pg_basebackup: Remove short option -k

-k meant --no-verify-checksums, which is the opposite of what initdb
uses -k for.  After discussion, a short option does not seem necessary,
so just keep the long option.

Discussion: https://www.postgresql.org/message-id/flat/d510f8aa-19e1-d06e-7630-ad27f7441d68%402ndquadrant.com

doc/src/sgml/ref/pg_basebackup.sgml

@@ -486,6 +486,18 @@ PostgreSQL documentation
       </listitem>
      </varlistentry>
 
+     <varlistentry>
+      <term><option>-v</option></term>
+      <term><option>--verbose</option></term>
+      <listitem>
+       <para>
+        Enables verbose mode. Will output some extra steps during startup and
+        shutdown, as well as show the exact file name that is currently being
+        processed if progress reporting is also enabled.
+       </para>
+      </listitem>
+     </varlistentry>
+
      <varlistentry>
       <term><option>--no-slot</option></term>
       <listitem>
@@ -507,7 +519,6 @@ PostgreSQL documentation
      </varlistentry>
 
      <varlistentry>
-      <term><option>-k</option></term>
       <term><option>--no-verify-checksums</option></term>
       <listitem>
        <para>
@@ -515,25 +526,13 @@ PostgreSQL documentation
         the base backup is taken from.
        </para>
        <para>
-        By default, checksums are verified and checksum failures will result in
-        a non-zero exit status. However, the base backup will not be removed in
-        this case, as if the <literal>--no-clean</literal> option was used.
+        By default, checksums are verified and checksum failures will result
+        in a non-zero exit status. However, the base backup will not be
+        removed in such a case, as if the <option>--no-clean</option> option
+        had been used.
        </para>
       </listitem>
      </varlistentry>
-
-     <varlistentry>
-      <term><option>-v</option></term>
-      <term><option>--verbose</option></term>
-      <listitem>
-       <para>
-        Enables verbose mode. Will output some extra steps during startup and
-        shutdown, as well as show the exact file name that is currently being
-        processed if progress reporting is also enabled.
-       </para>
-      </listitem>
-     </varlistentry>
-
     </variablelist>
    </para>
 

src/bin/pg_basebackup/pg_basebackup.c

@@ -363,11 +363,11 @@ usage(void)
 	printf(_("  -N, --no-sync          do not wait for changes to be written safely to disk\n"));
 	printf(_("  -P, --progress         show progress information\n"));
 	printf(_("  -S, --slot=SLOTNAME    replication slot to use\n"));
-	printf(_("      --no-slot          prevent creation of temporary replication slot\n"));
-	printf(_("  -k, --no-verify-checksums\n"
-			 "                         do not verify checksums\n"));
 	printf(_("  -v, --verbose          output verbose messages\n"));
 	printf(_("  -V, --version          output version information, then exit\n"));
+	printf(_("      --no-slot          prevent creation of temporary replication slot\n"));
+	printf(_("      --no-verify-checksums\n"
+			 "                         do not verify checksums\n"));
 	printf(_("  -?, --help             show this help, then exit\n"));
 	printf(_("\nConnection options:\n"));
 	printf(_("  -d, --dbname=CONNSTR   connection string\n"));
@@ -2159,7 +2159,7 @@ main(int argc, char **argv)
 		{"progress", no_argument, NULL, 'P'},
 		{"waldir", required_argument, NULL, 1},
 		{"no-slot", no_argument, NULL, 2},
-		{"no-verify-checksums", no_argument, NULL, 'k'},
+		{"no-verify-checksums", no_argument, NULL, 3},
 		{NULL, 0, NULL, 0}
 	};
 	int			c;
@@ -2328,7 +2328,7 @@ main(int argc, char **argv)
 			case 'P':
 				showprogress = true;
 				break;
-			case 'k':
+			case 3:
 				verify_checksums = false;
 				break;
 			default:

src/bin/pg_basebackup/t/010_pg_basebackup.pl

@@ -552,7 +552,7 @@ rmtree("$tempdir/backup_corrupt3");
 
 # do not verify checksums, should return ok
 $node->command_ok(
-	[ 'pg_basebackup', '-D', "$tempdir/backup_corrupt4", '-k' ],
+	[ 'pg_basebackup', '-D', "$tempdir/backup_corrupt4", '--no-verify-checksums' ],
 	'pg_basebackup with -k does not report checksum mismatch');
 rmtree("$tempdir/backup_corrupt4");