Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

4 files changed, 962 insertions, 0 deletions

diff --git a/third_party/python/PyYAML/examples/pygments-lexer/example.yaml b/third_party/python/PyYAML/examples/pygments-lexer/example.yaml
new file mode 100644
index 0000000000..9c0ed9d082
--- /dev/null
+++ b/third_party/python/PyYAML/examples/pygments-lexer/example.yaml
@@ -0,0 +1,302 @@
+
+#
+# Examples from the Preview section of the YAML specification
+# (http://yaml.org/spec/1.2/#Preview)
+#
+
+# Sequence of scalars
+---
+- Mark McGwire
+- Sammy Sosa
+- Ken Griffey
+
+# Mapping scalars to scalars
+---
+hr:  65    # Home runs
+avg: 0.278 # Batting average
+rbi: 147   # Runs Batted In
+
+# Mapping scalars to sequences
+---
+american:
+  - Boston Red Sox
+  - Detroit Tigers
+  - New York Yankees
+national:
+  - New York Mets
+  - Chicago Cubs
+  - Atlanta Braves
+
+# Sequence of mappings
+---
+-
+  name: Mark McGwire
+  hr:   65
+  avg:  0.278
+-
+  name: Sammy Sosa
+  hr:   63
+  avg:  0.288
+
+# Sequence of sequences
+---
+- [name        , hr, avg  ]
+- [Mark McGwire, 65, 0.278]
+- [Sammy Sosa  , 63, 0.288]
+
+# Mapping of mappings
+---
+Mark McGwire: {hr: 65, avg: 0.278}
+Sammy Sosa: {
+    hr: 63,
+    avg: 0.288
+  }
+
+# Two documents in a stream
+--- # Ranking of 1998 home runs
+- Mark McGwire
+- Sammy Sosa
+- Ken Griffey
+--- # Team ranking
+- Chicago Cubs
+- St Louis Cardinals
+
+# Documents with the end indicator
+---
+time: 20:03:20
+player: Sammy Sosa
+action: strike (miss)
+...
+---
+time: 20:03:47
+player: Sammy Sosa
+action: grand slam
+...
+
+# Comments
+---
+hr: # 1998 hr ranking
+  - Mark McGwire
+  - Sammy Sosa
+rbi:
+  # 1998 rbi ranking
+  - Sammy Sosa
+  - Ken Griffey
+
+# Anchors and aliases
+---
+hr:
+  - Mark McGwire
+  # Following node labeled SS
+  - &SS Sammy Sosa
+rbi:
+  - *SS # Subsequent occurrence
+  - Ken Griffey
+
+# Mapping between sequences
+---
+? - Detroit Tigers
+  - Chicago cubs
+:
+  - 2001-07-23
+? [ New York Yankees,
+    Atlanta Braves ]
+: [ 2001-07-02, 2001-08-12,
+    2001-08-14 ]
+
+# Inline nested mapping
+---
+# products purchased
+- item    : Super Hoop
+  quantity: 1
+- item    : Basketball
+  quantity: 4
+- item    : Big Shoes
+  quantity: 1
+
+# Literal scalars
+--- | # ASCII art
+  \//||\/||
+  // ||  ||__
+
+# Folded scalars
+--- >
+  Mark McGwire's
+  year was crippled
+  by a knee injury.
+
+# Preserved indented block in a folded scalar
+---
+>
+ Sammy Sosa completed another
+ fine season with great stats.
+
+   63 Home Runs
+   0.288 Batting Average
+
+ What a year!
+
+# Indentation determines scope
+---
+name: Mark McGwire
+accomplishment: >
+  Mark set a major league
+  home run record in 1998.
+stats: |
+  65 Home Runs
+  0.278 Batting Average
+
+# Quoted scalars
+---
+unicode: "Sosa did fine.\u263A"
+control: "\b1998\t1999\t2000\n"
+hex esc: "\x0d\x0a is \r\n"
+single: '"Howdy!" he cried.'
+quoted: ' # not a ''comment''.'
+tie-fighter: '|\-*-/|'
+
+# Multi-line flow scalars
+---
+plain:
+  This unquoted scalar
+  spans many lines.
