build the blog with nix

1 files changed, 0 insertions, 876 deletions

diff --git a/assets/viz/2/goog/i18n/bidi.js b/assets/viz/2/goog/i18n/bidi.js
deleted file mode 100644
index 695cfda..0000000
--- a/assets/viz/2/goog/i18n/bidi.js
+++ /dev/null
@@ -1,876 +0,0 @@
-// Copyright 2007 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview Utility functions for supporting Bidi issues.
- */
-
-
-/**
- * Namespace for bidi supporting functions.
- */
-goog.provide('goog.i18n.bidi');
-goog.provide('goog.i18n.bidi.Dir');
-goog.provide('goog.i18n.bidi.DirectionalString');
-goog.provide('goog.i18n.bidi.Format');
-
-
-/**
- * @define {boolean} FORCE_RTL forces the {@link goog.i18n.bidi.IS_RTL} constant
- * to say that the current locale is a RTL locale.  This should only be used
- * if you want to override the default behavior for deciding whether the
- * current locale is RTL or not.
- *
- * {@see goog.i18n.bidi.IS_RTL}
- */
-goog.define('goog.i18n.bidi.FORCE_RTL', false);
-
-
-/**
- * Constant that defines whether or not the current locale is a RTL locale.
- * If {@link goog.i18n.bidi.FORCE_RTL} is not true, this constant will default
- * to check that {@link goog.LOCALE} is one of a few major RTL locales.
- *
- * <p>This is designed to be a maximally efficient compile-time constant. For
- * example, for the default goog.LOCALE, compiling
- * "if (goog.i18n.bidi.IS_RTL) alert('rtl') else {}" should produce no code. It
- * is this design consideration that limits the implementation to only
- * supporting a few major RTL locales, as opposed to the broader repertoire of
- * something like goog.i18n.bidi.isRtlLanguage.
- *
- * <p>Since this constant refers to the directionality of the locale, it is up
- * to the caller to determine if this constant should also be used for the
- * direction of the UI.
- *
- * {@see goog.LOCALE}
- *
- * @type {boolean}
- *
- * TODO(user): write a test that checks that this is a compile-time constant.
- */
-goog.i18n.bidi.IS_RTL = goog.i18n.bidi.FORCE_RTL ||
-    ((goog.LOCALE.substring(0, 2).toLowerCase() == 'ar' ||
-      goog.LOCALE.substring(0, 2).toLowerCase() == 'fa' ||
-      goog.LOCALE.substring(0, 2).toLowerCase() == 'he' ||
-      goog.LOCALE.substring(0, 2).toLowerCase() == 'iw' ||
-      goog.LOCALE.substring(0, 2).toLowerCase() == 'ps' ||
-      goog.LOCALE.substring(0, 2).toLowerCase() == 'sd' ||
-      goog.LOCALE.substring(0, 2).toLowerCase() == 'ug' ||
-      goog.LOCALE.substring(0, 2).toLowerCase() == 'ur' ||
-      goog.LOCALE.substring(0, 2).toLowerCase() == 'yi') &&
-     (goog.LOCALE.length == 2 || goog.LOCALE.substring(2, 3) == '-' ||
-      goog.LOCALE.substring(2, 3) == '_')) ||
-    (goog.LOCALE.length >= 3 &&
-     goog.LOCALE.substring(0, 3).toLowerCase() == 'ckb' &&
-     (goog.LOCALE.length == 3 || goog.LOCALE.substring(3, 4) == '-' ||
-      goog.LOCALE.substring(3, 4) == '_'));
-
-
-/**
- * Unicode formatting characters and directionality string constants.
- * @enum {string}
- */
-goog.i18n.bidi.Format = {
-  /** Unicode "Left-To-Right Embedding" (LRE) character. */
-  LRE: '\u202A',
-  /** Unicode "Right-To-Left Embedding" (RLE) character. */
-  RLE: '\u202B',
-  /** Unicode "Pop Directional Formatting" (PDF) character. */
-  PDF: '\u202C',
-  /** Unicode "Left-To-Right Mark" (LRM) character. */
-  LRM: '\u200E',
-  /** Unicode "Right-To-Left Mark" (RLM) character. */
-  RLM: '\u200F'
-};
-
-
-/**
- * Directionality enum.
