From d86483b0c4be5298c96ccaaa62670a04b018af42 Mon Sep 17 00:00:00 2001
From: Jim Meyering <address@hidden>
Date: Thu, 29 Jun 2017 18:06:11 -0700
Subject: [PATCH] tests: avoid false failure when run in qemu user mode

* tests/filename-lineno.pl: Derive the program name that grep
will use in diagnostics, based on a suggestion from Assaf Gordon.
Reported by Bruno Haible in http://bugs.gnu.org/27532
---
 tests/filename-lineno.pl | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tests/filename-lineno.pl b/tests/filename-lineno.pl
index 8eead57..6cc86b7 100755
--- a/tests/filename-lineno.pl
+++ b/tests/filename-lineno.pl
@@ -24,6 +24,9 @@ use strict;
 (my $program_name = $0) =~ s|.*/||;

 my $prog = 'grep';
+my $full_prog_name = `$prog --no-such-option 2>&1`;
+$full_prog_name =~ s/:.*//s;
+$prog = $full_prog_name if $full_prog_name;

 # Turn off localization of executable's output.
 @ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;
-- 
2.13.0