hunk.code_window: 				baseCss,
   				baseManifestJson,
   				"",
   				baseRootHtml,
   				baseCss,
   				baseManifestJson,
   			},
  
hunk.labels: keep keep add keep keep keep keep
hunk.after_edit: 				nil,
  
hunk.file_path: utils/subpath_test.go
hunk.type: add
file: package yaml
  
  import (
  	"bytes"
  	"fmt"
  )
  
  // Flush the buffer if needed.
  func flush(emitter *yaml_emitter_t) bool {
  	if emitter.buffer_pos+5 >= len(emitter.buffer) {
  		return yaml_emitter_flush(emitter)
  	}
  	return true
  }
  
  // Put a character to the output buffer.
  func put(emitter *yaml_emitter_t, value byte) bool {
  	if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) {
  		return false
  	}
  	emitter.buffer[emitter.buffer_pos] = value
  	emitter.buffer_pos++
  	emitter.column++
  	return true
  }
  
  // Put a line break to the output buffer.
  func put_break(emitter *yaml_emitter_t) bool {
  	if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) {
  		return false
  	}
  	switch emitter.line_break {
  	case yaml_CR_BREAK:
  		emitter.buffer[emitter.buffer_pos] = '\r'
  		emitter.buffer_pos += 1
  	case yaml_LN_BREAK:
  		emitter.buffer[emitter.buffer_pos] = '\n'
  		emitter.buffer_pos += 1
  	case yaml_CRLN_BREAK:
  		emitter.buffer[emitter.buffer_pos+0] = '\r'
  		emitter.buffer[emitter.buffer_pos+1] = '\n'
  		emitter.buffer_pos += 2
  	default:
  		panic("unknown line break setting")
  	}
  	emitter.column = 0
  	emitter.line++
  	return true
  }
  
  // Copy a character from a string into buffer.
  func write(emitter *yaml_emitter_t, s []byte, i *int) bool {
  	if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) {
  		return false
  	}
  	p := emitter.buffer_pos
  	w := width(s[*i])
  	switch w {
  	case 4:
  		emitter.buffer[p+3] = s[*i+3]
  		fallthrough
  	case 3:
  		emitter.buffer[p+2] = s[*i+2]
  		fallthrough
  	case 2:
  		emitter.buffer[p+1] = s[*i+1]
  		fallthrough
  	case 1:
  		emitter.buffer[p+0] = s[*i+0]
  	default:
  		panic("unknown character width")
  	}
  	emitter.column++
  	emitter.buffer_pos += w
  	*i += w
  	return true
  }
  
  // Write a whole string into buffer.
  func write_all(emitter *yaml_emitter_t, s []byte) bool {
  	for i := 0; i < len(s); {
  		if !write(emitter, s, &i) {
  			return false
  		}
  	}
  	return true
  }
  
  // Copy a line break character from a string into buffer.
  func write_break(emitter *yaml_emitter_t, s []byte, i *int) bool {
  	if s[*i] == '\n' {
  		if !put_break(emitter) {
  			return false
  		}
  		*i++
  	} else {
  		if !write(emitter, s, i) {
  			return false
  		}
  		emitter.column = 0
  		emitter.line++
  	}
  	return true
  }
  
  // Set an emitter error and return false.
  func yaml_emitter_set_emitter_error(emitter *yaml_emitter_t, problem string) bool {
  	emitter.error = yaml_EMITTER_ERROR
  	emitter.problem = problem
  	return false
  }
  
  // Emit an event.
  func yaml_emitter_emit(emitter *yaml_emitter_t, event *yaml_event_t) bool {
  	emitter.events = append(emitter.events, *event)
  	for !yaml_emitter_need_more_events(emitter) {
  		event := &emitter.events[emitter.events_head]
  		if !yaml_emitter_analyze_event(emitter, event) {
  			return false
  		}
  		if !yaml_emitter_state_machine(emitter, event) {
  			return false
  		}
  		yaml_event_delete(event)
  		emitter.events_head++
  	}
  	return true
  }
  
  // Check if we need to accumulate more events before emitting.
  //
  // We accumulate extra
  //  - 1 event for DOCUMENT-START
  //  - 2 events for SEQUENCE-START
  //  - 3 events for MAPPING-START
  //
  func yaml_emitter_need_more_events(emitter *yaml_emitter_t) bool {
  	if emitter.events_head == len(emitter.events) {
  		return true
  	}
  	var accumulate int
  	switch emitter.events[emitter.events_head].typ {
  	case yaml_DOCUMENT_START_EVENT:
  		accumulate = 1
  		break
  	case yaml_SEQUENCE_START_EVENT:
  		accumulate = 2
  		break
  	case yaml_MAPPING_START_EVENT:
  		accumulate = 3
  		break
  	default:
  		return false
  	}
  	if len(emitter.events)-emitter.events_head > accumulate {
  		return false
  	}
  	var level int
  	for i := emitter.events_head; i < len(emitter.events); i++ {
  		switch emitter.events[i].typ {
  		case yaml_STREAM_START_EVENT, yaml_DOCUMENT_START_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT:
  			level++
  		case yaml_STREAM_END_EVENT, yaml_DOCUMENT_END_EVENT, yaml_SEQUENCE_END_EVENT, yaml_MAPPING_END_EVENT:
  			level--
  		}
  		if level == 0 {
  			return false
  		}
  	}
  	return true
  }
  
  // Append a directive to the directives stack.
  func yaml_emitter_append_tag_directive(emitter *yaml_emitter_t, value *yaml_tag_directive_t, allow_duplicates bool) bool {
  	for i := 0; i < len(emitter.tag_directives); i++ {
  		if bytes.Equal(value.handle, emitter.tag_directives[i].handle) {
  			if allow_duplicates {
  				return true
  			}
  			return yaml_emitter_set_emitter_error(emitter, "duplicate %TAG directive")
  		}
  	}
  
  	// [Go] Do we actually need to copy this given garbage collection
  	// and the lack of deallocating destructors?
  	tag_copy := yaml_tag_directive_t{
  		handle: make([]byte, len(value.handle)),
  		prefix: make([]byte, len(value.prefix)),
  	}
  	copy(tag_copy.handle, value.handle)
  	copy(tag_copy.prefix, value.prefix)
  	emitter.tag_directives = append(emitter.tag_directives, tag_copy)
  	return true
  }
  
  // Increase the indentation level.
  func yaml_emitter_increase_indent(emitter *yaml_emitter_t, flow, indentless bool) bool {
  	emitter.indents = append(emitter.indents, emitter.indent)
  	if emitter.indent < 0 {
  		if flow {
  			emitter.indent = emitter.best_indent
  		} else {
  			emitter.indent = 0
  		}
  	} else if !indentless {
  		emitter.indent += emitter.best_indent
  	}
  	return true
  }
  