- * @enum {number}
- */
-goog.i18n.bidi.Dir = {
-  /**
-   * Left-to-right.
-   */
-  LTR: 1,
-
-  /**
-   * Right-to-left.
-   */
-  RTL: -1,
-
-  /**
-   * Neither left-to-right nor right-to-left.
-   */
-  NEUTRAL: 0
-};
-
-
-/**
- * 'right' string constant.
- * @type {string}
- */
-goog.i18n.bidi.RIGHT = 'right';
-
-
-/**
- * 'left' string constant.
- * @type {string}
- */
-goog.i18n.bidi.LEFT = 'left';
-
-
-/**
- * 'left' if locale is RTL, 'right' if not.
- * @type {string}
- */
-goog.i18n.bidi.I18N_RIGHT =
-    goog.i18n.bidi.IS_RTL ? goog.i18n.bidi.LEFT : goog.i18n.bidi.RIGHT;
-
-
-/**
- * 'right' if locale is RTL, 'left' if not.
- * @type {string}
- */
-goog.i18n.bidi.I18N_LEFT =
-    goog.i18n.bidi.IS_RTL ? goog.i18n.bidi.RIGHT : goog.i18n.bidi.LEFT;
-
-
-/**
- * Convert a directionality given in various formats to a goog.i18n.bidi.Dir
- * constant. Useful for interaction with different standards of directionality
- * representation.
- *
- * @param {goog.i18n.bidi.Dir|number|boolean|null} givenDir Directionality given
- *     in one of the following formats:
- *     1. A goog.i18n.bidi.Dir constant.
- *     2. A number (positive = LTR, negative = RTL, 0 = neutral).
- *     3. A boolean (true = RTL, false = LTR).
- *     4. A null for unknown directionality.
- * @param {boolean=} opt_noNeutral Whether a givenDir of zero or
- *     goog.i18n.bidi.Dir.NEUTRAL should be treated as null, i.e. unknown, in
- *     order to preserve legacy behavior.
- * @return {?goog.i18n.bidi.Dir} A goog.i18n.bidi.Dir constant matching the
- *     given directionality. If given null, returns null (i.e. unknown).
- */
-goog.i18n.bidi.toDir = function(givenDir, opt_noNeutral) {
-  if (typeof givenDir == 'number') {
-    // This includes the non-null goog.i18n.bidi.Dir case.
-    return givenDir > 0 ? goog.i18n.bidi.Dir.LTR : givenDir < 0 ?
-                          goog.i18n.bidi.Dir.RTL :
-                          opt_noNeutral ? null : goog.i18n.bidi.Dir.NEUTRAL;
-  } else if (givenDir == null) {
-    return null;
-  } else {
-    // Must be typeof givenDir == 'boolean'.
-    return givenDir ? goog.i18n.bidi.Dir.RTL : goog.i18n.bidi.Dir.LTR;
-  }
-};
-
-
-/**
- * A practical pattern to identify strong LTR characters. This pattern is not
- * theoretically correct according to the Unicode standard. It is simplified for
- * performance and small code size.
- * @type {string}
- * @private
- */
-goog.i18n.bidi.ltrChars_ =
-    'A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02B8\u0300-\u0590\u0800-\u1FFF' +
-    '\u200E\u2C00-\uFB1C\uFE00-\uFE6F\uFEFD-\uFFFF';
-
-
-/**
- * A practical pattern to identify strong RTL character. This pattern is not
- * theoretically correct according to the Unicode standard. It is simplified
- * for performance and small code size.
