", "chol", "choldelete", "cholinsert",
          "cholinv", "cholshift", "cholupdate", "colamd",
          "colloc", "convhulln", "convn", "csymamd",
          "cummax", "cummin", "daspk", "daspk_options",
          "dasrt", "dasrt_options", "dassl", "dassl_options",
          "dbclear", "dbdown", "dbstack", "dbstatus",
          "dbstop", "dbtype", "dbup", "dbwhere", "det",
          "dlmread", "dmperm", "dot", "eig", "eigs",
          "endgrent", "endpwent", "etree", "fft", "fftn",
          "fftw", "filter", "find", "full", "gcd",
          "getgrent", "getgrgid", "getgrnam", "getpwent",
          "getpwnam", "getpwuid", "getrusage", "givens",
          "gmtime", "gnuplot_binary", "hess", "ifft",
          "ifftn", "inv", "isdebugmode", "issparse", "kron",
          "localtime", "lookup", "lsode", "lsode_options",
          "lu", "luinc", "luupdate", "matrix_type", "max",
          "min", "mktime", "pinv", "qr", "qrdelete",
          "qrinsert", "qrshift", "qrupdate", "quad",
          "quad_options", "qz", "rand", "rande", "randg",
          "randn", "randp", "randperm", "rcond", "regexp",
          "regexpi", "regexprep", "schur", "setgrent",
          "setpwent", "sort", "spalloc", "sparse", "spparms",
          "sprank", "sqrtm", "strfind", "strftime",
          "strptime", "strrep", "svd", "svd_driver", "syl",
          "symamd", "symbfact", "symrcm", "time", "tsearch",
          "typecast", "urlread", "urlwrite")
  
      mapping_kw = (
          "abs", "acos", "acosh", "acot", "acoth", "acsc",
          "acsch", "angle", "arg", "asec", "asech", "asin",
          "asinh", "atan", "atanh", "beta", "betainc",
          "betaln", "bincoeff", "cbrt", "ceil", "conj", "cos",
          "cosh", "cot", "coth", "csc", "csch", "erf", "erfc",
          "erfcx", "erfinv", "exp", "finite", "fix", "floor",
          "fmod", "gamma", "gammainc", "gammaln", "imag",
          "isalnum", "isalpha", "isascii", "iscntrl",
          "isdigit", "isfinite", "isgraph", "isinf",
          "islower", "isna", "isnan", "isprint", "ispunct",
          "isspace", "isupper", "isxdigit", "lcm", "lgamma",
          "log", "lower", "mod", "real", "rem", "round",
          "roundb", "sec", "sech", "sign", "sin", "sinh",
          "sqrt", "tan", "tanh", "toascii", "tolower", "xor")
  
      builtin_consts = (
          "EDITOR", "EXEC_PATH", "I", "IMAGE_PATH", "NA",
          "OCTAVE_HOME", "OCTAVE_VERSION", "PAGER",
          "PAGER_FLAGS", "SEEK_CUR", "SEEK_END", "SEEK_SET",
          "SIG", "S_ISBLK", "S_ISCHR", "S_ISDIR", "S_ISFIFO",
          "S_ISLNK", "S_ISREG", "S_ISSOCK", "WCONTINUE",
          "WCOREDUMP", "WEXITSTATUS", "WIFCONTINUED",
          "WIFEXITED", "WIFSIGNALED", "WIFSTOPPED", "WNOHANG",
          "WSTOPSIG", "WTERMSIG", "WUNTRACED")
  
      tokens = {
          'root': [
              # We should look into multiline comments
              (r'[%#].*$', Comment),
              (r'^\s*function\b', Keyword, 'deffunc'),
  
              # from 'iskeyword' on hg changeset 8cc154f45e37
              (words((
                  '__FILE__', '__LINE__', 'break', 'case', 'catch', 'classdef', 'continue', 'do', 'else',
                  'elseif', 'end', 'end_try_catch', 'end_unwind_protect', 'endclassdef',
                  'endevents', 'endfor', 'endfunction', 'endif', 'endmethods', 'endproperties',
                  'endswitch', 'endwhile', 'events', 'for', 'function', 'get', 'global', 'if', 'methods',
                  'otherwise', 'persistent', 'properties', 'return', 'set', 'static', 'switch', 'try',
                  'until', 'unwind_protect', 'unwind_protect_cleanup', 'while'), suffix=r'\b'),
               Keyword),
  
              (words(builtin_kw + command_kw + function_kw + loadable_kw + mapping_kw,
                     suffix=r'\b'),  Name.Builtin),
  
