From 09d465c397165f99c37e9002a4e7b281111d2580 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Tue, 17 Jan 2023 17:13:18 -0500
Subject: [PATCH] Doc: fix a few oddly-spelled SGML ID attributes.

Avoid use of "_" in SGML IDs.  Awhile back that was actually
disallowed by the toolchain, as a consequence of which our convention
has been to use "-" instead.  Fix a couple of stragglers that are
particularly inconsistent with that convention and with related IDs.

This is just neatnik-ism, so no need for back-patch.

Discussion: https://postgr.es/m/769446.1673478332@sss.pgh.pa.us
---
 doc/src/sgml/config.sgml           | 2 +-
 doc/src/sgml/pgbuffercache.sgml    | 4 ++--
 doc/src/sgml/ref/pg_checksums.sgml | 2 +-
 doc/src/sgml/ref/prepare.sgml      | 2 +-
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index 77574e2d4e..89d53f2a64 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -6062,7 +6062,7 @@ SELECT * FROM parent WHERE key = 2400;
       </listitem>
      </varlistentry>
 
-     <varlistentry id="guc-plan-cache_mode" xreflabel="plan_cache_mode">
+     <varlistentry id="guc-plan-cache-mode" xreflabel="plan_cache_mode">
       <term><varname>plan_cache_mode</varname> (<type>enum</type>)
       <indexterm>
        <primary><varname>plan_cache_mode</varname> configuration parameter</primary>
diff --git a/doc/src/sgml/pgbuffercache.sgml b/doc/src/sgml/pgbuffercache.sgml
index fc101cf190..7b118f2030 100644
--- a/doc/src/sgml/pgbuffercache.sgml
+++ b/doc/src/sgml/pgbuffercache.sgml
@@ -183,10 +183,10 @@
   <title>The <function>pg_buffercache_summary()</function> Function</title>
 
   <para>
-   The definitions of the columns exposed by the function are shown in <xref linkend="pgbuffercache_summary-columns"/>.
+   The definitions of the columns exposed by the function are shown in <xref linkend="pgbuffercache-summary-columns"/>.
   </para>
 
-  <table id="pgbuffercache_summary-columns">
+  <table id="pgbuffercache-summary-columns">
    <title><function>pg_buffercache_summary()</function> Output Columns</title>
    <tgroup cols="1">
     <thead>
diff --git a/doc/src/sgml/ref/pg_checksums.sgml b/doc/src/sgml/ref/pg_checksums.sgml
index bab9501ce0..a3d0b0f0a3 100644
--- a/doc/src/sgml/ref/pg_checksums.sgml
+++ b/doc/src/sgml/ref/pg_checksums.sgml
@@ -33,7 +33,7 @@ PostgreSQL documentation
   </cmdsynopsis>
  </refsynopsisdiv>
 
- <refsect1 id="r1-app-pg_checksums-1">
+ <refsect1 id="r1-app-pgchecksums-1">
   <title>Description</title>
   <para>
    <application>pg_checksums</application> checks, enables or disables data
diff --git a/doc/src/sgml/ref/prepare.sgml b/doc/src/sgml/ref/prepare.sgml
index aae91946c7..f9e0cdc69a 100644
--- a/doc/src/sgml/ref/prepare.sgml
+++ b/doc/src/sgml/ref/prepare.sgml
@@ -139,7 +139,7 @@ PREPARE <replaceable class="parameter">name</replaceable> [ ( <replaceable class
   </para>
 
   <para>
-   By default (that is, when <xref linkend="guc-plan-cache_mode"/> is set
+   By default (that is, when <xref linkend="guc-plan-cache-mode"/> is set
    to <literal>auto</literal>), the server will automatically choose
    whether to use a generic or custom plan for a prepared statement that
    has parameters.  The current rule for this is that the first five