- * @type {string}
- * @private
- */
-goog.i18n.bidi.rtlChars_ =
-    '\u0591-\u06EF\u06FA-\u07FF\u200F\uFB1D-\uFDFF\uFE70-\uFEFC';
-
-
-/**
- * Simplified regular expression for an HTML tag (opening or closing) or an HTML
- * escape. We might want to skip over such expressions when estimating the text
- * directionality.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.htmlSkipReg_ = /<[^>]*>|&[^;]+;/g;
-
-
-/**
- * Returns the input text with spaces instead of HTML tags or HTML escapes, if
- * opt_isStripNeeded is true. Else returns the input as is.
- * Useful for text directionality estimation.
- * Note: the function should not be used in other contexts; it is not 100%
- * correct, but rather a good-enough implementation for directionality
- * estimation purposes.
- * @param {string} str The given string.
- * @param {boolean=} opt_isStripNeeded Whether to perform the stripping.
- *     Default: false (to retain consistency with calling functions).
- * @return {string} The given string cleaned of HTML tags / escapes.
- * @private
- */
-goog.i18n.bidi.stripHtmlIfNeeded_ = function(str, opt_isStripNeeded) {
-  return opt_isStripNeeded ? str.replace(goog.i18n.bidi.htmlSkipReg_, '') : str;
-};
-
-
-/**
- * Regular expression to check for RTL characters.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.rtlCharReg_ = new RegExp('[' + goog.i18n.bidi.rtlChars_ + ']');
-
-
-/**
- * Regular expression to check for LTR characters.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.ltrCharReg_ = new RegExp('[' + goog.i18n.bidi.ltrChars_ + ']');
-
-
-/**
- * Test whether the given string has any RTL characters in it.
- * @param {string} str The given string that need to be tested.
- * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.
- *     Default: false.
- * @return {boolean} Whether the string contains RTL characters.
- */
-goog.i18n.bidi.hasAnyRtl = function(str, opt_isHtml) {
-  return goog.i18n.bidi.rtlCharReg_.test(
-      goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));
-};
-
-
-/**
- * Test whether the given string has any RTL characters in it.
- * @param {string} str The given string that need to be tested.
- * @return {boolean} Whether the string contains RTL characters.
- * @deprecated Use hasAnyRtl.
- */
-goog.i18n.bidi.hasRtlChar = goog.i18n.bidi.hasAnyRtl;
-
-
-/**
- * Test whether the given string has any LTR characters in it.
- * @param {string} str The given string that need to be tested.
- * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.
- *     Default: false.
- * @return {boolean} Whether the string contains LTR characters.
- */
-goog.i18n.bidi.hasAnyLtr = function(str, opt_isHtml) {
-  return goog.i18n.bidi.ltrCharReg_.test(
-      goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));
-};
-
-
-/**
- * Regular expression pattern to check if the first character in the string
- * is LTR.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.ltrRe_ = new RegExp('^[' + goog.i18n.bidi.ltrChars_ + ']');
-
-
-/**
- * Regular expression pattern to check if the first character in the string
- * is RTL.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.rtlRe_ = new RegExp('^[' + goog.i18n.bidi.rtlChars_ + ']');
-
-
-/**
- * Check if the first character in the string is RTL or not.
- * @param {string} str The given string that need to be tested.
- * @return {boolean} Whether the first character in str is an RTL char.
- */
-goog.i18n.bidi.isRtlChar = function(str) {
-  return goog.i18n.bidi.rtlRe_.test(str);
-};
-
-
-/**
- * Check if the first character in the string is LTR or not.
- * @param {string} str The given string that need to be tested.
- * @return {boolean} Whether the first character in str is an LTR char.
- */
-goog.i18n.bidi.isLtrChar = function(str) {
-  return goog.i18n.bidi.ltrRe_.test(str);
-};
-
-
-/**
- * Check if the first character in the string is neutral or not.
- * @param {string} str The given string that need to be tested.
- * @return {boolean} Whether the first character in str is a neutral char.