+quoted: "So does this
+  quoted scalar.\n"
+
+# Integers
+---
+canonical: 12345
+decimal: +12_345
+sexagesimal: 3:25:45
+octal: 014
+hexadecimal: 0xC
+
+# Floating point
+---
+canonical: 1.23015e+3
+exponential: 12.3015e+02
+sexagesimal: 20:30.15
+fixed: 1_230.15
+negative infinity: -.inf
+not a number: .NaN
+
+# Miscellaneous
+---
+null: ~
+true: boolean
+false: boolean
+string: '12345'
+
+# Timestamps
+---
+canonical: 2001-12-15T02:59:43.1Z
+iso8601: 2001-12-14t21:59:43.10-05:00
+spaced: 2001-12-14 21:59:43.10 -5
+date: 2002-12-14
+
+# Various explicit tags
+---
+not-date: !!str 2002-04-28
+picture: !!binary |
+ R0lGODlhDAAMAIQAAP//9/X
+ 17unp5WZmZgAAAOfn515eXv
+ Pz7Y6OjuDg4J+fn5OTk6enp
+ 56enmleECcgggoBADs=
+application specific tag: !something |
+ The semantics of the tag
+ above may be different for
+ different documents.
+
+# Global tags
+%TAG ! tag:clarkevans.com,2002:
+--- !shape
+  # Use the ! handle for presenting
+  # tag:clarkevans.com,2002:circle
+- !circle
+  center: &ORIGIN {x: 73, y: 129}
+  radius: 7
+- !line
+  start: *ORIGIN
+  finish: { x: 89, y: 102 }
+- !label
+  start: *ORIGIN
+  color: 0xFFEEBB
+  text: Pretty vector drawing.
+
+# Unordered sets
+--- !!set
+# sets are represented as a
+# mapping where each key is
+# associated with the empty string
+? Mark McGwire
+? Sammy Sosa
+? Ken Griff
+
+# Ordered mappings
+--- !!omap
+# ordered maps are represented as
+# a sequence of mappings, with
+# each mapping having one key
+- Mark McGwire: 65
+- Sammy Sosa: 63
+- Ken Griffy: 58
+
+# Full length example
+--- !<tag:clarkevans.com,2002:invoice>
+invoice: 34843
+date   : 2001-01-23
+bill-to: &id001
+    given  : Chris
+    family : Dumars
+    address:
+        lines: |
+            458 Walkman Dr.
+            Suite #292
+        city    : Royal Oak
+        state   : MI
+        postal  : 48046
+ship-to: *id001
+product:
+    - sku         : BL394D
+      quantity    : 4
+      description : Basketball
+      price       : 450.00
+    - sku         : BL4438H
+      quantity    : 1
+      description : Super Hoop
+      price       : 2392.00
+tax  : 251.42
+total: 4443.52
+comments:
+    Late afternoon is best.
+    Backup contact is Nancy
+    Billsmer @ 338-4338.
+
+# Another full-length example
+---
+Time: 2001-11-23 15:01:42 -5
+User: ed
+Warning:
+  This is an error message
+  for the log file
+---
+Time: 2001-11-23 15:02:31 -5
+User: ed
+Warning:
+  A slightly different error
+  message.
+---
+Date: 2001-11-23 15:03:17 -5
+User: ed
+Fatal:
+  Unknown variable "bar"
+Stack:
+  - file: TopClass.py
+    line: 23
+    code: |
+      x = MoreObject("345\n")
+  - file: MoreClass.py
+    line: 58
+    code: |-
+      foo = bar
+
diff --git a/third_party/python/PyYAML/examples/pygments-lexer/yaml.py b/third_party/python/PyYAML/examples/pygments-lexer/yaml.py
new file mode 100644
index 0000000000..1a1bbdeb3a
--- /dev/null
+++ b/third_party/python/PyYAML/examples/pygments-lexer/yaml.py
@@ -0,0 +1,431 @@
+
+"""
+yaml.py
+
+Lexer for YAML, a human-friendly data serialization language
+(http://yaml.org/).
+
+Written by Kirill Simonov <xi@resolvent.net>.
+
+License: Whatever suitable for inclusion into the Pygments package.
+"""
+
+from pygments.lexer import  \
+        ExtendedRegexLexer, LexerContext, include, bygroups
+from pygments.token import  \
+        Text, Comment, Punctuation, Name, Literal
+
+__all__ = ['YAMLLexer']
+
+
+class YAMLLexerContext(LexerContext):
+    """Indentation context for the YAML lexer."""
