Don’t percent-encode URIs

Percent-encode URIs only when needed to avoid ambiguity
(by using %20 instead of a space), to pacify ‘make check_character_set’
(by using %E2%80%99 instead of ’ (U+2019 RIGHT SINGLE QUOTATION MARK),
or to pacify the web server itself (which requires percent encoding).

africa

@@ -576,8 +576,8 @@ Zone	Africa/Tripoli	0:52:44 -	LMT	1920
 # DST the coming summer...
 #
 # Some sources, in French:
-# http://www.defimedia.info/news/946/Rashid-Beebeejaun-:-%C2%AB-L%E2%80%99heure-d%E2%80%99%C3%A9t%C3%A9-ne-sera-pas-appliqu%C3%A9e-cette-ann%C3%A9e-%C2%BB
-# http://lexpress.mu/Story/3398~Beebeejaun---Les-objectifs-d-%C3%A9conomie-d-%C3%A9nergie-de-l-heure-d-%C3%A9t%C3%A9-ont-%C3%A9t%C3%A9-atteints-
+# http://www.defimedia.info/news/946/Rashid-Beebeejaun-:-«-L%E2%80%99heure-d%E2%80%99été-ne-sera-pas-appliquée-cette-année-»
+# http://lexpress.mu/Story/3398~Beebeejaun---Les-objectifs-d-économie-d-énergie-de-l-heure-d-été-ont-été-atteints-
 #
 # Our wrap-up:
 # https://www.timeanddate.com/news/time/mauritius-dst-will-not-repeat.html
@@ -708,7 +708,7 @@ Zone Indian/Mauritius	3:50:00 -	LMT	1907 # Port Louis
 # More articles in the press
 # https://www.yabiladi.com/articles/details/5058/secret-l-heure-d-ete-maroc-leve.html
 # http://www.lematin.ma/Actualite/Express/Article.asp?id=148923
-# http://www.lavieeco.com/actualite/Le-Maroc-passe-sur-GMT%2B1-a-partir-de-dim
+# http://www.lavieeco.com/actualite/Le-Maroc-passe-sur-GMT+1-a-partir-de-dim
 
 # From Petr Machata (2011-03-30):
 # They have it written in English here:
@@ -723,7 +723,7 @@ Zone Indian/Mauritius	3:50:00 -	LMT	1907 # Port Louis
 # According to Infomédiaire web site from Morocco (infomediaire.ma),
 # on March 9, 2012, (in French) Heure légale:
 # Le Maroc adopte officiellement l'heure d'été
-# http://www.infomediaire.ma/news/maroc/heure-l%C3%A9gale-le-maroc-adopte-officiellement-lheure-d%C3%A9t%C3%A9
+# http://www.infomediaire.ma/news/maroc/heure-légale-le-maroc-adopte-officiellement-lheure-dété
 # Governing Council adopted draft decree, that Morocco DST starts on
 # the last Sunday of March (March 25, 2012) and ends on
 # last Sunday of September (September 30, 2012)
@@ -1205,7 +1205,7 @@ Zone	Africa/Windhoek	1:08:24 -	LMT	1892 Feb 8
 # From P Chan (2020-12-03):
 # GMT was adopted as the standard time of Lagos on 1905-07-01.
 # Lagos Weekly Record, 1905-06-24, p 3
-# http://ddsnext.crl.edu/titles/31558#?c=0&m=668&s=0&cv=2&r=0&xywh=1446%2C5221%2C1931%2C1235
+# http://ddsnext.crl.edu/titles/31558#?c=0&m=668&s=0&cv=2&r=0&xywh=1446,5221,1931,1235
 # says "It is officially notified that on and after the 1st of July 1905
 # Greenwich Mean Solar Time will be adopted thought the Colony and
 # Protectorate, and that it will be necessary to put all clocks 13 minutes and
@@ -1213,7 +1213,7 @@ Zone	Africa/Windhoek	1:08:24 -	LMT	1892 Feb 8
 #
 # It seemed that Lagos returned to LMT on 1908-07-01.
 # [The Lagos Standard], 1908-07-01, p 5
-# http://ddsnext.crl.edu/titles/31556#?c=0&m=78&s=0&cv=4&r=0&xywh=-92%2C3590%2C3944%2C2523
+# http://ddsnext.crl.edu/titles/31556#?c=0&m=78&s=0&cv=4&r=0&xywh=-92,3590,3944,2523
 # says "Scarcely have the people become accustomed to this new time, when
 # another official notice has now appeared announcing that from and after the
 # 1st July next, return will be made to local mean time."
@@ -1243,7 +1243,7 @@ Zone	Africa/Windhoek	1:08:24 -	LMT	1892 Feb 8
 # The Lagos Weekly Record, 1919-09-20, p 3 details discussion on the first
 # reading of this Bill by the Legislative Council of the Colony of Nigeria on
 # Thursday 1919-08-28:
-# http://ddsnext.crl.edu/titles/31558?terms&item_id=303484#?m=1118&c=1&s=0&cv=2&r=0&xywh=1261%2C3408%2C2994%2C1915
+# http://ddsnext.crl.edu/titles/31558?terms&item_id=303484#?m=1118&c=1&s=0&cv=2&r=0&xywh=1261,3408,2994,1915
 # "The proposal is that the Globe should be divided into twelve zones East and
 # West of Greenwich, of one hour each, Nigeria falling into the zone with a
 # standard of one hour fast on Greenwich Mean Time.  Nigeria standard time is

