The grand language renaming bonanza (#3278)

* Removing FORTRAN samples because OS X case-insensitive filesystems :-\

* Adding Fotran samples back

* FORTRAN -> Fortran

* Groff -> Roff

* GAS -> Unix Assembly

* Cucumber -> Gherkin

* Nimrod -> Nim

* Ragel in Ruby Host -> Ragel

* Jade -> Pug

* VimL -> Vim script

samples/Ragel/ephemeris_parser.rl

@@ -0,0 +1,96 @@
+=begin
+%%{
+
+  machine ephemeris_parser;
+
+  action mark { mark = p }
+
+  action parse_start_time {
+    parser.start_time = data[mark..p].pack('c*')
+  }
+
+  action parse_stop_time {
+    parser.stop_time = data[mark..p].pack('c*')
+  }
+
+  action parse_step_size {
+    parser.step_size = data[mark..p].pack('c*')
+  }
+
+  action parse_ephemeris_table {
+    fhold;
+    parser.ephemeris_table = data[mark..p].pack('c*')
+  }
+
+  ws = [ \t\r\n];
+
+  adbc = ('A.D.'|'B.C.');
+  year = digit{4};
+  month = upper lower{2};
+  date = digit{2};
+  hours =  digit{2};
+  minutes = digit{2};
+  seconds = digit{2} '.' digit{4};
+  tz = 'UT';
+  datetime = adbc ' ' year '-' month '-' date ' ' hours ':' minutes ':' seconds ' ' tz;
+
+  time_unit = ('minute' [s]? | 'calendar year' [s]?);
+
+  soe = '$$SOE' '\n';
+  eoe = '$$EOE' '\n';
+  ephemeris_table = (alnum | ws | [*-./:])*;
+
+  start_time = 'Start time' ' '* ':' ' ' datetime >mark %parse_start_time space* '\n';
+  stop_time  = 'Stop  time' ' '* ':' ' ' datetime >mark %parse_stop_time space* '\n';
+  step_size  = 'Step-size' ' '* ':' ' ' (digit+ ' '* time_unit) >mark $parse_step_size '\n';
+
+  ephemeris = soe ephemeris_table >mark %parse_ephemeris_table eoe;
+
+  main := (
+    any*
+    start_time
+    stop_time
+    step_size
+    any*
+    ephemeris
+    any*
+  );
+
+}%%
+=end
+
+require 'date'
+
+module Tengai
+  EPHEMERIS_DATA = Struct.new(:start_time, :stop_time, :step_size, :ephemeris_table).freeze
+
+  class EphemerisParser < EPHEMERIS_DATA
+    def self.parse(data)
+      parser = new
+      data = data.unpack('c*') if data.is_a? String
+      eof = data.length
+
+      %% write init;
+      %% write exec;
+
+      parser
+    end
+
+    def start_time=(time)
+      super parse_time(time)
+    end
+
+    def stop_time=(time)
+      super parse_time(time)
+    end
+
+    %% write data;
+
+    # % fix syntax highlighting
+
+    private
+    def parse_time(time)
+      DateTime.parse(time)
+    end
+  end
+end