Review program help output for wording and formatting

src/bin/pg_basebackup/pg_receivexlog.c

@@ -67,7 +67,7 @@ usage(void)
 	printf(_("  %s [OPTION]...\n"), progname);
 	printf(_("\nOptions:\n"));
 	printf(_("  -D, --directory=DIR    receive transaction log files into this directory\n"));
-	printf(_("      --if-not-exists    do not treat naming conflicts as an error when creating a slot\n"));
+	printf(_("      --if-not-exists    do not error if slot already exists when creating a slot\n"));
 	printf(_("  -n, --no-loop          do not loop on connection lost\n"));
 	printf(_("  -s, --status-interval=SECS\n"
 			 "                         time between status packets sent to server (default: %d)\n"), (standby_message_timeout / 1000));

src/bin/pg_basebackup/pg_recvlogical.c

@@ -76,7 +76,7 @@ usage(void)
 	printf(_("  -f, --file=FILE        receive log into this file, - for stdout\n"));
 	printf(_("  -F  --fsync-interval=SECS\n"
 			 "                         time between fsyncs to the output file (default: %d)\n"), (fsync_interval / 1000));
-	printf(_("      --if-not-exists    do not treat naming conflicts as an error when creating a slot\n"));
+	printf(_("      --if-not-exists    do not error if slot already exists when creating a slot\n"));
 	printf(_("  -I, --startpos=LSN     where in an existing slot should the streaming start\n"));
 	printf(_("  -n, --no-loop          do not loop on connection lost\n"));
 	printf(_("  -o, --option=NAME[=VALUE]\n"

src/bin/pg_controldata/pg_controldata.c

@@ -34,8 +34,9 @@ usage(const char *progname)
 {
 	printf(_("%s displays control information of a PostgreSQL database cluster.\n\n"), progname);
 	printf(_("Usage:\n"));
-	printf(_("  %s [OPTION] [[-D] DATADIR]\n"), progname);
+	printf(_("  %s [OPTION] [DATADIR]\n"), progname);
 	printf(_("\nOptions:\n"));
+	printf(_(" [-D] DATADIR    data directory\n"));
 	printf(_("  -V, --version  output version information, then exit\n"));
 	printf(_("  -?, --help     show this help, then exit\n"));
 	printf(_("\nIf no data directory (DATADIR) is specified, "

src/bin/pg_dump/pg_dump.c

@@ -904,7 +904,8 @@ help(const char *progname)
 	printf(_("  --column-inserts             dump data as INSERT commands with column names\n"));
 	printf(_("  --disable-dollar-quoting     disable dollar quoting, use SQL standard quoting\n"));
 	printf(_("  --disable-triggers           disable triggers during data-only restore\n"));
-	printf(_("  --enable-row-security        enable row level security\n"));
+	printf(_("  --enable-row-security        enable row security (dump only content user has\n"
+			 "                               access to)\n"));
 	printf(_("  --exclude-table-data=TABLE   do NOT dump data for the named table(s)\n"));
 	printf(_("  --if-exists                  use IF EXISTS when dropping objects\n"));
 	printf(_("  --inserts                    dump data as INSERT commands, rather than COPY\n"));

src/bin/pg_dump/pg_restore.c

@@ -463,7 +463,7 @@ usage(const char *progname)
 	printf(_("  -x, --no-privileges          skip restoration of access privileges (grant/revoke)\n"));
 	printf(_("  -1, --single-transaction     restore as a single transaction\n"));
 	printf(_("  --disable-triggers           disable triggers during data-only restore\n"));
-	printf(_("  --enable-row-security        enable row level security\n"));
+	printf(_("  --enable-row-security        enable row security\n"));
 	printf(_("  --if-exists                  use IF EXISTS when dropping objects\n"));
 	printf(_("  --no-data-for-failed-tables  do not restore data of tables that could not be\n"
 			 "                               created\n"));

src/bin/pg_resetxlog/pg_resetxlog.c

@@ -1165,10 +1165,11 @@ static void
 usage(void)
 {
 	printf(_("%s resets the PostgreSQL transaction log.\n\n"), progname);
-	printf(_("Usage:\n  %s [OPTION]... {[-D] DATADIR}\n\n"), progname);
+	printf(_("Usage:\n  %s [OPTION]... DATADIR\n\n"), progname);
 	printf(_("Options:\n"));
 	printf(_("  -c XID,XID       set oldest and newest transactions bearing commit timestamp\n"));
 	printf(_("                   (zero in either value means no change)\n"));
+	printf(_(" [-D] DATADIR      data directory\n"));
 	printf(_("  -e XIDEPOCH      set next transaction ID epoch\n"));
 	printf(_("  -f               force update to be done\n"));
 	printf(_("  -l XLOGFILE      force minimum WAL starting location for new transaction log\n"));