+
+    def __init__(self, *args, **kwds):
+        super(YAMLLexerContext, self).__init__(*args, **kwds)
+        self.indent_stack = []
+        self.indent = -1
+        self.next_indent = 0
+        self.block_scalar_indent = None
+
+
+def something(TokenClass):
+    """Do not produce empty tokens."""
+    def callback(lexer, match, context):
+        text = match.group()
+        if not text:
+            return
+        yield match.start(), TokenClass, text
+        context.pos = match.end()
+    return callback
+
+def reset_indent(TokenClass):
+    """Reset the indentation levels."""
+    def callback(lexer, match, context):
+        text = match.group()
+        context.indent_stack = []
+        context.indent = -1
+        context.next_indent = 0
+        context.block_scalar_indent = None
+        yield match.start(), TokenClass, text
+        context.pos = match.end()
+    return callback
+
+def save_indent(TokenClass, start=False):
+    """Save a possible indentation level."""
+    def callback(lexer, match, context):
+        text = match.group()
+        extra = ''
+        if start:
+            context.next_indent = len(text)
+            if context.next_indent < context.indent:
+                while context.next_indent < context.indent:
+                    context.indent = context.indent_stack.pop()
+                if context.next_indent > context.indent:
+                    extra = text[context.indent:]
+                    text = text[:context.indent]
+        else:
+            context.next_indent += len(text)
+        if text:
+            yield match.start(), TokenClass, text
+        if extra:
+            yield match.start()+len(text), TokenClass.Error, extra
+        context.pos = match.end()
+    return callback
+
+def set_indent(TokenClass, implicit=False):
+    """Set the previously saved indentation level."""
+    def callback(lexer, match, context):
+        text = match.group()
+        if context.indent < context.next_indent:
+            context.indent_stack.append(context.indent)
+            context.indent = context.next_indent
+        if not implicit:
+            context.next_indent += len(text)
+        yield match.start(), TokenClass, text
+        context.pos = match.end()
+    return callback
+
+def set_block_scalar_indent(TokenClass):
+    """Set an explicit indentation level for a block scalar."""
+    def callback(lexer, match, context):
+        text = match.group()
+        context.block_scalar_indent = None
+        if not text:
+            return
+        increment = match.group(1)
+        if increment:
+            current_indent = max(context.indent, 0)
+            increment = int(increment)
+            context.block_scalar_indent = current_indent + increment
+        if text:
+            yield match.start(), TokenClass, text
+            context.pos = match.end()
+    return callback
+
+def parse_block_scalar_empty_line(IndentTokenClass, ContentTokenClass):
+    """Process an empty line in a block scalar."""
+    def callback(lexer, match, context):
+        text = match.group()
+        if (context.block_scalar_indent is None or
+                len(text) <= context.block_scalar_indent):
+            if text:
+                yield match.start(), IndentTokenClass, text
+        else:
+            indentation = text[:context.block_scalar_indent]
+            content = text[context.block_scalar_indent:]
+            yield match.start(), IndentTokenClass, indentation
+            yield (match.start()+context.block_scalar_indent,
+                    ContentTokenClass, content)
+        context.pos = match.end()
+    return callback
+
+def parse_block_scalar_indent(TokenClass):
+    """Process indentation spaces in a block scalar."""
+    def callback(lexer, match, context):
+        text = match.group()
+        if context.block_scalar_indent is None:
+            if len(text) <= max(context.indent, 0):
+                context.stack.pop()
+                context.stack.pop()
+                return
+            context.block_scalar_indent = len(text)
+        else:
+            if len(text) < context.block_scalar_indent:
+                context.stack.pop()
+                context.stack.pop()
+                return
+        if text:
+            yield match.start(), TokenClass, text
+            context.pos = match.end()
+    return callback
+
+def parse_plain_scalar_indent(TokenClass):
+    """Process indentation spaces in a plain scalar."""
+    def callback(lexer, match, context):
+        text = match.group()
+        if len(text) <= context.indent:
+            context.stack.pop()
+            context.stack.pop()
+            return
+        if text:
+            yield match.start(), TokenClass, text
+            context.pos = match.end()
+    return callback
+
+
+class YAMLLexer(ExtendedRegexLexer):
+    """Lexer for the YAML language."""