- */
-goog.i18n.bidi.isNeutralChar = function(str) {
-  return !goog.i18n.bidi.isLtrChar(str) && !goog.i18n.bidi.isRtlChar(str);
-};
-
-
-/**
- * Regular expressions to check if a piece of text is of LTR directionality
- * on first character with strong directionality.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.ltrDirCheckRe_ = new RegExp(
-    '^[^' + goog.i18n.bidi.rtlChars_ + ']*[' + goog.i18n.bidi.ltrChars_ + ']');
-
-
-/**
- * Regular expressions to check if a piece of text is of RTL directionality
- * on first character with strong directionality.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.rtlDirCheckRe_ = new RegExp(
-    '^[^' + goog.i18n.bidi.ltrChars_ + ']*[' + goog.i18n.bidi.rtlChars_ + ']');
-
-
-/**
- * Check whether the first strongly directional character (if any) is RTL.
- * @param {string} str String being checked.
- * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.
- *     Default: false.
- * @return {boolean} Whether RTL directionality is detected using the first
- *     strongly-directional character method.
- */
-goog.i18n.bidi.startsWithRtl = function(str, opt_isHtml) {
-  return goog.i18n.bidi.rtlDirCheckRe_.test(
-      goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));
-};
-
-
-/**
- * Check whether the first strongly directional character (if any) is RTL.
- * @param {string} str String being checked.
- * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.
- *     Default: false.
- * @return {boolean} Whether RTL directionality is detected using the first
- *     strongly-directional character method.
- * @deprecated Use startsWithRtl.
- */
-goog.i18n.bidi.isRtlText = goog.i18n.bidi.startsWithRtl;
-
-
-/**
- * Check whether the first strongly directional character (if any) is LTR.
- * @param {string} str String being checked.
- * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.
- *     Default: false.
- * @return {boolean} Whether LTR directionality is detected using the first
- *     strongly-directional character method.
- */
-goog.i18n.bidi.startsWithLtr = function(str, opt_isHtml) {
-  return goog.i18n.bidi.ltrDirCheckRe_.test(
-      goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));
-};
-
-
-/**
- * Check whether the first strongly directional character (if any) is LTR.
- * @param {string} str String being checked.
- * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.
- *     Default: false.
- * @return {boolean} Whether LTR directionality is detected using the first
- *     strongly-directional character method.
- * @deprecated Use startsWithLtr.
- */
-goog.i18n.bidi.isLtrText = goog.i18n.bidi.startsWithLtr;
-
-
-/**
- * Regular expression to check if a string looks like something that must
- * always be LTR even in RTL text, e.g. a URL. When estimating the
- * directionality of text containing these, we treat these as weakly LTR,
- * like numbers.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.isRequiredLtrRe_ = /^http:\/\/.*/;
-
-
-/**
- * Check whether the input string either contains no strongly directional
- * characters or looks like a url.
- * @param {string} str String being checked.
- * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.
- *     Default: false.
- * @return {boolean} Whether neutral directionality is detected.
- */
-goog.i18n.bidi.isNeutralText = function(str, opt_isHtml) {
-  str = goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml);
-  return goog.i18n.bidi.isRequiredLtrRe_.test(str) ||
-      !goog.i18n.bidi.hasAnyLtr(str) && !goog.i18n.bidi.hasAnyRtl(str);
-};
-
-
-/**
- * Regular expressions to check if the last strongly-directional character in a
- * piece of text is LTR.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.ltrExitDirCheckRe_ = new RegExp(
-    '[' + goog.i18n.bidi.ltrChars_ + '][^' + goog.i18n.bidi.rtlChars_ + ']*$');
-
-
-/**
- * Regular expressions to check if the last strongly-directional character in a
- * piece of text is RTL.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.rtlExitDirCheckRe_ = new RegExp(
-    '[' + goog.i18n.bidi.rtlChars_ + '][^' + goog.i18n.bidi.ltrChars_ + ']*$');
-
-
-/**
- * Check if the exit directionality a piece of text is LTR, i.e. if the last
- * strongly-directional character in the string is LTR.
- * @param {string} str String being checked.
- * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.