src/bin/pg_rewind/pg_rewind.c

@@ -60,8 +60,8 @@ usage(const char *progname)
 	printf(_("Usage:\n  %s [OPTION]...\n\n"), progname);
 	printf(_("Options:\n"));
 	printf(_("  -D, --target-pgdata=DIRECTORY  existing data directory to modify\n"));
-	printf(_("      --source-pgdata=DIRECTORY  source data directory to sync with\n"));
-	printf(_("      --source-server=CONNSTR    source server to sync with\n"));
+	printf(_("      --source-pgdata=DIRECTORY  source data directory to synchronize with\n"));
+	printf(_("      --source-server=CONNSTR    source server to synchronize with\n"));
 	printf(_("  -n, --dry-run                  stop before modifying anything\n"));
 	printf(_("  -P, --progress                 write progress messages\n"));
 	printf(_("      --debug                    write a lot of debug messages\n"));

src/bin/pgbench/pgbench.c

@@ -373,8 +373,7 @@ usage(void)
 		 "  -f, --file=FILENAME      read transaction script from FILENAME\n"
 		   "  -j, --jobs=NUM           number of threads (default: 1)\n"
 		   "  -l, --log                write transaction times to log file\n"
-	"  -L, --latency-limit=NUM  count transactions lasting more than NUM ms\n"
-		   "                           as late.\n"
+	"  -L, --latency-limit=NUM  count transactions lasting more than NUM ms as late\n"
 		   "  -M, --protocol=simple|extended|prepared\n"
 		   "                           protocol for submitting queries (default: simple)\n"
 		   "  -n, --no-vacuum          do not run VACUUM before tests\n"

src/bin/psql/help.c

@@ -85,14 +85,15 @@ usage(unsigned short int pager)
 	fprintf(output, _("  -f, --file=FILENAME      execute commands from file, then exit\n"));
 	fprintf(output, _("  -l, --list               list available databases, then exit\n"));
 	fprintf(output, _("  -v, --set=, --variable=NAME=VALUE\n"
-					  "                           set psql variable NAME to VALUE e.g.: -v ON_ERROR_STOP=1\n"));
+					  "                           set psql variable NAME to VALUE\n"
+					  "                           (e.g., -v ON_ERROR_STOP=1)\n"));
 	fprintf(output, _("  -V, --version            output version information, then exit\n"));
 	fprintf(output, _("  -X, --no-psqlrc          do not read startup file (~/.psqlrc)\n"));
 	fprintf(output, _("  -1 (\"one\"), --single-transaction\n"
 					  "                           execute as a single transaction (if non-interactive)\n"));
 	fprintf(output, _("  -?, --help[=options]     show this help, then exit\n"));
-	fprintf(output, _("      --help=variables     show a list of all specially treated variables, then exit\n"));
-	fprintf(output, _("      --help=commands      show a list of backslash commands, then exit\n"));
+	fprintf(output, _("      --help=commands      list backslash commands, then exit\n"));
+	fprintf(output, _("      --help=variables     list special variables, then exit\n"));
 
 	fprintf(output, _("\nInput and output options:\n"));
 	fprintf(output, _("  -a, --echo-all           echo all input from script\n"));

src/bin/scripts/vacuumdb.c

@@ -936,15 +936,15 @@ help(const char *progname)
 	printf(_("  -e, --echo                      show the commands being sent to the server\n"));
 	printf(_("  -f, --full                      do full vacuuming\n"));
 	printf(_("  -F, --freeze                    freeze row transaction information\n"));
+	printf(_("  -j, --jobs=NUM                  use this many concurrent connections to vacuum\n"));
 	printf(_("  -q, --quiet                     don't write any messages\n"));
 	printf(_("  -t, --table='TABLE[(COLUMNS)]'  vacuum specific table(s) only\n"));
 	printf(_("  -v, --verbose                   write a lot of output\n"));
 	printf(_("  -V, --version                   output version information, then exit\n"));
 	printf(_("  -z, --analyze                   update optimizer statistics\n"));
-	printf(_("  -Z, --analyze-only              only update optimizer statistics;  no vacuum\n"));
-	printf(_("  -j, --jobs=NUM                  use this many concurrent connections to vacuum\n"));
+	printf(_("  -Z, --analyze-only              only update optimizer statistics; no vacuum\n"));
 	printf(_("      --analyze-in-stages         only update optimizer statistics, in multiple\n"
-			 "                                  stages for faster results;  no vacuum\n"));
+			 "                                  stages for faster results; no vacuum\n"));
 	printf(_("  -?, --help                      show this help, then exit\n"));
 	printf(_("\nConnection options:\n"));
 	printf(_("  -h, --host=HOSTNAME       database server host or socket directory\n"));