              (words(builtin_consts, suffix=r'\b'), Name.Constant),
  
              # operators in Octave but not Matlab:
              (r'-=|!=|!|/=|--', Operator),
              # operators:
              (r'-|==|~=|<|>|<=|>=|&&|&|~|\|\|?', Operator),
              # operators in Octave but not Matlab requiring escape for re:
              (r'\*=|\+=|\^=|\/=|\\=|\*\*|\+\+|\.\*\*', Operator),
              # operators requiring escape for re:
              (r'\.\*|\*|\+|\.\^|\.\\|\.\/|\/|\\', Operator),
  
  
              # punctuation:
              (r'[\[\](){}:@.,]', Punctuation),
              (r'=|:|;', Punctuation),
  
              (r'"[^"]*"', String),
  
              (r'(\d+\.\d*|\d*\.\d+)([eEf][+-]?[0-9]+)?', Number.Float),
              (r'\d+[eEf][+-]?[0-9]+', Number.Float),
              (r'\d+', Number.Integer),
  
              # quote can be transpose, instead of string:
              # (not great, but handles common cases...)
              (r'(?<=[\w)\].])\'+', Operator),
              (r'(?<![\w)\].])\'', String, 'string'),
  
              (r'[a-zA-Z_]\w*', Name),
              (r'.', Text),
          ],
          'string': [
              (r"[^']*'", String, '#pop'),
          ],
          'deffunc': [
              (r'(\s*)(?:(\S+)(\s*)(=)(\s*))?(.+)(\()(.*)(\))(\s*)',
               bygroups(Whitespace, Text, Whitespace, Punctuation,
                        Whitespace, Name.Function, Punctuation, Text,
                        Punctuation, Whitespace), '#pop'),
              # function with no args
              (r'(\s*)([a-zA-Z_]\w*)', bygroups(Text, Name.Function), '#pop'),
          ],
      }
  
      def analyse_text(text):
          """Octave is quite hard to spot, and it looks like Matlab as well."""
          return 0
  
  
  class ScilabLexer(RegexLexer):
      """
      For Scilab source code.
  
      .. versionadded:: 1.5
      """
      name = 'Scilab'
      aliases = ['scilab']
      filenames = ['*.sci', '*.sce', '*.tst']
      mimetypes = ['text/scilab']
  
      tokens = {
          'root': [
              (r'//.*?$', Comment.Single),
              (r'^\s*function\b', Keyword, 'deffunc'),
  
              (words((
                  '__FILE__', '__LINE__', 'break', 'case', 'catch', 'classdef', 'continue', 'do', 'else',
                  'elseif', 'end', 'end_try_catch', 'end_unwind_protect', 'endclassdef',
                  'endevents', 'endfor', 'endfunction', 'endif', 'endmethods', 'endproperties',
                  'endswitch', 'endwhile', 'events', 'for', 'function', 'get', 'global', 'if', 'methods',
                  'otherwise', 'persistent', 'properties', 'return', 'set', 'static', 'switch', 'try',
                  'until', 'unwind_protect', 'unwind_protect_cleanup', 'while'), suffix=r'\b'),
               Keyword),
  
              (words(_scilab_builtins.functions_kw +
                     _scilab_builtins.commands_kw +
                     _scilab_builtins.macros_kw, suffix=r'\b'), Name.Builtin),
  
              (words(_scilab_builtins.variables_kw, suffix=r'\b'), Name.Constant),
  
              # operators:
              (r'-|==|~=|<|>|<=|>=|&&|&|~|\|\|?', Operator),
              # operators requiring escape for re:
              (r'\.\*|\*|\+|\.\^|\.\\|\.\/|\/|\\', Operator),
  
              # punctuation:
              (r'[\[\](){}@.,=:;]', Punctuation),
  
              (r'"[^"]*"', String),
  
              # quote can be transpose, instead of string:
              # (not great, but handles common cases...)
              (r'(?<=[\w)\].])\'+', Operator),
              (r'(?<![\w)\].])\'', String, 'string'),
  
              (r'(\d+\.\d*|\d*\.\d+)([eEf][+-]?[0-9]+)?', Number.Float),
              (r'\d+[eEf][+-]?[0-9]+', Number.Float),
              (r'\d+', Number.Integer),
  
              (r'[a-zA-Z_]\w*', Name),
              (r'.', Text),
          ],
          'string': [
              (r"[^']*'", String, '#pop'),
              (r'.', String, '#pop'),
          ],
          'deffunc': [
              (r'(\s*)(?:(\S+)(\s*)(=)(\s*))?(.+)(\()(.*)(\))(\s*)',
               bygroups(Whitespace, Text, Whitespace, Punctuation,
                        Whitespace, Name.Function, Punctuation, Text,
                        Punctuation, Whitespace), '#pop'),
              # function with no args
              (r'(\s*)([a-zA-Z_]\w*)', bygroups(Text, Name.Function), '#pop'),
          ],
      }
  