- *     Default: false.
- * @return {boolean} Whether LTR exit directionality was detected.
- */
-goog.i18n.bidi.endsWithLtr = function(str, opt_isHtml) {
-  return goog.i18n.bidi.ltrExitDirCheckRe_.test(
-      goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));
-};
-
-
-/**
- * Check if the exit directionality a piece of text is LTR, i.e. if the last
- * strongly-directional character in the string is LTR.
- * @param {string} str String being checked.
- * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.
- *     Default: false.
- * @return {boolean} Whether LTR exit directionality was detected.
- * @deprecated Use endsWithLtr.
- */
-goog.i18n.bidi.isLtrExitText = goog.i18n.bidi.endsWithLtr;
-
-
-/**
- * Check if the exit directionality a piece of text is RTL, i.e. if the last
- * strongly-directional character in the string is RTL.
- * @param {string} str String being checked.
- * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.
- *     Default: false.
- * @return {boolean} Whether RTL exit directionality was detected.
- */
-goog.i18n.bidi.endsWithRtl = function(str, opt_isHtml) {
-  return goog.i18n.bidi.rtlExitDirCheckRe_.test(
-      goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));
-};
-
-
-/**
- * Check if the exit directionality a piece of text is RTL, i.e. if the last
- * strongly-directional character in the string is RTL.
- * @param {string} str String being checked.
- * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.
- *     Default: false.
- * @return {boolean} Whether RTL exit directionality was detected.
- * @deprecated Use endsWithRtl.
- */
-goog.i18n.bidi.isRtlExitText = goog.i18n.bidi.endsWithRtl;
-
-
-/**
- * A regular expression for matching right-to-left language codes.
- * See {@link #isRtlLanguage} for the design.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.rtlLocalesRe_ = new RegExp(
-    '^(ar|ckb|dv|he|iw|fa|nqo|ps|sd|ug|ur|yi|' +
-        '.*[-_](Arab|Hebr|Thaa|Nkoo|Tfng))' +
-        '(?!.*[-_](Latn|Cyrl)($|-|_))($|-|_)',
-    'i');
-
-
-/**
- * Check if a BCP 47 / III language code indicates an RTL language, i.e. either:
- * - a language code explicitly specifying one of the right-to-left scripts,
- *   e.g. "az-Arab", or<p>
- * - a language code specifying one of the languages normally written in a
- *   right-to-left script, e.g. "fa" (Farsi), except ones explicitly specifying
- *   Latin or Cyrillic script (which are the usual LTR alternatives).<p>
- * The list of right-to-left scripts appears in the 100-199 range in
- * http://www.unicode.org/iso15924/iso15924-num.html, of which Arabic and
- * Hebrew are by far the most widely used. We also recognize Thaana, N'Ko, and
- * Tifinagh, which also have significant modern usage. The rest (Syriac,
- * Samaritan, Mandaic, etc.) seem to have extremely limited or no modern usage
- * and are not recognized to save on code size.
- * The languages usually written in a right-to-left script are taken as those
- * with Suppress-Script: Hebr|Arab|Thaa|Nkoo|Tfng  in
- * http://www.iana.org/assignments/language-subtag-registry,
- * as well as Central (or Sorani) Kurdish (ckb), Sindhi (sd) and Uyghur (ug).
- * Other subtags of the language code, e.g. regions like EG (Egypt), are
- * ignored.
- * @param {string} lang BCP 47 (a.k.a III) language code.
- * @return {boolean} Whether the language code is an RTL language.
- */
-goog.i18n.bidi.isRtlLanguage = function(lang) {
-  return goog.i18n.bidi.rtlLocalesRe_.test(lang);
-};
-
-
-/**
- * Regular expression for bracket guard replacement in text.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.bracketGuardTextRe_ =
-    /(\(.*?\)+)|(\[.*?\]+)|(\{.*?\}+)|(<.*?>+)/g;
-
-
-/**
- * Apply bracket guard using LRM and RLM. This is to address the problem of
- * messy bracket display frequently happens in RTL layout.