  // State dispatcher.
  func yaml_emitter_state_machine(emitter *yaml_emitter_t, event *yaml_event_t) bool {
  	switch emitter.state {
  	default:
  	case yaml_EMIT_STREAM_START_STATE:
  		return yaml_emitter_emit_stream_start(emitter, event)
  
  	case yaml_EMIT_FIRST_DOCUMENT_START_STATE:
  		return yaml_emitter_emit_document_start(emitter, event, true)
  
  	case yaml_EMIT_DOCUMENT_START_STATE:
  		return yaml_emitter_emit_document_start(emitter, event, false)
  
  	case yaml_EMIT_DOCUMENT_CONTENT_STATE:
  		return yaml_emitter_emit_document_content(emitter, event)
  
  	case yaml_EMIT_DOCUMENT_END_STATE:
  		return yaml_emitter_emit_document_end(emitter, event)
  
  	case yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE:
  		return yaml_emitter_emit_flow_sequence_item(emitter, event, true)
  
  	case yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE:
  		return yaml_emitter_emit_flow_sequence_item(emitter, event, false)
  
  	case yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE:
  		return yaml_emitter_emit_flow_mapping_key(emitter, event, true)
  
  	case yaml_EMIT_FLOW_MAPPING_KEY_STATE:
  		return yaml_emitter_emit_flow_mapping_key(emitter, event, false)
  
  	case yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE:
  		return yaml_emitter_emit_flow_mapping_value(emitter, event, true)
  
  	case yaml_EMIT_FLOW_MAPPING_VALUE_STATE:
  		return yaml_emitter_emit_flow_mapping_value(emitter, event, false)
  
  	case yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE:
  		return yaml_emitter_emit_block_sequence_item(emitter, event, true)
  
  	case yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE:
  		return yaml_emitter_emit_block_sequence_item(emitter, event, false)
  
  	case yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE:
  		return yaml_emitter_emit_block_mapping_key(emitter, event, true)
  
  	case yaml_EMIT_BLOCK_MAPPING_KEY_STATE:
  		return yaml_emitter_emit_block_mapping_key(emitter, event, false)
  
  	case yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE:
  		return yaml_emitter_emit_block_mapping_value(emitter, event, true)
  
  	case yaml_EMIT_BLOCK_MAPPING_VALUE_STATE:
  		return yaml_emitter_emit_block_mapping_value(emitter, event, false)
  
  	case yaml_EMIT_END_STATE:
  		return yaml_emitter_set_emitter_error(emitter, "expected nothing after STREAM-END")
  	}
  	panic("invalid emitter state")
  }
  
  // Expect STREAM-START.
  func yaml_emitter_emit_stream_start(emitter *yaml_emitter_t, event *yaml_event_t) bool {
  	if event.typ != yaml_STREAM_START_EVENT {
  		return yaml_emitter_set_emitter_error(emitter, "expected STREAM-START")
  	}
  	if emitter.encoding == yaml_ANY_ENCODING {
  		emitter.encoding = event.encoding
  		if emitter.encoding == yaml_ANY_ENCODING {
  			emitter.encoding = yaml_UTF8_ENCODING
  		}
  	}
  	if emitter.best_indent < 2 || emitter.best_indent > 9 {
  		emitter.best_indent = 2
  	}
  	if emitter.best_width >= 0 && emitter.best_width <= emitter.best_indent*2 {
  		emitter.best_width = 80
  	}
  	if emitter.best_width < 0 {
  		emitter.best_width = 1<<31 - 1
  	}
  	if emitter.line_break == yaml_ANY_BREAK {
  		emitter.line_break = yaml_LN_BREAK
  	}
  
  	emitter.indent = -1
  	emitter.line = 0
  	emitter.column = 0
  	emitter.whitespace = true
  	emitter.indention = true
  
  	if emitter.encoding != yaml_UTF8_ENCODING {
  		if !yaml_emitter_write_bom(emitter) {
  			return false
  		}
  	}
  	emitter.state = yaml_EMIT_FIRST_DOCUMENT_START_STATE
  	return true
  }
  
  // Expect DOCUMENT-START or STREAM-END.
  func yaml_emitter_emit_document_start(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
  
  	if event.typ == yaml_DOCUMENT_START_EVENT {
  
  		if event.version_directive != nil {
  			if !yaml_emitter_analyze_version_directive(emitter, event.version_directive) {
  				return false
  			}
  		}
  
  		for i := 0; i < len(event.tag_directives); i++ {
  			tag_directive := &event.tag_directives[i]
  			if !yaml_emitter_analyze_tag_directive(emitter, tag_directive) {
  				return false
  			}
  			if !yaml_emitter_append_tag_directive(emitter, tag_directive, false) {
  				return false
  			}
  		}
  
  		for i := 0; i < len(default_tag_directives); i++ {
  			tag_directive := &default_tag_directives[i]
  			if !yaml_emitter_append_tag_directive(emitter, tag_directive, true) {
  				return false
  			}
  		}
  
  		implicit := event.implicit
  		if !first || emitter.canonical {
  			implicit = false
  		}
  
  		if emitter.open_ended && (event.version_directive != nil || len(event.tag_directives) > 0) {
  			if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) {
  				return false
  			}
  			if !yaml_emitter_write_indent(emitter) {
  				return false
  			}
  		}
  
  		if event.version_directive != nil {
  			implicit = false
  			if !yaml_emitter_write_indicator(emitter, []byte("%YAML"), true, false, false) {
  				return false
  			}
  			if !yaml_emitter_write_indicator(emitter, []byte("1.1"), true, false, false) {
  				return false
  			}
  			if !yaml_emitter_write_indent(emitter) {
  				return false
  			}
  		}
  
  		if len(event.tag_directives) > 0 {
  			implicit = false
  			for i := 0; i < len(event.tag_directives); i++ {
  				tag_directive := &event.tag_directives[i]
  				if !yaml_emitter_write_indicator(emitter, []byte("%TAG"), true, false, false) {
  					return false
  				}
  				if !yaml_emitter_write_tag_handle(emitter, tag_directive.handle) {
  					return false
  				}
  				if !yaml_emitter_write_tag_content(emitter, tag_directive.prefix, true) {
  					return false
  				}
  				if !yaml_emitter_write_indent(emitter) {
  					return false
  				}
  			}
  		}
  
  		if yaml_emitter_check_empty_document(emitter) {
  			implicit = false
  		}
  		if !implicit {
  			if !yaml_emitter_write_indent(emitter) {
  				return false
  			}
  			if !yaml_emitter_write_indicator(emitter, []byte("---"), true, false, false) {
  				return false
  			}
  			if emitter.canonical {
  				if !yaml_emitter_write_indent(emitter) {
  					return false
  				}
  			}
  		}
  
  		emitter.state = yaml_EMIT_DOCUMENT_CONTENT_STATE
  		return true
  	}
  
  	if event.typ == yaml_STREAM_END_EVENT {
  		if emitter.open_ended {
  			if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) {
  				return false
  			}
  			if !yaml_emitter_write_indent(emitter) {
  				return false
  			}
  		}
  		if !yaml_emitter_flush(emitter) {
  			return false
  		}
  		emitter.state = yaml_EMIT_END_STATE
  		return true
  	}
  
  	return yaml_emitter_set_emitter_error(emitter, "expected DOCUMENT-START or STREAM-END")
  }
  