+
+    name = 'YAML'
+    aliases = ['yaml']
+    filenames = ['*.yaml', '*.yml']
+    mimetypes = ['text/x-yaml']
+
+    tokens = {
+
+        # the root rules
+        'root': [
+            # ignored whitespaces
+            (r'[ ]+(?=#|$)', Text.Blank),
+            # line breaks
+            (r'\n+', Text.Break),
+            # a comment
+            (r'#[^\n]*', Comment.Single),
+            # the '%YAML' directive
+            (r'^%YAML(?=[ ]|$)', reset_indent(Name.Directive),
+                'yaml-directive'),
+            # the %TAG directive
+            (r'^%TAG(?=[ ]|$)', reset_indent(Name.Directive),
+                'tag-directive'),
+            # document start and document end indicators
+            (r'^(?:---|\.\.\.)(?=[ ]|$)',
+                reset_indent(Punctuation.Document), 'block-line'),
+            # indentation spaces
+            (r'[ ]*(?![ \t\n\r\f\v]|$)',
+                save_indent(Text.Indent, start=True),
+                ('block-line', 'indentation')),
+        ],
+
+        # trailing whitespaces after directives or a block scalar indicator
+        'ignored-line': [
+            # ignored whitespaces
+            (r'[ ]+(?=#|$)', Text.Blank),
+            # a comment
+            (r'#[^\n]*', Comment.Single),
+            # line break
+            (r'\n', Text.Break, '#pop:2'),
+        ],
+
+        # the %YAML directive
+        'yaml-directive': [
+            # the version number
+            (r'([ ]+)([0-9]+\.[0-9]+)',
+                bygroups(Text.Blank, Literal.Version), 'ignored-line'),
+        ],
+
+        # the %YAG directive
+        'tag-directive': [
+            # a tag handle and the corresponding prefix
+            (r'([ ]+)(!|![0-9A-Za-z_-]*!)'
+                r'([ ]+)(!|!?[0-9A-Za-z;/?:@&=+$,_.!~*\'()\[\]%-]+)',
+                bygroups(Text.Blank, Name.Type, Text.Blank, Name.Type),
+                'ignored-line'),
+        ],
+
+        # block scalar indicators and indentation spaces
+        'indentation': [
+            # trailing whitespaces are ignored
+            (r'[ ]*$', something(Text.Blank), '#pop:2'),
+            # whitespaces preceding block collection indicators
+            (r'[ ]+(?=[?:-](?:[ ]|$))', save_indent(Text.Indent)),
+            # block collection indicators
+            (r'[?:-](?=[ ]|$)', set_indent(Punctuation.Indicator)),
+            # the beginning a block line
+            (r'[ ]*', save_indent(Text.Indent), '#pop'),
+        ],
+
+        # an indented line in the block context
+        'block-line': [
+            # the line end
+            (r'[ ]*(?=#|$)', something(Text.Blank), '#pop'),
+            # whitespaces separating tokens
+            (r'[ ]+', Text.Blank),
+            # tags, anchors and aliases,
+            include('descriptors'),
+            # block collections and scalars
+            include('block-nodes'),
+            # flow collections and quoted scalars
+            include('flow-nodes'),
+            # a plain scalar
+            (r'(?=[^ \t\n\r\f\v?:,\[\]{}#&*!|>\'"%@`-]|[?:-][^ \t\n\r\f\v])',
+                something(Literal.Scalar.Plain),
+                'plain-scalar-in-block-context'),
+        ],
+
+        # tags, anchors, aliases
+        'descriptors' : [
+            # a full-form tag
+            (r'!<[0-9A-Za-z;/?:@&=+$,_.!~*\'()\[\]%-]+>', Name.Type),
+            # a tag in the form '!', '!suffix' or '!handle!suffix'
+            (r'!(?:[0-9A-Za-z_-]+)?'
