Improve vertical spacing of documentation markup

diff --git a/doc/src/sgml/charset.sgml b/doc/src/sgml/charset.sgml
index ed844659967d45f4a2f45a4dc7740c75e11480b7..22721b105ff4d2a114e1c1465c8d9d18193c07f2 100644 (file)
--- a/doc/src/sgml/charset.sgml
+++ b/doc/src/sgml/charset.sgml
@@ -377,10 +377,13 @@ initdb --locale-provider=icu --icu-locale=en
     variants and customization options.
    
   
+
   
    ICU Locales
+
    
     ICU Locale Names
+
     
      The ICU format for the locale name is a 
      linkend="icu-language-tag">Language Tag.
@@ -412,16 +415,19 @@ NOTICE:  using standard form "de-DE" for locale "de_DE.utf8"
      linkend="icu-language-tag">language tag instead of relying on the
      transformation.
     
+
     
      A locale with no language name, or the special language name
      root, is transformed to have the language
      und ("undefined").
     
+
     
      ICU can transform most libc locale names, as well as some other formats,
      into language tags for easier transition to ICU. If a libc locale name is
      used in ICU, it may not have precisely the same behavior as in libc.
     
+
     
      If there is a problem interpreting the locale name, or if the locale name
      represents a language or region that ICU does not recognize, you will see
@@ -442,10 +448,12 @@ CREATE COLLATION
 
    
     Language Tag
+
     
      A language tag, defined in BCP 47, is a standardized identifier used to
      identify languages, regions, and other information about a locale.
     
+
     
      Basic language tags are simply
      language-region;
@@ -457,6 +465,7 @@ CREATE COLLATION
      ja-JP, de, or
      fr-CA.
     
+
     
      Collation settings may be included in the language tag to customize
      collation behavior. ICU allows extensive customization, such as
@@ -464,6 +473,7 @@ CREATE COLLATION
      treatment of digits within text; and many other options to satisfy a
      variety of uses.
     
+
     
      To include this additional collation information in a language tag,
      append -u, which indicates there are additional
@@ -477,6 +487,7 @@ CREATE COLLATION
      -value, which implies a
      value of true.
     
+
     
      For example, the language tag en-US-u-kn-ks-level2
      means the locale with the English language in the US region, with
@@ -500,6 +511,7 @@ SELECT 'N-45' < 'N-123' COLLATE mycollation5 as result;
 (1 row)
 
     
+
     
      See  for details and additional
      examples of using language tags with custom collation information for the
@@ -507,6 +519,7 @@ SELECT 'N-45' < 'N-123' COLLATE mycollation5 as result;
     
    
   
+
   
    Problems
 
@@ -1100,6 +1113,7 @@ CREATE COLLATION ignore_accents (provider = icu, locale = 'und-u-ks-level1-kc-tr
     
    
   
+
   
    ICU Custom Collations
 
@@ -1129,8 +1143,10 @@ SELECT 'w;x*y-z' = 'wxyz' COLLATE num_ignore_punct; -- true
     linkend="icu-collation-settings"/>, or see 
     linkend="icu-external-references"/> for more details.
    
+
    
     ICU Comparison Levels
+
     
      Comparison of two strings (collation) in ICU is determined by a
      multi-level process, where textual features are grouped into
@@ -1138,6 +1154,7 @@ SELECT 'w;x*y-z' = 'wxyz' COLLATE num_ignore_punct; -- true
      linkend="icu-collation-settings-table">collation settings. Higher
      levels correspond to finer textual features.
     
+
     
       shows which textual feature
      differences are considered significant when determining equality at the
@@ -1145,7 +1162,7 @@ SELECT 'w;x*y-z' = 'wxyz' COLLATE num_ignore_punct; -- true
      invisible separator, and as seen in the table, is ignored for at all
      levels of comparison less than identic.
     
-    
+
      
       ICU Collation Levels
       
@@ -1157,6 +1174,7 @@ SELECT 'w;x*y-z' = 'wxyz' COLLATE num_ignore_punct; -- true
        
        
        
+
        
         
          Level
@@ -1169,6 +1187,7 @@ SELECT 'w;x*y-z' = 'wxyz' COLLATE num_ignore_punct; -- true
          'y' = 'z'
         
        
+
        
         
          level1
@@ -1224,6 +1243,7 @@ SELECT 'w;x*y-z' = 'wxyz' COLLATE num_ignore_punct; -- true
       
      
 
+    
      At every level, even with full normalization off, basic normalization is
      performed. For example, 'á' may be composed of the
      code points U&'\0061\0301' or the single code
@@ -1233,9 +1253,9 @@ SELECT 'w;x*y-z' = 'wxyz' COLLATE num_ignore_punct; -- true
      created with deterministic set to
      true.
     