  // Expect the root node.
  func yaml_emitter_emit_document_content(emitter *yaml_emitter_t, event *yaml_event_t) bool {
  	emitter.states = append(emitter.states, yaml_EMIT_DOCUMENT_END_STATE)
  	return yaml_emitter_emit_node(emitter, event, true, false, false, false)
  }
  
  // Expect DOCUMENT-END.
  func yaml_emitter_emit_document_end(emitter *yaml_emitter_t, event *yaml_event_t) bool {
  	if event.typ != yaml_DOCUMENT_END_EVENT {
  		return yaml_emitter_set_emitter_error(emitter, "expected DOCUMENT-END")
  	}
  	if !yaml_emitter_write_indent(emitter) {
  		return false
  	}
  	if !event.implicit {
  		// [Go] Allocate the slice elsewhere.
  		if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) {
  			return false
  		}
  		if !yaml_emitter_write_indent(emitter) {
  			return false
  		}
  	}
  	if !yaml_emitter_flush(emitter) {
  		return false
  	}
  	emitter.state = yaml_EMIT_DOCUMENT_START_STATE
  	emitter.tag_directives = emitter.tag_directives[:0]
  	return true
  }
  
  // Expect a flow item node.
  func yaml_emitter_emit_flow_sequence_item(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
  	if first {
  		if !yaml_emitter_write_indicator(emitter, []byte{'['}, true, true, false) {
  			return false
  		}
  		if !yaml_emitter_increase_indent(emitter, true, false) {
  			return false
  		}
  		emitter.flow_level++
  	}
  
  	if event.typ == yaml_SEQUENCE_END_EVENT {
  		emitter.flow_level--
  		emitter.indent = emitter.indents[len(emitter.indents)-1]
  		emitter.indents = emitter.indents[:len(emitter.indents)-1]
  		if emitter.canonical && !first {
  			if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
  				return false
  			}
  			if !yaml_emitter_write_indent(emitter) {
  				return false
  			}
  		}
  		if !yaml_emitter_write_indicator(emitter, []byte{']'}, false, false, false) {
  			return false
  		}
  		emitter.state = emitter.states[len(emitter.states)-1]
  		emitter.states = emitter.states[:len(emitter.states)-1]
  
  		return true
  	}
  
  	if !first {
  		if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
  			return false
  		}
  	}
  
  	if emitter.canonical || emitter.column > emitter.best_width {
  		if !yaml_emitter_write_indent(emitter) {
  			return false
  		}
  	}
  	emitter.states = append(emitter.states, yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE)
  	return yaml_emitter_emit_node(emitter, event, false, true, false, false)
  }
  
  // Expect a flow key node.
  func yaml_emitter_emit_flow_mapping_key(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
  	if first {
  		if !yaml_emitter_write_indicator(emitter, []byte{'{'}, true, true, false) {
  			return false
  		}
  		if !yaml_emitter_increase_indent(emitter, true, false) {
  			return false
  		}
  		emitter.flow_level++
  	}
  
  	if event.typ == yaml_MAPPING_END_EVENT {
  		emitter.flow_level--
  		emitter.indent = emitter.indents[len(emitter.indents)-1]
  		emitter.indents = emitter.indents[:len(emitter.indents)-1]
  		if emitter.canonical && !first {
  			if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
  				return false
  			}
  			if !yaml_emitter_write_indent(emitter) {
  				return false
  			}
  		}
  		if !yaml_emitter_write_indicator(emitter, []byte{'}'}, false, false, false) {
  			return false
  		}
  		emitter.state = emitter.states[len(emitter.states)-1]
  		emitter.states = emitter.states[:len(emitter.states)-1]
  		return true
  	}
  
  	if !first {
  		if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
  			return false
  		}
  	}
  	if emitter.canonical || emitter.column > emitter.best_width {
  		if !yaml_emitter_write_indent(emitter) {
  			return false
  		}
  	}
  
  	if !emitter.canonical && yaml_emitter_check_simple_key(emitter) {
  		emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE)
  		return yaml_emitter_emit_node(emitter, event, false, false, true, true)
  	}
  	if !yaml_emitter_write_indicator(emitter, []byte{'?'}, true, false, false) {
  		return false
  	}
  	emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_VALUE_STATE)
  	return yaml_emitter_emit_node(emitter, event, false, false, true, false)
  }
  
  // Expect a flow value node.
  func yaml_emitter_emit_flow_mapping_value(emitter *yaml_emitter_t, event *yaml_event_t, simple bool) bool {
  	if simple {
  		if !yaml_emitter_write_indicator(emitter, []byte{':'}, false, false, false) {
  			return false
  		}
  	} else {
  		if emitter.canonical || emitter.column > emitter.best_width {
  			if !yaml_emitter_write_indent(emitter) {
  				return false
  			}
  		}
  		if !yaml_emitter_write_indicator(emitter, []byte{':'}, true, false, false) {
  			return false
  		}
  	}
  	emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_KEY_STATE)
  	return yaml_emitter_emit_node(emitter, event, false, false, true, false)
  }
  
  // Expect a block item node.
  func yaml_emitter_emit_block_sequence_item(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
  	if first {
  		if !yaml_emitter_increase_indent(emitter, false, emitter.mapping_context && !emitter.indention) {
  			return false
  		}
  	}
  	if event.typ == yaml_SEQUENCE_END_EVENT {
  		emitter.indent = emitter.indents[len(emitter.indents)-1]
  		emitter.indents = emitter.indents[:len(emitter.indents)-1]
  		emitter.state = emitter.states[len(emitter.states)-1]
  		emitter.states = emitter.states[:len(emitter.states)-1]
  		return true
  	}
  	if !yaml_emitter_write_indent(emitter) {
  		return false
  	}
  	if !yaml_emitter_write_indicator(emitter, []byte{'-'}, true, false, true) {
  		return false
  	}
  	emitter.states = append(emitter.states, yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE)
  	return yaml_emitter_emit_node(emitter, event, false, true, false, false)
  }
  
  // Expect a block key node.
  func yaml_emitter_emit_block_mapping_key(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
  	if first {
  		if !yaml_emitter_increase_indent(emitter, false, false) {
  			return false
  		}
  	}
  	if event.typ == yaml_MAPPING_END_EVENT {
  		emitter.indent = emitter.indents[len(emitter.indents)-1]
  		emitter.indents = emitter.indents[:len(emitter.indents)-1]
  		emitter.state = emitter.states[len(emitter.states)-1]
  		emitter.states = emitter.states[:len(emitter.states)-1]
  		return true
  	}
  	if !yaml_emitter_write_indent(emitter) {
  		return false
  	}
  	if yaml_emitter_check_simple_key(emitter) {
  		emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE)
  		return yaml_emitter_emit_node(emitter, event, false, false, true, true)
  	}
  	if !yaml_emitter_write_indicator(emitter, []byte{'?'}, true, false, true) {
  		return false
  	}
  	emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_VALUE_STATE)
  	return yaml_emitter_emit_node(emitter, event, false, false, true, false)
  }
  