- * This function works for plain text, not for HTML. In HTML, the opening
- * bracket might be in a different context than the closing bracket (such as
- * an attribute value).
- * @param {string} s The string that need to be processed.
- * @param {boolean=} opt_isRtlContext specifies default direction (usually
- *     direction of the UI).
- * @return {string} The processed string, with all bracket guarded.
- */
-goog.i18n.bidi.guardBracketInText = function(s, opt_isRtlContext) {
-  var useRtl = opt_isRtlContext === undefined ? goog.i18n.bidi.hasAnyRtl(s) :
-                                                opt_isRtlContext;
-  var mark = useRtl ? goog.i18n.bidi.Format.RLM : goog.i18n.bidi.Format.LRM;
-  return s.replace(goog.i18n.bidi.bracketGuardTextRe_, mark + '$&' + mark);
-};
-
-
-/**
- * Enforce the html snippet in RTL directionality regardless overall context.
- * If the html piece was enclosed by tag, dir will be applied to existing
- * tag, otherwise a span tag will be added as wrapper. For this reason, if
- * html snippet start with with tag, this tag must enclose the whole piece. If
- * the tag already has a dir specified, this new one will override existing
- * one in behavior (tested on FF and IE).
- * @param {string} html The string that need to be processed.
- * @return {string} The processed string, with directionality enforced to RTL.
- */
-goog.i18n.bidi.enforceRtlInHtml = function(html) {
-  if (html.charAt(0) == '<') {
-    return html.replace(/<\w+/, '$& dir=rtl');
-  }
-  // '\n' is important for FF so that it won't incorrectly merge span groups
-  return '\n<span dir=rtl>' + html + '</span>';
-};
-
-
-/**
- * Enforce RTL on both end of the given text piece using unicode BiDi formatting
- * characters RLE and PDF.
- * @param {string} text The piece of text that need to be wrapped.
- * @return {string} The wrapped string after process.
- */
-goog.i18n.bidi.enforceRtlInText = function(text) {
-  return goog.i18n.bidi.Format.RLE + text + goog.i18n.bidi.Format.PDF;
-};
-
-
-/**
- * Enforce the html snippet in RTL directionality regardless overall context.
- * If the html piece was enclosed by tag, dir will be applied to existing
- * tag, otherwise a span tag will be added as wrapper. For this reason, if
- * html snippet start with with tag, this tag must enclose the whole piece. If
- * the tag already has a dir specified, this new one will override existing
- * one in behavior (tested on FF and IE).
- * @param {string} html The string that need to be processed.
- * @return {string} The processed string, with directionality enforced to RTL.
- */
-goog.i18n.bidi.enforceLtrInHtml = function(html) {
-  if (html.charAt(0) == '<') {
-    return html.replace(/<\w+/, '$& dir=ltr');
-  }
-  // '\n' is important for FF so that it won't incorrectly merge span groups
-  return '\n<span dir=ltr>' + html + '</span>';
-};
-
-
-/**
- * Enforce LTR on both end of the given text piece using unicode BiDi formatting
- * characters LRE and PDF.
- * @param {string} text The piece of text that need to be wrapped.
- * @return {string} The wrapped string after process.
- */
-goog.i18n.bidi.enforceLtrInText = function(text) {
-  return goog.i18n.bidi.Format.LRE + text + goog.i18n.bidi.Format.PDF;
-};
-
-
-/**
- * Regular expression to find dimensions such as "padding: .3 0.4ex 5px 6;"
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.dimensionsRe_ =
-    /:\s*([.\d][.\w]*)\s+([.\d][.\w]*)\s+([.\d][.\w]*)\s+([.\d][.\w]*)/g;
-
-
-/**
- * Regular expression for left.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.leftRe_ = /left/gi;
-
-
-/**
- * Regular expression for right.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.rightRe_ = /right/gi;
-
-
-/**
- * Placeholder regular expression for swapping.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.tempRe_ = /%%%%/g;
-
-
-/**
- * Swap location parameters and 'left'/'right' in CSS specification. The
- * processed string will be suited for RTL layout. Though this function can
- * cover most cases, there are always exceptions. It is suggested to put
- * those exceptions in separate group of CSS string.