asia

@@ -2954,7 +2954,7 @@ Zone	Asia/Kathmandu	5:41:16 -	LMT	1920
 # 9pm and moving clocks forward by one hour for the next three months. ...."
 #
 # http://www.worldtimezone.com/dst_news/dst_news_pakistan01.html
-# http://www.dailytimes.com.pk/default.asp?page=2008%5C05%5C15%5Cstory_15-5-2008_pg1_4
+# http://www.dailytimes.com.pk/default.asp?page=2008\05\15\story_15-5-2008_pg1_4
 
 # From Arthur David Olson (2008-05-19):
 # XXX--midnight transitions is a guess; 2008 only is a guess.
@@ -3277,7 +3277,7 @@ Zone	Asia/Karachi	4:28:12 -	LMT	1907
 # Some of many sources in Arabic:
 # http://www.samanews.com/index.php?act=Show&id=122638
 #
-# http://safa.ps/details/news/74352/%D8%A8%D8%AF%D8%A1-%D8%A7%D9%84%D8%AA%D9%88%D9%82%D9%8A%D8%AA-%D8%A7%D9%84%D8%B5%D9%8A%D9%81%D9%8A-%D8%A8%D8%A7%D9%84%D8%B6%D9%81%D8%A9-%D9%88%D8%BA%D8%B2%D8%A9-%D9%84%D9%8A%D9%84%D8%A9-%D8%A7%D9%84%D8%AC%D9%85%D8%B9%D8%A9.html
+# http://safa.ps/details/news/74352/بدء-التوقيت-الصيفي-بالضفة-وغزة-ليلة-الجمعة.html
 #
 # Our brief summary:
 # https://www.timeanddate.com/news/time/gaza-west-bank-dst-2012.html
@@ -3287,7 +3287,7 @@ Zone	Asia/Karachi	4:28:12 -	LMT	1907
 # time from midnight on Friday, March 29, 2013" (translated).
 # [These are in Arabic and are for Gaza and for Ramallah, respectively.]
 # http://www.samanews.com/index.php?act=Show&id=154120
-# http://safa.ps/details/news/99844/%D8%B1%D8%A7%D9%85-%D8%A7%D9%84%D9%84%D9%87-%D8%A8%D8%AF%D8%A1-%D8%A7%D9%84%D8%AA%D9%88%D9%82%D9%8A%D8%AA-%D8%A7%D9%84%D8%B5%D9%8A%D9%81%D9%8A-29-%D8%A7%D9%84%D8%AC%D8%A7%D8%B1%D9%8A.html
+# http://safa.ps/details/news/99844/رام-الله-بدء-التوقيت-الصيفي-29-الجاري.html
 
 # From Steffen Thorsen (2013-09-24):
 # The Gaza and West Bank are ending DST Thursday at midnight

australasia

@@ -323,7 +323,7 @@ Zone Antarctica/Macquarie 0	-	-00	1899 Nov
 
 # From Steffen Thorsen (2013-01-10):
 # Fiji will end DST on 2014-01-19 02:00:
-# http://www.fiji.gov.fj/Media-Center/Press-Releases/DAYLIGHT-SAVINGS-TO-END-THIS-MONTH-%281%29.aspx
+# http://www.fiji.gov.fj/Media-Center/Press-Releases/DAYLIGHT-SAVINGS-TO-END-THIS-MONTH-(1).aspx
 