  // Expect a block value node.
  func yaml_emitter_emit_block_mapping_value(emitter *yaml_emitter_t, event *yaml_event_t, simple bool) bool {
  	if simple {
  		if !yaml_emitter_write_indicator(emitter, []byte{':'}, false, false, false) {
  			return false
  		}
  	} else {
  		if !yaml_emitter_write_indent(emitter) {
  			return false
  		}
  		if !yaml_emitter_write_indicator(emitter, []byte{':'}, true, false, true) {
  			return false
  		}
  	}
  	emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_KEY_STATE)
  	return yaml_emitter_emit_node(emitter, event, false, false, true, false)
  }
  
  // Expect a node.
  func yaml_emitter_emit_node(emitter *yaml_emitter_t, event *yaml_event_t,
  	root bool, sequence bool, mapping bool, simple_key bool) bool {
  
  	emitter.root_context = root
  	emitter.sequence_context = sequence
  	emitter.mapping_context = mapping
  	emitter.simple_key_context = simple_key
  
  	switch event.typ {
  	case yaml_ALIAS_EVENT:
  		return yaml_emitter_emit_alias(emitter, event)
  	case yaml_SCALAR_EVENT:
  		return yaml_emitter_emit_scalar(emitter, event)
  	case yaml_SEQUENCE_START_EVENT:
  		return yaml_emitter_emit_sequence_start(emitter, event)
  	case yaml_MAPPING_START_EVENT:
  		return yaml_emitter_emit_mapping_start(emitter, event)
  	default:
  		return yaml_emitter_set_emitter_error(emitter,
  			fmt.Sprintf("expected SCALAR, SEQUENCE-START, MAPPING-START, or ALIAS, but got %v", event.typ))
  	}
  }
  
  // Expect ALIAS.
  func yaml_emitter_emit_alias(emitter *yaml_emitter_t, event *yaml_event_t) bool {
  	if !yaml_emitter_process_anchor(emitter) {
  		return false
  	}
  	emitter.state = emitter.states[len(emitter.states)-1]
  	emitter.states = emitter.states[:len(emitter.states)-1]
  	return true
  }
  
  // Expect SCALAR.
  func yaml_emitter_emit_scalar(emitter *yaml_emitter_t, event *yaml_event_t) bool {
  	if !yaml_emitter_select_scalar_style(emitter, event) {
  		return false
  	}
  	if !yaml_emitter_process_anchor(emitter) {
  		return false
  	}
  	if !yaml_emitter_process_tag(emitter) {
  		return false
  	}
  	if !yaml_emitter_increase_indent(emitter, true, false) {
  		return false
  	}
  	if !yaml_emitter_process_scalar(emitter) {
  		return false
  	}
  	emitter.indent = emitter.indents[len(emitter.indents)-1]
  	emitter.indents = emitter.indents[:len(emitter.indents)-1]
  	emitter.state = emitter.states[len(emitter.states)-1]
  	emitter.states = emitter.states[:len(emitter.states)-1]
  	return true
  }
  
  // Expect SEQUENCE-START.
  func yaml_emitter_emit_sequence_start(emitter *yaml_emitter_t, event *yaml_event_t) bool {
  	if !yaml_emitter_process_anchor(emitter) {
  		return false
  	}
  	if !yaml_emitter_process_tag(emitter) {
  		return false
  	}
  	if emitter.flow_level > 0 || emitter.canonical || event.sequence_style() == yaml_FLOW_SEQUENCE_STYLE ||
  		yaml_emitter_check_empty_sequence(emitter) {
  		emitter.state = yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE
  	} else {
  		emitter.state = yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE
  	}
  	return true
  }
  
  // Expect MAPPING-START.
  func yaml_emitter_emit_mapping_start(emitter *yaml_emitter_t, event *yaml_event_t) bool {
  	if !yaml_emitter_process_anchor(emitter) {
  		return false
  	}
  	if !yaml_emitter_process_tag(emitter) {
  		return false
  	}
  	if emitter.flow_level > 0 || emitter.canonical || event.mapping_style() == yaml_FLOW_MAPPING_STYLE ||
  		yaml_emitter_check_empty_mapping(emitter) {
  		emitter.state = yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE
  	} else {
  		emitter.state = yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE
  	}
  	return true
  }
  
  // Check if the document content is an empty scalar.
  func yaml_emitter_check_empty_document(emitter *yaml_emitter_t) bool {
  	return false // [Go] Huh?
  }
  
  // Check if the next events represent an empty sequence.
  func yaml_emitter_check_empty_sequence(emitter *yaml_emitter_t) bool {
  	if len(emitter.events)-emitter.events_head < 2 {
  		return false
  	}
  	return emitter.events[emitter.events_head].typ == yaml_SEQUENCE_START_EVENT &&
  		emitter.events[emitter.events_head+1].typ == yaml_SEQUENCE_END_EVENT
  }
  
  // Check if the next events represent an empty mapping.
  func yaml_emitter_check_empty_mapping(emitter *yaml_emitter_t) bool {
  	if len(emitter.events)-emitter.events_head < 2 {
  		return false
  	}
  	return emitter.events[emitter.events_head].typ == yaml_MAPPING_START_EVENT &&
  		emitter.events[emitter.events_head+1].typ == yaml_MAPPING_END_EVENT
  }
  
  // Check if the next node can be expressed as a simple key.
  func yaml_emitter_check_simple_key(emitter *yaml_emitter_t) bool {
  	length := 0
  	switch emitter.events[emitter.events_head].typ {
  	case yaml_ALIAS_EVENT:
  		length += len(emitter.anchor_data.anchor)
  	case yaml_SCALAR_EVENT:
  		if emitter.scalar_data.multiline {
  			return false
  		}
  		length += len(emitter.anchor_data.anchor) +
  			len(emitter.tag_data.handle) +
  			len(emitter.tag_data.suffix) +
  			len(emitter.scalar_data.value)
  	case yaml_SEQUENCE_START_EVENT:
  		if !yaml_emitter_check_empty_sequence(emitter) {
  			return false
  		}
  		length += len(emitter.anchor_data.anchor) +
  			len(emitter.tag_data.handle) +
  			len(emitter.tag_data.suffix)
  	case yaml_MAPPING_START_EVENT:
  		if !yaml_emitter_check_empty_mapping(emitter) {
  			return false
  		}
  		length += len(emitter.anchor_data.anchor) +
  			len(emitter.tag_data.handle) +
  			len(emitter.tag_data.suffix)
  	default:
  		return false
  	}
  	return length <= 128
  }
  
