tests: avoid a multibyte tr portability problem

* tests/init.cfg (tr): New wrapper function.
See comments for details.  Reported by Norihiro Tanaka
in http://debbugs.gnu.org/18991

1 files changed, 9 insertions, 0 deletions

diff --git a/tests/init.cfg b/tests/init.cfg
index 75a94941..e7a23893 100644
--- a/tests/init.cfg
+++ b/tests/init.cfg
@@ -162,3 +162,12 @@ hex_printf_()
   printf $(printf '\\%o' \
     $(printf %s "$1"|sed 's,\\x\([0-9a-fA-F][0-9a-fA-F]\), 0x\1,g'))
 }
+
+# Wrap tr so that it always runs in the C locale.
+# Otherwise, in a multibyte locale, GNU tr (which is not multibyte-aware
+# as of 2014-11-08), would work differently than others.  For example,
+# this command, which was written with unibyte GNU tr in mind,
+#   LC_ALL=ja_JP.eucJP tr AB '\244\263'
+# would act like this with the multibyte tr from HP-UX and Solaris:
+#   LC_ALL=ja_JP.eucJP tr A  '\244\263'
+tr() { LC_ALL=C env -- tr "$@"; }