+                r'(?:![0-9A-Za-z;/?:@&=+$,_.!~*\'()\[\]%-]+)?', Name.Type),
+            # an anchor
+            (r'&[0-9A-Za-z_-]+', Name.Anchor),
+            # an alias
+            (r'\*[0-9A-Za-z_-]+', Name.Alias),
+        ],
+
+        # block collections and scalars
+        'block-nodes': [
+            # implicit key
+            (r':(?=[ ]|$)', set_indent(Punctuation.Indicator, implicit=True)),
+            # literal and folded scalars
+            (r'[|>]', Punctuation.Indicator,
+                ('block-scalar-content', 'block-scalar-header')),
+        ],
+
+        # flow collections and quoted scalars
+        'flow-nodes': [
+            # a flow sequence
+            (r'\[', Punctuation.Indicator, 'flow-sequence'),
+            # a flow mapping
+            (r'\{', Punctuation.Indicator, 'flow-mapping'),
+            # a single-quoted scalar
+            (r'\'', Literal.Scalar.Flow.Quote, 'single-quoted-scalar'),
+            # a double-quoted scalar
+            (r'\"', Literal.Scalar.Flow.Quote, 'double-quoted-scalar'),
+        ],
+
+        # the content of a flow collection
+        'flow-collection': [
+            # whitespaces
+            (r'[ ]+', Text.Blank),
+            # line breaks
+            (r'\n+', Text.Break),
+            # a comment
+            (r'#[^\n]*', Comment.Single),
+            # simple indicators
+            (r'[?:,]', Punctuation.Indicator),
+            # tags, anchors and aliases
+            include('descriptors'),
+            # nested collections and quoted scalars
+            include('flow-nodes'),
+            # a plain scalar
+            (r'(?=[^ \t\n\r\f\v?:,\[\]{}#&*!|>\'"%@`])',
+                something(Literal.Scalar.Plain),
+                'plain-scalar-in-flow-context'),
+        ],
+
+        # a flow sequence indicated by '[' and ']'
+        'flow-sequence': [
+            # include flow collection rules
+            include('flow-collection'),
+            # the closing indicator
+            (r'\]', Punctuation.Indicator, '#pop'),
+        ],
+
+        # a flow mapping indicated by '{' and '}'
+        'flow-mapping': [
+            # include flow collection rules
+            include('flow-collection'),
+            # the closing indicator
+            (r'\}', Punctuation.Indicator, '#pop'),
+        ],
+
+        # block scalar lines
+        'block-scalar-content': [
+            # line break
+            (r'\n', Text.Break),
+            # empty line
+            (r'^[ ]+$',
+                parse_block_scalar_empty_line(Text.Indent,
+                    Literal.Scalar.Block)),
+            # indentation spaces (we may leave the state here)
+            (r'^[ ]*', parse_block_scalar_indent(Text.Indent)),
+            # line content
+            (r'[^\n\r\f\v]+', Literal.Scalar.Block),
+        ],
+
+        # the content of a literal or folded scalar
+        'block-scalar-header': [
+            # indentation indicator followed by chomping flag
+            (r'([1-9])?[+-]?(?=[ ]|$)',
+                set_block_scalar_indent(Punctuation.Indicator),
+                'ignored-line'),
+            # chomping flag followed by indentation indicator
+            (r'[+-]?([1-9])?(?=[ ]|$)',
+                set_block_scalar_indent(Punctuation.Indicator),
+                'ignored-line'),
+        ],
+
+        # ignored and regular whitespaces in quoted scalars
+        'quoted-scalar-whitespaces': [
+            # leading and trailing whitespaces are ignored
+            (r'^[ ]+|[ ]+$', Text.Blank),
+            # line breaks are ignored
+            (r'\n+', Text.Break),
+            # other whitespaces are a part of the value
+            (r'[ ]+', Literal.Scalar.Flow),
+        ],
+
+        # single-quoted scalars
+        'single-quoted-scalar': [
+            # include whitespace and line break rules
+            include('quoted-scalar-whitespaces'),
+            # escaping of the quote character
+            (r'\'\'', Literal.Scalar.Flow.Escape),
+            # regular non-whitespace characters
+            (r'[^ \t\n\r\f\v\']+', Literal.Scalar.Flow),
+            # the closing quote
+            (r'\'', Literal.Scalar.Flow.Quote, '#pop'),
+        ],
+