  // Determine an acceptable scalar style.
  func yaml_emitter_select_scalar_style(emitter *yaml_emitter_t, event *yaml_event_t) bool {
  
  	no_tag := len(emitter.tag_data.handle) == 0 && len(emitter.tag_data.suffix) == 0
  	if no_tag && !event.implicit && !event.quoted_implicit {
  		return yaml_emitter_set_emitter_error(emitter, "neither tag nor implicit flags are specified")
  	}
  
  	style := event.scalar_style()
  	if style == yaml_ANY_SCALAR_STYLE {
  		style = yaml_PLAIN_SCALAR_STYLE
  	}
  	if emitter.canonical {
  		style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
  	}
  	if emitter.simple_key_context && emitter.scalar_data.multiline {
  		style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
  	}
  
  	if style == yaml_PLAIN_SCALAR_STYLE {
  		if emitter.flow_level > 0 && !emitter.scalar_data.flow_plain_allowed ||
  			emitter.flow_level == 0 && !emitter.scalar_data.block_plain_allowed {
  			style = yaml_SINGLE_QUOTED_SCALAR_STYLE
  		}
  		if len(emitter.scalar_data.value) == 0 && (emitter.flow_level > 0 || emitter.simple_key_context) {
  			style = yaml_SINGLE_QUOTED_SCALAR_STYLE
  		}
  		if no_tag && !event.implicit {
  			style = yaml_SINGLE_QUOTED_SCALAR_STYLE
  		}
  	}
  	if style == yaml_SINGLE_QUOTED_SCALAR_STYLE {
  		if !emitter.scalar_data.single_quoted_allowed {
  			style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
  		}
  	}
  	if style == yaml_LITERAL_SCALAR_STYLE || style == yaml_FOLDED_SCALAR_STYLE {
  		if !emitter.scalar_data.block_allowed || emitter.flow_level > 0 || emitter.simple_key_context {
  			style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
  		}
  	}
  
  	if no_tag && !event.quoted_implicit && style != yaml_PLAIN_SCALAR_STYLE {
  		emitter.tag_data.handle = []byte{'!'}
  	}
  	emitter.scalar_data.style = style
  	return true
  }
  
  // Write an anchor.
  func yaml_emitter_process_anchor(emitter *yaml_emitter_t) bool {
  	if emitter.anchor_data.anchor == nil {
  		return true
  	}
  	c := []byte{'&'}
  	if emitter.anchor_data.alias {
  		c[0] = '*'
  	}
  	if !yaml_emitter_write_indicator(emitter, c, true, false, false) {
  		return false
  	}
  	return yaml_emitter_write_anchor(emitter, emitter.anchor_data.anchor)
  }
  
  // Write a tag.
  func yaml_emitter_process_tag(emitter *yaml_emitter_t) bool {
  	if len(emitter.tag_data.handle) == 0 && len(emitter.tag_data.suffix) == 0 {
  		return true
  	}
  	if len(emitter.tag_data.handle) > 0 {
  		if !yaml_emitter_write_tag_handle(emitter, emitter.tag_data.handle) {
  			return false
  		}
  		if len(emitter.tag_data.suffix) > 0 {
  			if !yaml_emitter_write_tag_content(emitter, emitter.tag_data.suffix, false) {
  				return false
  			}
  		}
  	} else {
  		// [Go] Allocate these slices elsewhere.
  		if !yaml_emitter_write_indicator(emitter, []byte("!<"), true, false, false) {
  			return false
  		}
  		if !yaml_emitter_write_tag_content(emitter, emitter.tag_data.suffix, false) {
  			return false
  		}
  		if !yaml_emitter_write_indicator(emitter, []byte{'>'}, false, false, false) {
  			return false
  		}
  	}
  	return true
  }
  
  // Write a scalar.
  func yaml_emitter_process_scalar(emitter *yaml_emitter_t) bool {
  	switch emitter.scalar_data.style {
  	case yaml_PLAIN_SCALAR_STYLE:
  		return yaml_emitter_write_plain_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context)
  
  	case yaml_SINGLE_QUOTED_SCALAR_STYLE:
  		return yaml_emitter_write_single_quoted_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context)
  
  	case yaml_DOUBLE_QUOTED_SCALAR_STYLE:
  		return yaml_emitter_write_double_quoted_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context)
  
  	case yaml_LITERAL_SCALAR_STYLE:
  		return yaml_emitter_write_literal_scalar(emitter, emitter.scalar_data.value)
  
  	case yaml_FOLDED_SCALAR_STYLE:
  		return yaml_emitter_write_folded_scalar(emitter, emitter.scalar_data.value)
  	}
  	panic("unknown scalar style")
  }
  
  // Check if a %YAML directive is valid.
  func yaml_emitter_analyze_version_directive(emitter *yaml_emitter_t, version_directive *yaml_version_directive_t) bool {
  	if version_directive.major != 1 || version_directive.minor != 1 {
  		return yaml_emitter_set_emitter_error(emitter, "incompatible %YAML directive")
  	}
  	return true
  }
  
  // Check if a %TAG directive is valid.
  func yaml_emitter_analyze_tag_directive(emitter *yaml_emitter_t, tag_directive *yaml_tag_directive_t) bool {
  	handle := tag_directive.handle
  	prefix := tag_directive.prefix
  	if len(handle) == 0 {
  		return yaml_emitter_set_emitter_error(emitter, "tag handle must not be empty")
  	}
  	if handle[0] != '!' {
  		return yaml_emitter_set_emitter_error(emitter, "tag handle must start with '!'")
  	}
  	if handle[len(handle)-1] != '!' {
  		return yaml_emitter_set_emitter_error(emitter, "tag handle must end with '!'")
  	}
  	for i := 1; i < len(handle)-1; i += width(handle[i]) {
  		if !is_alpha(handle, i) {
  			return yaml_emitter_set_emitter_error(emitter, "tag handle must contain alphanumerical characters only")
  		}
  	}
  	if len(prefix) == 0 {
  		return yaml_emitter_set_emitter_error(emitter, "tag prefix must not be empty")
  	}
  	return true
  }
  
  // Check if an anchor is valid.
  func yaml_emitter_analyze_anchor(emitter *yaml_emitter_t, anchor []byte, alias bool) bool {
  	if len(anchor) == 0 {
  		problem := "anchor value must not be empty"
  		if alias {
  			problem = "alias value must not be empty"
  		}
  		return yaml_emitter_set_emitter_error(emitter, problem)
  	}
  	for i := 0; i < len(anchor); i += width(anchor[i]) {
  		if !is_alpha(anchor, i) {
  			problem := "anchor value must contain alphanumerical characters only"
  			if alias {
  				problem = "alias value must contain alphanumerical characters only"
  			}
  			return yaml_emitter_set_emitter_error(emitter, problem)
  		}
  	}
  	emitter.anchor_data.anchor = anchor
  	emitter.anchor_data.alias = alias
  	return true
  }
  