+
     
      Collation Level Examples
-     
 
 
 CREATE COLLATION level3 (provider = icu, deterministic = false, locale = 'und-u-ka-shifted-ks-level3');
@@ -1251,18 +1271,18 @@ SELECT 'x-y' = 'x_y' COLLATE level3; -- true
 SELECT 'x-y' = 'x_y' COLLATE level4; -- false
 
 
-     
     
    
 
    
     Collation Settings for an ICU Locale
+
     
       shows the available
      collation settings, which can be used as part of a language tag to
      customize a collation.
     
-    
+
      
       ICU Collation Settings
       
@@ -1270,6 +1290,7 @@ SELECT 'x-y' = 'x_y' COLLATE level4; -- false
        
        
        
+
        
         
          Key
@@ -1278,6 +1299,7 @@ SELECT 'x-y' = 'x_y' COLLATE level4; -- false
          Description
         
        
+
        
         
          co
@@ -1287,6 +1309,7 @@ SELECT 'x-y' = 'x_y' COLLATE level4; -- false
           Collation type. See  for additional options and details.
          
         
+
         
          ka
          noignore, shifted
@@ -1299,6 +1322,7 @@ SELECT 'x-y' = 'x_y' COLLATE level4; -- false
           character classes are ignored.
          
         
+
         
          kb
          true, false
@@ -1309,6 +1333,7 @@ SELECT 'x-y' = 'x_y' COLLATE level4; -- false
           before 'aé'.
          
         
+
         
          kc
          true, false
@@ -1325,6 +1350,7 @@ SELECT 'x-y' = 'x_y' COLLATE level4; -- false
           
          
         
+
         
          kf
          
@@ -1339,6 +1365,7 @@ SELECT 'x-y' = 'x_y' COLLATE level4; -- false
           the rules of the locale.
          
         
+
         
          kn
          true, false
@@ -1350,6 +1377,7 @@ SELECT 'x-y' = 'x_y' COLLATE level4; -- false
           'id-123'.
          
         
+
         
          kk
          true, false
@@ -1373,6 +1401,7 @@ SELECT 'x-y' = 'x_y' COLLATE level4; -- false
           
          
         
+
         
          kr
          
@@ -1398,6 +1427,7 @@ SELECT 'x-y' = 'x_y' COLLATE level4; -- false
           
          
         
+
         
          ks
          level1, level2, level3, level4, identic
@@ -1409,6 +1439,7 @@ SELECT 'x-y' = 'x_y' COLLATE level4; -- false
            for details.
          
         
+
         
          kv
          
@@ -1429,10 +1460,13 @@ SELECT 'x-y' = 'x_y' COLLATE level4; -- false
        
       
      
-      Defaults may depend on locale. The above table is not meant to be
-      complete. See  for additional
-      options and details.
+
+    
+     Defaults may depend on locale. The above table is not meant to be
+     complete. See  for additional
+     options and details.
     
+
     
      
       For many collation settings, you must create the collation with
@@ -1448,7 +1482,7 @@ SELECT 'x-y' = 'x_y' COLLATE level4; -- false
 
    
     Examples
-    
+
      
       
        CREATE COLLATION "de-u-co-phonebk-x-icu" (provider = icu, locale = 'de-u-co-phonebk');
@@ -1494,22 +1528,21 @@ SELECT 'x-y' = 'x_y' COLLATE level4; -- false
        
       
      
-    
    
 
    
     External References for ICU
+
     
      This section () is only a brief
      overview of ICU behavior and language tags. Refer to the following
      documents for technical details, additional options, and new behavior:
     
+
     
      
       
-       
-           url="https://www.unicode.org/reports/tr35/tr35-collation.html">Unicode
-       Technical Standard #35
+       Unicode Technical Standard #35
       
      
      
@@ -1519,8 +1552,7 @@ SELECT 'x-y' = 'x_y' COLLATE level4; -- false
      
      
       
-       CLDR
-       repository
+       CLDR repository
       
      
      




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