- * @param {string} cssStr CSS spefication string.
- * @return {string} Processed CSS specification string.
- */
-goog.i18n.bidi.mirrorCSS = function(cssStr) {
-  return cssStr
-      .
-      // reverse dimensions
-      replace(goog.i18n.bidi.dimensionsRe_, ':$1 $4 $3 $2')
-      .replace(goog.i18n.bidi.leftRe_, '%%%%')
-      .  // swap left and right
-      replace(goog.i18n.bidi.rightRe_, goog.i18n.bidi.LEFT)
-      .replace(goog.i18n.bidi.tempRe_, goog.i18n.bidi.RIGHT);
-};
-
-
-/**
- * Regular expression for hebrew double quote substitution, finding quote
- * directly after hebrew characters.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.doubleQuoteSubstituteRe_ = /([\u0591-\u05f2])"/g;
-
-
-/**
- * Regular expression for hebrew single quote substitution, finding quote
- * directly after hebrew characters.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.singleQuoteSubstituteRe_ = /([\u0591-\u05f2])'/g;
-
-
-/**
- * Replace the double and single quote directly after a Hebrew character with
- * GERESH and GERSHAYIM. In such case, most likely that's user intention.
- * @param {string} str String that need to be processed.
- * @return {string} Processed string with double/single quote replaced.
- */
-goog.i18n.bidi.normalizeHebrewQuote = function(str) {
-  return str.replace(goog.i18n.bidi.doubleQuoteSubstituteRe_, '$1\u05f4')
-      .replace(goog.i18n.bidi.singleQuoteSubstituteRe_, '$1\u05f3');
-};
-
-
-/**
- * Regular expression to split a string into "words" for directionality
- * estimation based on relative word counts.
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.wordSeparatorRe_ = /\s+/;
-
-
-/**
- * Regular expression to check if a string contains any numerals. Used to
- * differentiate between completely neutral strings and those containing
- * numbers, which are weakly LTR.
- *
- * Native Arabic digits (\u0660 - \u0669) are not included because although they
- * do flow left-to-right inside a number, this is the case even if the  overall
- * directionality is RTL, and a mathematical expression using these digits is
- * supposed to flow right-to-left overall, including unary plus and minus
- * appearing to the right of a number, and this does depend on the overall
- * directionality being RTL. The digits used in Farsi (\u06F0 - \u06F9), on the
- * other hand, are included, since Farsi math (including unary plus and minus)
- * does flow left-to-right.
- *
- * @type {RegExp}
- * @private
- */
-goog.i18n.bidi.hasNumeralsRe_ = /[\d\u06f0-\u06f9]/;
-
-
-/**
- * This constant controls threshold of RTL directionality.
- * @type {number}
- * @private
- */
-goog.i18n.bidi.rtlDetectionThreshold_ = 0.40;
-
-
-/**
- * Estimates the directionality of a string based on relative word counts.
- * If the number of RTL words is above a certain percentage of the total number
- * of strongly directional words, returns RTL.
- * Otherwise, if any words are strongly or weakly LTR, returns LTR.
- * Otherwise, returns UNKNOWN, which is used to mean "neutral".
- * Numbers are counted as weakly LTR.
- * @param {string} str The string to be checked.
- * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.
- *     Default: false.
- * @return {goog.i18n.bidi.Dir} Estimated overall directionality of {@code str}.
