pg_regress-launcher.patch

 src/test/regress/pg_regress.c      |    6 ++++++
 src/test/regress/pg_regress.h      |    1 +
 src/test/regress/pg_regress_main.c |    7 ++++++-
 3 files changed, 13 insertions(+), 1 deletions(-)

diff --git a/src/test/regress/pg_regress.c b/src/test/regress/pg_regress.c
index 84aff94..b6af2c8 100644
--- a/src/test/regress/pg_regress.c
+++ b/src/test/regress/pg_regress.c
@@ -84,6 +84,7 @@ bool		debug = false;
 char	   *inputdir = ".";
 char	   *outputdir = ".";
 char	   *psqldir = PGBINDIR;
+char	   *launcher = NULL;
 static _stringlist *loadlanguage = NULL;
 static int	max_connections = 0;
 static char *encoding = NULL;
@@ -1871,6 +1872,7 @@ help(void)
 	printf(_("  --dlpath=DIR              look for dynamic libraries in DIR\n"));
 	printf(_("  --temp-install=DIR        create a temporary installation in DIR\n"));
 	printf(_("  --use-existing            use an existing installation\n"));
+	printf(_("  --launcher=COMMAND        use COMMAND as the launcher of psql\n"));
 	printf(_("\n"));
 	printf(_("Options for \"temp-install\" mode:\n"));
 	printf(_("  --no-locale               use C locale\n"));
@@ -1922,6 +1924,7 @@ regression_main(int argc, char *argv[], init_function ifunc, test_function tfunc
 		{"create-role", required_argument, NULL, 18},
 		{"temp-config", required_argument, NULL, 19},
 		{"use-existing", no_argument, NULL, 20},
+		{"launcher", required_argument, NULL, 21},
 		{NULL, 0, NULL, 0}
 	};
 
@@ -2015,6 +2018,9 @@ regression_main(int argc, char *argv[], init_function ifunc, test_function tfunc
 			case 20:
 				use_existing = true;
 				break;
+			case 21:
+				launcher = strdup(optarg);
+				break;
 			default:
 				/* getopt_long already emitted a complaint */
 				fprintf(stderr, _("\nTry \"%s -h\" for more information.\n"),
diff --git a/src/test/regress/pg_regress.h b/src/test/regress/pg_regress.h
index 3f46037..f2844f8 100644
--- a/src/test/regress/pg_regress.h
+++ b/src/test/regress/pg_regress.h
@@ -41,6 +41,7 @@ extern _stringlist *dblist;
 extern bool debug;
 extern char *inputdir;
 extern char *outputdir;
+extern char *launcher;
 
 /*
  * This should not be global but every module should be able to read command
diff --git a/src/test/regress/pg_regress_main.c b/src/test/regress/pg_regress_main.c
index c2114b9..afe501b 100644
--- a/src/test/regress/pg_regress_main.c
+++ b/src/test/regress/pg_regress_main.c
@@ -33,6 +33,7 @@ psql_start_test(const char *testname,
 	char		outfile[MAXPGPATH];
 	char		expectfile[MAXPGPATH];
 	char		psql_cmd[MAXPGPATH * 3];
+	size_t		offset = 0;
 
 	/*
 	 * Look for files in the output dir first, consistent with a vpath search.
@@ -58,7 +59,11 @@ psql_start_test(const char *testname,
 	add_stringlist_item(resultfiles, outfile);
 	add_stringlist_item(expectfiles, expectfile);
 
-	snprintf(psql_cmd, sizeof(psql_cmd),
+	if (launcher)
+		offset += snprintf(psql_cmd + offset, sizeof(psql_cmd) - offset,
+						   "%s ", launcher);
+
+	snprintf(psql_cmd + offset, sizeof(psql_cmd) - offset,
 			 SYSTEMQUOTE "\"%s%spsql\" -X -a -q -d \"%s\" < \"%s\" > \"%s\" 2>&1" SYSTEMQUOTE,
 			 psqldir ? psqldir : "",
 			 psqldir ? "/" : "",