  // Check if a tag is valid.
  func yaml_emitter_analyze_tag(emitter *yaml_emitter_t, tag []byte) bool {
  	if len(tag) == 0 {
  		return yaml_emitter_set_emitter_error(emitter, "tag value must not be empty")
  	}
  	for i := 0; i < len(emitter.tag_directives); i++ {
  		tag_directive := &emitter.tag_directives[i]
  		if bytes.HasPrefix(tag, tag_directive.prefix) {
  			emitter.tag_data.handle = tag_directive.handle
  			emitter.tag_data.suffix = tag[len(tag_directive.prefix):]
  			return true
  		}
  	}
  	emitter.tag_data.suffix = tag
  	return true
  }
  
  // Check if a scalar is valid.
  func yaml_emitter_analyze_scalar(emitter *yaml_emitter_t, value []byte) bool {
  	var (
  		block_indicators   = false
  		flow_indicators    = false
  		line_breaks        = false
  		special_characters = false
  
  		leading_space  = false
  		leading_break  = false
  		trailing_space = false
  		trailing_break = false
  		break_space    = false
  		space_break    = false
  
  		preceded_by_whitespace = false
  		followed_by_whitespace = false
  		previous_space         = false
  		previous_break         = false
  	)
  
  	emitter.scalar_data.value = value
  
  	if len(value) == 0 {
  		emitter.scalar_data.multiline = false
  		emitter.scalar_data.flow_plain_allowed = false
  		emitter.scalar_data.block_plain_allowed = true
  		emitter.scalar_data.single_quoted_allowed = true
  		emitter.scalar_data.block_allowed = false
  		return true
  	}
  
  	if len(value) >= 3 && ((value[0] == '-' && value[1] == '-' && value[2] == '-') || (value[0] == '.' && value[1] == '.' && value[2] == '.')) {
  		block_indicators = true
  		flow_indicators = true
  	}
  
  	preceded_by_whitespace = true
  	for i, w := 0, 0; i < len(value); i += w {
  		w = width(value[i])
  		followed_by_whitespace = i+w >= len(value) || is_blank(value, i+w)
  
  		if i == 0 {
  			switch value[i] {
  			case '#', ',', '[', ']', '{', '}', '&', '*', '!', '|', '>', '\'', '"', '%', '@', '`':
  				flow_indicators = true
  				block_indicators = true
  			case '?', ':':
  				flow_indicators = true
  				if followed_by_whitespace {
  					block_indicators = true
  				}
  			case '-':
  				if followed_by_whitespace {
  					flow_indicators = true
  					block_indicators = true
  				}
  			}
  		} else {
  			switch value[i] {
  			case ',', '?', '[', ']', '{', '}':
  				flow_indicators = true
  			case ':':
  				flow_indicators = true
  				if followed_by_whitespace {
  					block_indicators = true
  				}
  			case '#':
  				if preceded_by_whitespace {
  					flow_indicators = true
  					block_indicators = true
  				}
  			}
  		}
  
  		if !is_printable(value, i) || !is_ascii(value, i) && !emitter.unicode {
  			special_characters = true
  		}
  		if is_space(value, i) {
  			if i == 0 {
  				leading_space = true
  			}
  			if i+width(value[i]) == len(value) {
  				trailing_space = true
  			}
  			if previous_break {
  				break_space = true
  			}
  			previous_space = true
  			previous_break = false
  		} else if is_break(value, i) {
  			line_breaks = true
  			if i == 0 {
  				leading_break = true
  			}
  			if i+width(value[i]) == len(value) {
  				trailing_break = true
  			}
  			if previous_space {
  				space_break = true
  			}
  			previous_space = false
  			previous_break = true
  		} else {
  			previous_space = false
  			previous_break = false
  		}
  
  		// [Go]: Why 'z'? Couldn't be the end of the string as that's the loop condition.
  		preceded_by_whitespace = is_blankz(value, i)
  	}
  
  	emitter.scalar_data.multiline = line_breaks
  	emitter.scalar_data.flow_plain_allowed = true
  	emitter.scalar_data.block_plain_allowed = true
  	emitter.scalar_data.single_quoted_allowed = true
  	emitter.scalar_data.block_allowed = true
  
  	if leading_space || leading_break || trailing_space || trailing_break {
  		emitter.scalar_data.flow_plain_allowed = false
  		emitter.scalar_data.block_plain_allowed = false
  	}
  	if trailing_space {
  		emitter.scalar_data.block_allowed = false
  	}
  	if break_space {
  		emitter.scalar_data.flow_plain_allowed = false
  		emitter.scalar_data.block_plain_allowed = false
  		emitter.scalar_data.single_quoted_allowed = false
  	}
  	if space_break || special_characters {
  		emitter.scalar_data.flow_plain_allowed = false
  		emitter.scalar_data.block_plain_allowed = false
  		emitter.scalar_data.single_quoted_allowed = false
  		emitter.scalar_data.block_allowed = false
  	}
  	if line_breaks {
  		emitter.scalar_data.flow_plain_allowed = false
  		emitter.scalar_data.block_plain_allowed = false
  	}
  	if flow_indicators {
  		emitter.scalar_data.flow_plain_allowed = false
  	}
  	if block_indicators {
  		emitter.scalar_data.block_plain_allowed = false
  	}
  	return true
  }
  
  // Check if the event data is valid.
  func yaml_emitter_analyze_event(emitter *yaml_emitter_t, event *yaml_event_t) bool {
  
  	emitter.anchor_data.anchor = nil
  	emitter.tag_data.handle = nil
  	emitter.tag_data.suffix = nil
  	emitter.scalar_data.value = nil
  
  	switch event.typ {
  	case yaml_ALIAS_EVENT:
  		if !yaml_emitter_analyze_anchor(emitter, event.anchor, true) {
  			return false
  		}
  
  	case yaml_SCALAR_EVENT:
  		if len(event.anchor) > 0 {
  			if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) {
  				return false
  			}
  		}
  		if len(event.tag) > 0 && (emitter.canonical || (!event.implicit && !event.quoted_implicit)) {
  			if !yaml_emitter_analyze_tag(emitter, event.tag) {
  				return false
  			}
  		}
  		if !yaml_emitter_analyze_scalar(emitter, event.value) {
  			return false
  		}
  
  	case yaml_SEQUENCE_START_EVENT:
  		if len(event.anchor) > 0 {
  			if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) {
  				return false
  			}
  		}
  		if len(event.tag) > 0 && (emitter.canonical || !event.implicit) {
  			if !yaml_emitter_analyze_tag(emitter, event.tag) {
  				return false
  			}
  		}
  
  	case yaml_MAPPING_START_EVENT:
  		if len(event.anchor) > 0 {
  			if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) {
  				return false
  			}
  		}
  		if len(event.tag) > 0 && (emitter.canonical || !event.implicit) {
  			if !yaml_emitter_analyze_tag(emitter, event.tag) {
  				return false
  			}
  		}
  	}
  	return true
  }
  