+        # double-quoted scalars
+        'double-quoted-scalar': [
+            # include whitespace and line break rules
+            include('quoted-scalar-whitespaces'),
+            # escaping of special characters
+            (r'\\[0abt\tn\nvfre "\\N_LP]', Literal.Scalar.Flow.Escape),
+            # escape codes
+            (r'\\(?:x[0-9A-Fa-f]{2}|u[0-9A-Fa-f]{4}|U[0-9A-Fa-f]{8})',
+                Literal.Scalar.Flow.Escape),
+            # regular non-whitespace characters
+            (r'[^ \t\n\r\f\v\"\\]+', Literal.Scalar.Flow),
+            # the closing quote
+            (r'"', Literal.Scalar.Flow.Quote, '#pop'),
+        ],
+
+        # the beginning of a new line while scanning a plain scalar
+        'plain-scalar-in-block-context-new-line': [
+            # empty lines
+            (r'^[ ]+$', Text.Blank),
+            # line breaks
+            (r'\n+', Text.Break),
+            # document start and document end indicators
+            (r'^(?=---|\.\.\.)', something(Punctuation.Document), '#pop:3'),
+            # indentation spaces (we may leave the block line state here)
+            (r'^[ ]*', parse_plain_scalar_indent(Text.Indent), '#pop'),
+        ],
+
+        # a plain scalar in the block context
+        'plain-scalar-in-block-context': [
+            # the scalar ends with the ':' indicator
+            (r'[ ]*(?=:[ ]|:$)', something(Text.Blank), '#pop'),
+            # the scalar ends with whitespaces followed by a comment
+            (r'[ ]+(?=#)', Text.Blank, '#pop'),
+            # trailing whitespaces are ignored
+            (r'[ ]+$', Text.Blank),
+            # line breaks are ignored
+            (r'\n+', Text.Break, 'plain-scalar-in-block-context-new-line'),
+            # other whitespaces are a part of the value
+            (r'[ ]+', Literal.Scalar.Plain),
+            # regular non-whitespace characters
+            (r'(?::(?![ \t\n\r\f\v])|[^ \t\n\r\f\v:])+',
+                Literal.Scalar.Plain),
+        ],
+
+        # a plain scalar is the flow context
+        'plain-scalar-in-flow-context': [
+            # the scalar ends with an indicator character
+            (r'[ ]*(?=[,:?\[\]{}])', something(Text.Blank), '#pop'),
+            # the scalar ends with a comment
+            (r'[ ]+(?=#)', Text.Blank, '#pop'),
+            # leading and trailing whitespaces are ignored
+            (r'^[ ]+|[ ]+$', Text.Blank),
+            # line breaks are ignored
+            (r'\n+', Text.Break),
+            # other whitespaces are a part of the value
+            (r'[ ]+', Literal.Scalar.Plain),
+            # regular non-whitespace characters
+            (r'[^ \t\n\r\f\v,:?\[\]{}]+', Literal.Scalar.Plain),
+        ],
+
+    }
+
+    def get_tokens_unprocessed(self, text=None, context=None):
+        if context is None:
+            context = YAMLLexerContext(text, 0)
+        return super(YAMLLexer, self).get_tokens_unprocessed(text, context)
+
+
diff --git a/third_party/python/PyYAML/examples/yaml-highlight/yaml_hl.cfg b/third_party/python/PyYAML/examples/yaml-highlight/yaml_hl.cfg
new file mode 100644
index 0000000000..69bb847764
--- /dev/null
+++ b/third_party/python/PyYAML/examples/yaml-highlight/yaml_hl.cfg
@@ -0,0 +1,115 @@
+%YAML 1.1
+---
+
+ascii:
+
+    header: "\e[0;1;30;40m"
+
+    footer: "\e[0m"
+
+    tokens:
+        stream-start:
+        stream-end:
+        directive:              { start: "\e[35m", end: "\e[0;1;30;40m" }
+        document-start:         { start: "\e[35m", end: "\e[0;1;30;40m" }
+        document-end:           { start: "\e[35m", end: "\e[0;1;30;40m" }
+        block-sequence-start:
+        block-mapping-start:
+        block-end:
+        flow-sequence-start:    { start: "\e[33m", end: "\e[0;1;30;40m" }
+        flow-mapping-start:     { start: "\e[33m", end: "\e[0;1;30;40m" }
+        flow-sequence-end:      { start: "\e[33m", end: "\e[0;1;30;40m" }
+        flow-mapping-end:       { start: "\e[33m", end: "\e[0;1;30;40m" }
+        key:                    { start: "\e[33m", end: "\e[0;1;30;40m" }
+        value:                  { start: "\e[33m", end: "\e[0;1;30;40m" }
+        block-entry:            { start: "\e[33m", end: "\e[0;1;30;40m" }
