Language fixes for docs related to opclass options

Discussion: https://postgr.es/m/20200620232145.GB17995%40telsasoft.com
Author: Justin Pryzby
Backpatch-through: 13

doc/src/sgml/brin.sgml

@@ -562,7 +562,7 @@ typedef struct BrinOpcInfo
    </varlistentry>
   </variablelist>
 
-  Optionally, an operator class for <acronym>BRIN</acronym> can supply the
+  An operator class for <acronym>BRIN</acronym> can optionally specify the
   following method:
 
   <variablelist>
@@ -570,22 +570,22 @@ typedef struct BrinOpcInfo
      <term><function>void options(local_relopts *relopts)</function></term>
      <listitem>
       <para>
-       Defines set of user-visible parameters that control operator class
+       Defines a set of user-visible parameters that control operator class
        behavior.
       </para>
 
       <para>
-       The <function>options</function> function has given pointer to
+       The <function>options</function> function is passed a pointer to a
        <replaceable>local_relopts</replaceable> struct, which needs to be
        filled with a set of operator class specific options.  The options
-       can be accessed from other support functions using
+       can be accessed from other support functions using the
        <literal>PG_HAS_OPCLASS_OPTIONS()</literal> and
        <literal>PG_GET_OPCLASS_OPTIONS()</literal> macros.
       </para>
 
       <para>
-       Since both key extraction for indexed value and representation of the
+       Since both key extraction of indexed values and representation of the
-       key in <acronym>GIN</acronym> are flexible, it may depends on
+       key in <acronym>GIN</acronym> are flexible, they may depend on
        user-specified parameters.
       </para>
      </listitem>

doc/src/sgml/btree.sgml

@@ -557,7 +557,7 @@ equalimage(<replaceable>opcintype</replaceable> <type>oid</type>) returns bool
      Optionally, a B-tree operator family may provide
      <function>options</function> (<quote>operator class specific
      options</quote>) support functions, registered under support
-     function number 5.  These functions define set of user-visible
+     function number 5.  These functions define a set of user-visible
      parameters that control operator class behavior.
     </para>
     <para>
@@ -566,19 +566,19 @@ equalimage(<replaceable>opcintype</replaceable> <type>oid</type>) returns bool
 <synopsis>
 options(<replaceable>relopts</replaceable> <type>local_relopts *</type>) returns void
 </synopsis>
-     The function has given pointer to <replaceable>local_relopts</replaceable>
+     The function is passed a pointer to a <replaceable>local_relopts</replaceable>
      struct, which needs to be filled with a set of operator class
      specific options.  The options can be accessed from other support
-     functions using <literal>PG_HAS_OPCLASS_OPTIONS()</literal> and
+     functions using the <literal>PG_HAS_OPCLASS_OPTIONS()</literal> and
      <literal>PG_GET_OPCLASS_OPTIONS()</literal> macros.
     </para>
     <para>
-     Currently, no B-Tree operator class has <function>options</function>
+     Currently, no B-Tree operator class has an <function>options</function>
      support function.  B-tree doesn't allow flexible representation of keys
      like GiST, SP-GiST, GIN and BRIN do.  So, <function>options</function>
-     probably doesn't have much usage in current shape of B-tree index
+     probably doesn't have much application in the current B-tree index
      access method.  Nevertheless, this support function was added to B-tree
-     for uniformity, and probably it will found its usage during further
+     for uniformity, and will probably find uses during further
      evolution of B-tree in <productname>PostgreSQL</productname>.
     </para>
    </listitem>

doc/src/sgml/gin.sgml

@@ -411,17 +411,17 @@
       </para>
 
       <para>
-       The <function>options</function> function has given pointer to
+       The <function>options</function> function is passed a pointer to a
        <replaceable>local_relopts</replaceable> struct, which needs to be
-       filled with s set of operator class specific options.  The options
+       filled with a set of operator class specific options.  The options
-       can be accessed from other support functions using
+       can be accessed from other support functions using the
        <literal>PG_HAS_OPCLASS_OPTIONS()</literal> and
        <literal>PG_GET_OPCLASS_OPTIONS()</literal> macros.
       </para>
 
       <para>
-       Since both key extraction for indexed value and representation of the
+       Since both key extraction of indexed values and representation of the
-       key in <acronym>GIN</acronym> are flexible, it may depends on
+       key in <acronym>GIN</acronym> are flexible, they may depend on
        user-specified parameters.
       </para>
      </listitem>

doc/src/sgml/gist.sgml

@@ -946,7 +946,7 @@ my_fetch(PG_FUNCTION_ARGS)
      <term><function>options</function></term>
      <listitem>
       <para>
-       Allows defintion of user-visible parameters that control operator
+       Allows definition of user-visible parameters that control operator
        class behavior.
       </para>
 
@@ -962,16 +962,16 @@ LANGUAGE C STRICT;
       </para>
 
       <para>
-       The function has given pointer to <replaceable>local_relopts</replaceable>
+       The function is passed a pointer to a <replaceable>local_relopts</replaceable>
        struct, which needs to be filled with a set of operator class
        specific options.  The options can be accessed from other support
-       functions using <literal>PG_HAS_OPCLASS_OPTIONS()</literal> and
+       functions using the <literal>PG_HAS_OPCLASS_OPTIONS()</literal> and
        <literal>PG_GET_OPCLASS_OPTIONS()</literal> macros.
       </para>
 