  // Write the BOM character.
  func yaml_emitter_write_bom(emitter *yaml_emitter_t) bool {
  	if !flush(emitter) {
  		return false
  	}
  	pos := emitter.buffer_pos
  	emitter.buffer[pos+0] = '\xEF'
  	emitter.buffer[pos+1] = '\xBB'
  	emitter.buffer[pos+2] = '\xBF'
  	emitter.buffer_pos += 3
  	return true
  }
  
  func yaml_emitter_write_indent(emitter *yaml_emitter_t) bool {
  	indent := emitter.indent
  	if indent < 0 {
  		indent = 0
  	}
  	if !emitter.indention || emitter.column > indent || (emitter.column == indent && !emitter.whitespace) {
  		if !put_break(emitter) {
  			return false
  		}
  	}
  	for emitter.column < indent {
  		if !put(emitter, ' ') {
  			return false
  		}
  	}
  	emitter.whitespace = true
  	emitter.indention = true
  	return true
  }
  
  func yaml_emitter_write_indicator(emitter *yaml_emitter_t, indicator []byte, need_whitespace, is_whitespace, is_indention bool) bool {
  	if need_whitespace && !emitter.whitespace {
  		if !put(emitter, ' ') {
  			return false
  		}
  	}
  	if !write_all(emitter, indicator) {
  		return false
  	}
  	emitter.whitespace = is_whitespace
  	emitter.indention = (emitter.indention && is_indention)
  	emitter.open_ended = false
  	return true
  }
  
  func yaml_emitter_write_anchor(emitter *yaml_emitter_t, value []byte) bool {
  	if !write_all(emitter, value) {
  		return false
  	}
  	emitter.whitespace = false
  	emitter.indention = false
  	return true
  }
  
  func yaml_emitter_write_tag_handle(emitter *yaml_emitter_t, value []byte) bool {
  	if !emitter.whitespace {
  		if !put(emitter, ' ') {
  			return false
  		}
  	}
  	if !write_all(emitter, value) {
  		return false
  	}
  	emitter.whitespace = false
  	emitter.indention = false
  	return true
  }
  
  func yaml_emitter_write_tag_content(emitter *yaml_emitter_t, value []byte, need_whitespace bool) bool {
  	if need_whitespace && !emitter.whitespace {
  		if !put(emitter, ' ') {
  			return false
  		}
  	}
  	for i := 0; i < len(value); {
  		var must_write bool
  		switch value[i] {
  		case ';', '/', '?', ':', '@', '&', '=', '+', '$', ',', '_', '.', '~', '*', '\'', '(', ')', '[', ']':
  			must_write = true
  		default:
  			must_write = is_alpha(value, i)
  		}
  		if must_write {
  			if !write(emitter, value, &i) {
  				return false
  			}
  		} else {
  			w := width(value[i])
  			for k := 0; k < w; k++ {
  				octet := value[i]
  				i++
  				if !put(emitter, '%') {
  					return false
  				}
  
  				c := octet >> 4
  				if c < 10 {
  					c += '0'
  				} else {
  					c += 'A' - 10
  				}
  				if !put(emitter, c) {
  					return false
  				}
  
  				c = octet & 0x0f
  				if c < 10 {
  					c += '0'
  				} else {
  					c += 'A' - 10
  				}
  				if !put(emitter, c) {
  					return false
  				}
  			}
  		}
  	}
  	emitter.whitespace = false
  	emitter.indention = false
  	return true
  }
  
  func yaml_emitter_write_plain_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool {
  	if !emitter.whitespace {
  		if !put(emitter, ' ') {
  			return false
  		}
  	}
  
  	spaces := false
  	breaks := false
  	for i := 0; i < len(value); {
  		if is_space(value, i) {
  			if allow_breaks && !spaces && emitter.column > emitter.best_width && !is_space(value, i+1) {
  				if !yaml_emitter_write_indent(emitter) {
  					return false
  				}
  				i += width(value[i])
  			} else {
  				if !write(emitter, value, &i) {
  					return false
  				}
  			}
  			spaces = true
  		} else if is_break(value, i) {
  			if !breaks && value[i] == '\n' {
  				if !put_break(emitter) {
  					return false
  				}
  			}
  			if !write_break(emitter, value, &i) {
  				return false
  			}
  			emitter.indention = true
  			breaks = true
  		} else {
  			if breaks {
  				if !yaml_emitter_write_indent(emitter) {
  					return false
  				}
  			}
  			if !write(emitter, value, &i) {
  				return false
  			}
  			emitter.indention = false
  			spaces = false
  			breaks = false
  		}
  	}
  
  	emitter.whitespace = false
  	emitter.indention = false
  	if emitter.root_context {
  		emitter.open_ended = true
  	}
  
  	return true
  }
  
  func yaml_emitter_write_single_quoted_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool {
  
  	if !yaml_emitter_write_indicator(emitter, []byte{'\''}, true, false, false) {
  		return false
  	}
  
  	spaces := false
  	breaks := false
  	for i := 0; i < len(value); {
  		if is_space(value, i) {
  			if allow_breaks && !spaces && emitter.column > emitter.best_width && i > 0 && i < len(value)-1 && !is_space(value, i+1) {
  				if !yaml_emitter_write_indent(emitter) {
  					return false
  				}
  				i += width(value[i])
  			} else {
  				if !write(emitter, value, &i) {
  					return false
  				}
  			}
  			spaces = true
  		} else if is_break(value, i) {
  			if !breaks && value[i] == '\n' {
  				if !put_break(emitter) {
  					return false
  				}
  			}
  			if !write_break(emitter, value, &i) {
  				return false
  			}
  			emitter.indention = true
  			breaks = true
  		} else {
  			if breaks {
  				if !yaml_emitter_write_indent(emitter) {
  					return false
  				}
  			}
  			if value[i] == '\'' {
  				if !put(emitter, '\'') {
  					return false
  				}
  			}
  			if !write(emitter, value, &i) {
  				return false
  			}
  			emitter.indention = false
  			spaces = false
  			breaks = false
  		}
  	}
  	if !yaml_emitter_write_indicator(emitter, []byte{'\''}, false, false, false) {
  		return false
  	}
  	emitter.whitespace = false
  	emitter.indention = false
  	return true
  }
  
  func yaml_emitter_write_double_quoted_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool {
  	spaces := false
  	if !yaml_emitter_write_indicator(emitter, []byte{'"'}, true, false, false) {
  		return false
  	}
  
  	for i := 0; i < len(value); {
  		if !is_printable(value, i) || (!emitter.unicode && !is_ascii(value, i)) ||
  			is_bom(value, i) || is_break(value, i) ||
  			value[i] == '"' || value[i] == '\\' {
  