+        flow-entry:             { start: "\e[33m", end: "\e[0;1;30;40m" }
+        alias:                  { start: "\e[32m", end: "\e[0;1;30;40m" }
+        anchor:                 { start: "\e[32m", end: "\e[0;1;30;40m" }
+        tag:                    { start: "\e[32m", end: "\e[0;1;30;40m" }
+        scalar:                 { start: "\e[36m", end: "\e[0;1;30;40m" }
+
+    replaces:
+        - "\r\n":   "\n"
+        - "\r":     "\n"
+        - "\n":     "\n"
+        - "\x85":   "\n"
+        - "\u2028": "\n"
+        - "\u2029": "\n"
+
+html: &html
+
+    tokens:
+        stream-start:
+        stream-end:
+        directive:              { start: <code class="directive_token">, end: </code> }
+        document-start:         { start: <code class="document_start_token">, end: </code> }
+        document-end:           { start: <code class="document_end_token">, end: </code> }
+        block-sequence-start:
+        block-mapping-start:
+        block-end:
+        flow-sequence-start:    { start: <code class="delimiter_token">, end: </code> }
+        flow-mapping-start:     { start: <code class="delimiter_token">, end: </code> }
+        flow-sequence-end:      { start: <code class="delimiter_token">, end: </code> }
+        flow-mapping-end:       { start: <code class="delimiter_token">, end: </code> }
+        key:                    { start: <code class="delimiter_token">, end: </code> }
+        value:                  { start: <code class="delimiter_token">, end: </code> }
+        block-entry:            { start: <code class="delimiter_token">, end: </code> }
+        flow-entry:             { start: <code class="delimiter_token">, end: </code> }
+        alias:                  { start: <code class="anchor_token">, end: </code> }
+        anchor:                 { start: <code class="anchor_token">, end: </code> }
+        tag:                    { start: <code class="tag_token">, end: </code> }
+        scalar:                 { start: <code class="scalar_token">, end: </code> }
+
+    events:
+        stream-start:   { start: <pre class="yaml_stream"> }
+        stream-end:     { end: </pre> }
+        document-start: { start: <span class="document"> }
+        document-end:   { end: </span> }
+        sequence-start: { start: <span class="sequence"> }
+        sequence-end:   { end: </span> }
+        mapping-start:  { start: <span class="mapping"> }
+        mapping-end:    { end: </span> }
+        scalar:         { start: <span class="scalar">, end: </span> }
+
+    replaces:
+        - "\r\n":   "\n"
+        - "\r":     "\n"
+        - "\n":     "\n"
+        - "\x85":   "\n"
+        - "\u2028": "\n"
+        - "\u2029": "\n"
+        - "&":      "&amp;"
+        - "<":      "&lt;"
+        - ">":      "&gt;"
+
+html-page:
+
+    header: |
+        <html>
+        <head>
+        <title>A YAML stream</title>
+        <style type="text/css">
+            .document { background: #FFF }
+            .sequence { background: #EEF }
+            .mapping { background: #EFE }
+            .scalar { background: #FEE }
+            .directive_token { color: #C0C }
+            .document_start_token { color: #C0C; font-weight: bold }
+            .document_end_token { color: #C0C; font-weight: bold }
+            .delimiter_token { color: #600; font-weight: bold }
+            .anchor_token { color: #090 }
+            .tag_token { color: #090 }
+            .scalar_token { color: #000 }
+            .yaml_stream { color: #999 }
+        </style>
+        <body>
+
+    footer: |
+        </body>
+        </html>
+
+    <<: *html
+
+
+# vim: ft=yaml
diff --git a/third_party/python/PyYAML/examples/yaml-highlight/yaml_hl.py b/third_party/python/PyYAML/examples/yaml-highlight/yaml_hl.py
new file mode 100755
index 0000000000..96e0ae7b1b
--- /dev/null
+++ b/third_party/python/PyYAML/examples/yaml-highlight/yaml_hl.py
@@ -0,0 +1,114 @@
+#!/usr/bin/python
+
+import yaml, codecs, sys, os.path, optparse
+
+class Style:
+
+    def __init__(self, header=None, footer=None,
+            tokens=None, events=None, replaces=None):
+        self.header = header
+        self.footer = footer
+        self.replaces = replaces
+        self.substitutions = {}