        <para>
-        The sample implementation of my_option() and parameters usage
+        An example implementation of my_options() and parameters use
-        in the another support function are given below:
+        from other support functions are given below:
 
 <programlisting>
 typedef enum MyEnumType
@@ -990,7 +990,7 @@ typedef struct
     int     str_param;  /* string parameter */
 } MyOptionsStruct;
 
-/* String representations for enum values */
+/* String representation of enum values */
 static relopt_enum_elt_def myEnumValues[] =
 {
     {"on", MY_ENUM_ON},
@@ -1002,7 +1002,7 @@ static relopt_enum_elt_def myEnumValues[] =
 static char *str_param_default = "default";
 
 /*
- * Sample validatior: checks that string is not longer than 8 bytes.
+ * Sample validator: checks that string is not longer than 8 bytes.
  */
 static void 
 validate_my_string_relopt(const char *value)
@@ -1090,8 +1090,8 @@ my_compress(PG_FUNCTION_ARGS)
 
       <para>
        Since the representation of the key in <acronym>GiST</acronym> is
-       flexible, it may depends on user-specified parameters.  For instace,
+       flexible, it may depend on user-specified parameters.  For instance,
-       the length of key signature may be such parameter.  See
+       the length of key signature may be specified.  See
        <literal>gtsvector_options()</literal> for example.
       </para>
      </listitem>

doc/src/sgml/spgist.sgml

@@ -290,13 +290,13 @@
   values for the support method, while the second argument is a pointer to a
   C struct where output values must be placed.  Four of the mandatory methods just
   return <type>void</type>, since all their results appear in the output struct; but
-  <function>leaf_consistent</function> additionally returns a <type>boolean</type> result.
+  <function>leaf_consistent</function> returns a <type>boolean</type> result.
   The methods must not modify any fields of their input structs.  In all
   cases, the output struct is initialized to zeroes before calling the
   user-defined method.  The optional sixth method <function>compress</function>
-  accepts datum to be indexed as the only argument and returns a value suitable
+  accepts a <type>datum</type> to be indexed as the only argument and returns a value suitable
   for physical storage in a leaf tuple.  The optional seventh method
-  <function>options</function> accepts internal pointer to a C struct, where
+  <function>options</function> accepts an <type>internal</type> pointer to a C struct, where
   opclass-specific parameters should be placed, and returns <type>void</type>.
  </para>
 
@@ -897,16 +897,16 @@ LANGUAGE C STRICT;
       </para>
 
       <para>
-       The function has given pointer to <replaceable>local_relopts</replaceable>
+       The function is passed a pointer to a <replaceable>local_relopts</replaceable>
        struct, which needs to be filled with a set of operator class
        specific options.  The options can be accessed from other support
-       functions using <literal>PG_HAS_OPCLASS_OPTIONS()</literal> and
+       functions using the <literal>PG_HAS_OPCLASS_OPTIONS()</literal> and
        <literal>PG_GET_OPCLASS_OPTIONS()</literal> macros.
       </para>
 
       <para>
        Since the representation of the key in <acronym>SP-GiST</acronym> is
-       flexible, it may depends on user-specified parameters.
+       flexible, it may depend on user-specified parameters.
       </para>
      </listitem>
     </varlistentry>

doc/src/sgml/xindex.sgml

@@ -410,9 +410,9 @@
   </para>
 
   <para>
-   Additionally, some opclasses allow user to set specific parameters, which
+   Additionally, some opclasses allow users to specify parameters which
-   controls its behavior.  Each builtin index access method have optional
+   control their behavior.  Each builtin index access method has an optional
-   <function>options</function> support function, which defines set of
+   <function>options</function> support function, which defines a set of
    opclass-specific parameters.
   </para>
 
@@ -459,7 +459,7 @@
       </row>
       <row>
        <entry>
-        Defines set of options that are specific for this operator class
+        Defines a set of options that are specific to this operator class
         (optional)
        </entry>
        <entry>5</entry>
@@ -501,7 +501,7 @@
       </row>
       <row>
        <entry>
-        Defines set of options that are specific for this operator class
+        Defines a set of options that are specific to this operator class
         (optional)
        </entry>
        <entry>3</entry>
@@ -584,7 +584,7 @@
       <row>
        <entry><function>options</function></entry>
        <entry>
-        Defines set of options that are specific for this operator class
+        Defines a set of options that are specific to this operator class
         (optional)
        </entry>
        <entry>10</entry>
@@ -643,7 +643,7 @@
       <row>
        <entry><function>options</function></entry>
        <entry>
-        Defines set of options that are specific for this operator class
+        Defines a set of options that are specific to this operator class
         (optional)
        </entry>
        <entry>6</entry>
@@ -720,7 +720,7 @@
       <row>
        <entry><function>options</function></entry>
        <entry>
-        Defines set of options that are specific for this operator class
+        Defines a set of options that are specific to this operator class
         (optional)
        </entry>
        <entry>7</entry>
@@ -778,7 +778,7 @@
       <row>
        <entry><function>options</function></entry>
        <entry>
-        Defines set of options that are specific for this operator class
+        Defines a set of options that are specific to this operator class
         (optional)
        </entry>
        <entry>5</entry>