  			octet := value[i]
  
  			var w int
  			var v rune
  			switch {
  			case octet&0x80 == 0x00:
  				w, v = 1, rune(octet&0x7F)
  			case octet&0xE0 == 0xC0:
  				w, v = 2, rune(octet&0x1F)
  			case octet&0xF0 == 0xE0:
  				w, v = 3, rune(octet&0x0F)
  			case octet&0xF8 == 0xF0:
  				w, v = 4, rune(octet&0x07)
  			}
  			for k := 1; k < w; k++ {
  				octet = value[i+k]
  				v = (v << 6) + (rune(octet) & 0x3F)
  			}
  			i += w
  
  			if !put(emitter, '\\') {
  				return false
  			}
  
  			var ok bool
  			switch v {
  			case 0x00:
  				ok = put(emitter, '0')
  			case 0x07:
  				ok = put(emitter, 'a')
  			case 0x08:
  				ok = put(emitter, 'b')
  			case 0x09:
  				ok = put(emitter, 't')
  			case 0x0A:
  				ok = put(emitter, 'n')
  			case 0x0b:
  				ok = put(emitter, 'v')
  			case 0x0c:
  				ok = put(emitter, 'f')
  			case 0x0d:
  				ok = put(emitter, 'r')
  			case 0x1b:
  				ok = put(emitter, 'e')
  			case 0x22:
  				ok = put(emitter, '"')
  			case 0x5c:
  				ok = put(emitter, '\\')
  			case 0x85:
  				ok = put(emitter, 'N')
  			case 0xA0:
  				ok = put(emitter, '_')
  			case 0x2028:
  				ok = put(emitter, 'L')
  			case 0x2029:
  				ok = put(emitter, 'P')
  			default:
  				if v <= 0xFF {
  					ok = put(emitter, 'x')
  					w = 2
  				} else if v <= 0xFFFF {
  					ok = put(emitter, 'u')
  					w = 4
  				} else {
  					ok = put(emitter, 'U')
  					w = 8
  				}
  				for k := (w - 1) * 4; ok && k >= 0; k -= 4 {
  					digit := byte((v >> uint(k)) & 0x0F)
  					if digit < 10 {
  						ok = put(emitter, digit+'0')
  					} else {
  						ok = put(emitter, digit+'A'-10)
  					}
  				}
  			}
  			if !ok {
  				return false
  			}
  			spaces = false
  		} else if is_space(value, i) {
  			if allow_breaks && !spaces && emitter.column > emitter.best_width && i > 0 && i < len(value)-1 {
  				if !yaml_emitter_write_indent(emitter) {
  					return false
  				}
  				if is_space(value, i+1) {
  					if !put(emitter, '\\') {
  						return false
  					}
  				}
  				i += width(value[i])
  			} else if !write(emitter, value, &i) {
  				return false
  			}
  			spaces = true
  		} else {
  			if !write(emitter, value, &i) {
  				return false
  			}
  			spaces = false
  		}
  	}
  	if !yaml_emitter_write_indicator(emitter, []byte{'"'}, false, false, false) {
  		return false
  	}
  	emitter.whitespace = false
  	emitter.indention = false
  	return true
  }
  
  func yaml_emitter_write_block_scalar_hints(emitter *yaml_emitter_t, value []byte) bool {
  	if is_space(value, 0) || is_break(value, 0) {
  		indent_hint := []byte{'0' + byte(emitter.best_indent)}
  		if !yaml_emitter_write_indicator(emitter, indent_hint, false, false, false) {
  			return false
  		}
  	}
  
  	emitter.open_ended = false
  
  	var chomp_hint [1]byte
  	if len(value) == 0 {
  		chomp_hint[0] = '-'
  	} else {
  		i := len(value) - 1
  		for value[i]&0xC0 == 0x80 {
  			i--
  		}
  		if !is_break(value, i) {
  			chomp_hint[0] = '-'
  		} else if i == 0 {
  			chomp_hint[0] = '+'
  			emitter.open_ended = true
  		} else {
  			i--
  			for value[i]&0xC0 == 0x80 {
  				i--
  			}
  			if is_break(value, i) {
  				chomp_hint[0] = '+'
  				emitter.open_ended = true
  			}
  		}
  	}
  	if chomp_hint[0] != 0 {
  		if !yaml_emitter_write_indicator(emitter, chomp_hint[:], false, false, false) {
  			return false
  		}
  	}
  	return true
  }
  
  func yaml_emitter_write_literal_scalar(emitter *yaml_emitter_t, value []byte) bool {
  	if !yaml_emitter_write_indicator(emitter, []byte{'|'}, true, false, false) {
  		return false
  	}
  	if !yaml_emitter_write_block_scalar_hints(emitter, value) {
  		return false
  	}
  	if !put_break(emitter) {
  		return false
  	}
  	emitter.indention = true
  	emitter.whitespace = true
  	breaks := true
  	for i := 0; i < len(value); {
  		if is_break(value, i) {
  			if !write_break(emitter, value, &i) {
  				return false
  			}
  			emitter.indention = true
  			breaks = true
  		} else {
  			if breaks {
  				if !yaml_emitter_write_indent(emitter) {
  					return false
  				}
  			}
  			if !write(emitter, value, &i) {
  				return false
  			}
  			emitter.indention = false
  			breaks = false
  		}
  	}
  
  	return true
  }
  
  func yaml_emitter_write_folded_scalar(emitter *yaml_emitter_t, value []byte) bool {
  	if !yaml_emitter_write_indicator(emitter, []byte{'>'}, true, false, false) {
  		return false
  	}
  	if !yaml_emitter_write_block_scalar_hints(emitter, value) {
  		return false
  	}
  
  	if !put_break(emitter) {
  		return false
  	}
  	emitter.indention = true
  	emitter.whitespace = true
  
  	breaks := true
  	leading_spaces := true
  	for i := 0; i < len(value); {
  		if is_break(value, i) {
  			if !breaks && !leading_spaces && value[i] == '\n' {
  				k := 0
  				for is_break(value, k) {
  					k += width(value[k])
  				}
  				if !is_blankz(value, k) {
  					if !put_break(emitter) {
  						return false
  					}
  				}
  			}
  			if !write_break(emitter, value, &i) {
  				return false
  			}
  			emitter.indention = true
  			breaks = true
  		} else {
  			if breaks {
  				if !yaml_emitter_write_indent(emitter) {
  					return false
  				}
  				leading_spaces = is_blank(value, i)
  			}
  			if !breaks && is_space(value, i) && !is_space(value, i+1) && emitter.column > emitter.best_width {
  				if !yaml_emitter_write_indent(emitter) {
  					return false
  				}
  				i += width(value[i])
  			} else {
  				if !write(emitter, value, &i) {
  					return false
  				}
  			}
  			emitter.indention = false
  			breaks = false
  		}
  	}
  	return true
  }
  