Custom gherkin dialect

make_it_work.rb

require 'gherkin/gherkin'
require 'gherkin/dialect'

test_dialects = JSON.parse(File.open('test_languages.json', 'r:UTF-8').read)
Gherkin::DIALECTS.merge!(test_dialects)

source_text = File.read('something_to_parse.feature')
result = Gherkin::Gherkin.from_source('junk_file_name', source_text, {default_dialect: 'cm-test'}).to_a

puts "messages returned: #{result.count}"
puts "messages: #{result}"

something_to_parse.feature

# feature comment
                       @tag1 @tag2 @tag3
                       CM-Feature: A feature with everything it could have

                       Including a description
                       and then some.

                         # background comment
                         CM-Background:

                         Background
                         description

                           CM-* a step
                           # table comment
                             | value1 |
                           # table row comment
                             | value2 |
                           CM-* another step

                         # scenario comment
                         @scenario_tag
                         CM-Scenario:

                         Scenario
                         description

                           CM-* a step
                           CM-* another step
                             """
                             some text
                             """

                         # outline comment
                         @outline_tag
                         CM-Scenario Outline:

                         Outline
                         description

                           # step comment
                           CM-* a step
                           # table comment
                             | value2 |
                           # step comment
                           CM-* another step
                           # doc string comment
                             """
                             some text
                             """

                         # example comment
                         @example_tag
                         CM-Examples:

                         Example
                         description

                           # row comment
                           | param |
                           | value |
                       # final comment

test_languages.json

{
  "cm-test": {
    "and": [
      "CM-* ",
      "CM-And "
    ],
    "background": [
      "CM-Background"
    ],
    "but": [
      "CM-* ",
      "CM-But "
    ],
    "examples": [
      "CM-Examples",
      "CM-Scenarios"
    ],
    "feature": [
      "CM-Feature",
      "CM-Business Need",
      "CM-Ability"
    ],
    "given": [
      "CM-* ",
      "CM-Given "
    ],
    "name": "CukeModeler Test Language",
    "native": "CMT",
    "scenario": [
      "CM-Scenario"
    ],
    "scenarioOutline": [
      "CM-Scenario Outline",
      "CM-Scenario Template"
    ],
    "then": [
      "CM-* ",
      "CM-Then "
    ],
    "when": [
      "CM-* ",
      "CM-When "
    ]
  }
}