 # From Ken Rylander (2014-10-20):
 # DST will start Nov. 2 this year.
@@ -723,7 +723,7 @@ Zone Pacific/Pago_Pago	 12:37:12 -	LMT	1892 Jul  5
 #
 # Samoa's Daylight Saving Time Act 2009 is available here, but does not
 # contain any dates:
-# http://www.parliament.gov.ws/documents/acts/Daylight%20Saving%20Act%20%202009%20%28English%29%20-%20Final%207-7-091.pdf
+# http://www.parliament.gov.ws/documents/acts/Daylight%20Saving%20Act%20%202009%20(English)%20-%20Final%207-7-091.pdf
 
 # From Laupue Raymond Hughes (2010-10-07):
 # Please see

europe

@@ -2246,7 +2246,7 @@ Zone Europe/Bucharest	1:44:24 -	LMT	1891 Oct
 # the State Duma has approved ... the draft bill on returning to
 # winter time standard and return Russia 11 time zones.  The new
 # regulations will come into effect on October 26, 2014 at 02:00 ...
-# http://asozd2.duma.gov.ru/main.nsf/%28Spravka%29?OpenAgent&RN=431985-6&02
+# http://asozd2.duma.gov.ru/main.nsf/(Spravka)?OpenAgent&RN=431985-6&02
 # Here is a link where we put together table (based on approved Bill N
 # 431985-6) with proposed 11 Russian time zones and corresponding
 # areas/cities/administrative centers in the Russian Federation (in English):

northamerica

@@ -3059,7 +3059,7 @@ Zone America/Costa_Rica	-5:36:13 -	LMT	1890        # San José
 #
 # He supplied these references:
 #
-# http://www.prensalatina.com.mx/article.asp?ID=%7B4CC32C1B-A9F7-42FB-8A07-8631AFC923AF%7D&language=ES
+# http://www.prensalatina.com.mx/article.asp?ID={4CC32C1B-A9F7-42FB-8A07-8631AFC923AF}&language=ES
 # http://actualidad.terra.es/sociedad/articulo/cuba_llama_ahorrar_energia_cambio_1957044.htm
 #
 # From Alex Krivenyshev (2007-10-25):

tz-link.html

@@ -411,7 +411,7 @@ running the command <code>make rearguard_tarballs</code> and compiling
 from the resulting tarballs instead.</p>
 <ul>
 <li><a href="https://sourceforge.net/projects/vzic/">Vzic</a> is a <a
-href="https://en.wikipedia.org/wiki/C_%28programming_language%29">C</a>
+href="https://en.wikipedia.org/wiki/C_(programming_language)">C</a>
 program that compiles
 <code><abbr>tz</abbr></code> source into iCalendar-compatible VTIMEZONE files.
 Vzic is freely
@@ -436,7 +436,7 @@ License. DateTime::TimeZone also contains a script
 transition in the <code><abbr>tz</abbr></code> database.</li>
 <li>The <a href="https://howardhinnant.github.io/date/tz.html">Time Zone
 Database Parser</a> is a
-<a href="https://en.wikipedia.org/wiki/C%2B%2B">C++</a> parser and
+<a href="https://en.wikipedia.org/wiki/C++">C++</a> parser and
 runtime library with <a
 href="https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0355r7.html">API</a>
 adopted by
@@ -446,7 +446,7 @@ It is freely available under the
 <abbr title="Massachusetts Institute of Technology">MIT</abbr> license.</li>
 <li><a id="ICU" href="https://icu.unicode.org">International Components for
 Unicode (<abbr>ICU</abbr>)</a> contains C/C++ and <a
-href="https://en.wikipedia.org/wiki/Java_%28programming_language%29">Java</a>
+href="https://en.wikipedia.org/wiki/Java_(programming_language)">Java</a>
 libraries for internationalization that
 has a compiler from <code><abbr>tz</abbr></code> source
 and from <abbr title="Common Locale Data Repository">CLDR</abbr> data