- */
-goog.i18n.bidi.estimateDirection = function(str, opt_isHtml) {
-  var rtlCount = 0;
-  var totalCount = 0;
-  var hasWeaklyLtr = false;
-  var tokens = goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml)
-                   .split(goog.i18n.bidi.wordSeparatorRe_);
-  for (var i = 0; i < tokens.length; i++) {
-    var token = tokens[i];
-    if (goog.i18n.bidi.startsWithRtl(token)) {
-      rtlCount++;
-      totalCount++;
-    } else if (goog.i18n.bidi.isRequiredLtrRe_.test(token)) {
-      hasWeaklyLtr = true;
-    } else if (goog.i18n.bidi.hasAnyLtr(token)) {
-      totalCount++;
-    } else if (goog.i18n.bidi.hasNumeralsRe_.test(token)) {
-      hasWeaklyLtr = true;
-    }
-  }
-
-  return totalCount == 0 ?
-      (hasWeaklyLtr ? goog.i18n.bidi.Dir.LTR : goog.i18n.bidi.Dir.NEUTRAL) :
-      (rtlCount / totalCount > goog.i18n.bidi.rtlDetectionThreshold_ ?
-           goog.i18n.bidi.Dir.RTL :
-           goog.i18n.bidi.Dir.LTR);
-};
-
-
-/**
- * Check the directionality of a piece of text, return true if the piece of
- * text should be laid out in RTL direction.
- * @param {string} str The piece of text that need to be detected.
- * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.
- *     Default: false.
- * @return {boolean} Whether this piece of text should be laid out in RTL.
- */
-goog.i18n.bidi.detectRtlDirectionality = function(str, opt_isHtml) {
-  return goog.i18n.bidi.estimateDirection(str, opt_isHtml) ==
-      goog.i18n.bidi.Dir.RTL;
-};
-
-
-/**
- * Sets text input element's directionality and text alignment based on a
- * given directionality. Does nothing if the given directionality is unknown or
- * neutral.
- * @param {Element} element Input field element to set directionality to.
- * @param {goog.i18n.bidi.Dir|number|boolean|null} dir Desired directionality,
- *     given in one of the following formats:
- *     1. A goog.i18n.bidi.Dir constant.
- *     2. A number (positive = LRT, negative = RTL, 0 = neutral).
- *     3. A boolean (true = RTL, false = LTR).
- *     4. A null for unknown directionality.
- */
-goog.i18n.bidi.setElementDirAndAlign = function(element, dir) {
-  if (element) {
-    dir = goog.i18n.bidi.toDir(dir);
-    if (dir) {
-      element.style.textAlign = dir == goog.i18n.bidi.Dir.RTL ?
-          goog.i18n.bidi.RIGHT :
-          goog.i18n.bidi.LEFT;
-      element.dir = dir == goog.i18n.bidi.Dir.RTL ? 'rtl' : 'ltr';
-    }
-  }
-};
-
-
-/**
- * Sets element dir based on estimated directionality of the given text.
- * @param {!Element} element
- * @param {string} text
- */
-goog.i18n.bidi.setElementDirByTextDirectionality = function(element, text) {
-  switch (goog.i18n.bidi.estimateDirection(text)) {
-    case (goog.i18n.bidi.Dir.LTR):
-      element.dir = 'ltr';
-      break;
-    case (goog.i18n.bidi.Dir.RTL):
-      element.dir = 'rtl';
-      break;
-    default:
-      // Default for no direction, inherit from document.
-      element.removeAttribute('dir');
-  }
-};
-
-
-
-/**
- * Strings that have an (optional) known direction.
- *
- * Implementations of this interface are string-like objects that carry an
- * attached direction, if known.
- * @interface
- */
-goog.i18n.bidi.DirectionalString = function() {};
-
-
-/**
- * Interface marker of the DirectionalString interface.
- *
- * This property can be used to determine at runtime whether or not an object
- * implements this interface.  All implementations of this interface set this
- * property to {@code true}.
- * @type {boolean}
- */
-goog.i18n.bidi.DirectionalString.prototype
-    .implementsGoogI18nBidiDirectionalString;
-
-
-/**
- * Retrieves this object's known direction (if any).
- * @return {?goog.i18n.bidi.Dir} The known direction. Null if unknown.
- */
-goog.i18n.bidi.DirectionalString.prototype.getDirection;