+        for domain, Class in [(tokens, 'Token'), (events, 'Event')]:
+            if not domain:
+                continue
+            for key in domain:
+                name = ''.join([part.capitalize() for part in key.split('-')])
+                cls = getattr(yaml, '%s%s' % (name, Class))
+                value = domain[key]
+                if not value:
+                    continue
+                start = value.get('start')
+                end = value.get('end')
+                if start:
+                    self.substitutions[cls, -1] = start
+                if end:
+                    self.substitutions[cls, +1] = end
+
+    def __setstate__(self, state):
+        self.__init__(**state)
+
+yaml.add_path_resolver(u'tag:yaml.org,2002:python/object:__main__.Style',
+        [None], dict)
+yaml.add_path_resolver(u'tag:yaml.org,2002:pairs',
+        [None, u'replaces'], list)
+
+class YAMLHighlight:
+
+    def __init__(self, options):
+        config = yaml.full_load(file(options.config, 'rb').read())
+        self.style = config[options.style]
+        if options.input:
+            self.input = file(options.input, 'rb')
+        else:
+            self.input = sys.stdin
+        if options.output:
+            self.output = file(options.output, 'wb')
+        else:
+            self.output = sys.stdout
+
+    def highlight(self):
+        input = self.input.read()
+        if input.startswith(codecs.BOM_UTF16_LE):
+            input = unicode(input, 'utf-16-le')
+        elif input.startswith(codecs.BOM_UTF16_BE):
+            input = unicode(input, 'utf-16-be')
+        else:
+            input = unicode(input, 'utf-8')
+        substitutions = self.style.substitutions
+        tokens = yaml.scan(input)
+        events = yaml.parse(input)
+        markers = []
+        number = 0
+        for token in tokens:
+            number += 1
+            if token.start_mark.index != token.end_mark.index:
+                cls = token.__class__
+                if (cls, -1) in substitutions:
+                    markers.append([token.start_mark.index, +2, number, substitutions[cls, -1]])
+                if (cls, +1) in substitutions:
+                    markers.append([token.end_mark.index, -2, number, substitutions[cls, +1]])
+        number = 0
+        for event in events:
+            number += 1
+            cls = event.__class__
+            if (cls, -1) in substitutions:
+                markers.append([event.start_mark.index, +1, number, substitutions[cls, -1]])
+            if (cls, +1) in substitutions:
+                markers.append([event.end_mark.index, -1, number, substitutions[cls, +1]])
+        markers.sort()
+        markers.reverse()
+        chunks = []
+        position = len(input)
+        for index, weight1, weight2, substitution in markers:
+            if index < position:
+                chunk = input[index:position]
+                for substring, replacement in self.style.replaces:
+                    chunk = chunk.replace(substring, replacement)
+                chunks.append(chunk)
+                position = index
+            chunks.append(substitution)
+        chunks.reverse()
+        result = u''.join(chunks)
+        if self.style.header:
+            self.output.write(self.style.header)
+        self.output.write(result.encode('utf-8'))
+        if self.style.footer:
+            self.output.write(self.style.footer)
+
+if __name__ == '__main__':
+    parser = optparse.OptionParser()
+    parser.add_option('-s', '--style', dest='style', default='ascii',
+            help="specify the highlighting style", metavar='STYLE')
+    parser.add_option('-c', '--config', dest='config',
+            default=os.path.join(os.path.dirname(sys.argv[0]), 'yaml_hl.cfg'),
+            help="set an alternative configuration file", metavar='CONFIG')
+    parser.add_option('-i', '--input', dest='input', default=None,
+            help="set the input file (default: stdin)", metavar='FILE')
+    parser.add_option('-o', '--output', dest='output', default=None,
+            help="set the output file (default: stdout)", metavar='FILE')
+    (options, args) = parser.parse_args()
+    hl = YAMLHighlight(options)
+    hl.highlight()
+