[PATCH] devel/man-to-mdwn.pl: portable locale environment variable setting

diff --git a/de/6c0d0f44a348a8c318ff795967dfb1e541d1fd b/de/6c0d0f44a348a8c318ff795967dfb1e541d1fd
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@@ -0,0 +1,80 @@
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+From: Tomi Ollila <tomi.ollila@iki.fi>\r
+To: notmuch@notmuchmail.org\r
+Cc: tomi.ollila@iki.fi\r
+Subject: [PATCH] devel/man-to-mdwn.pl: portable locale environment variable\r
+ setting\r
+Date: Thu,  9 Jun 2016 22:35:12 +0300\r
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+\r
+Setting locale environment variables (LC_* and LANG) to e.g.\r
+en_US.utf8 works fine on Linux, and that is what locale -a\r
+returns (in Linux). However this does not work e.g. in some *BSD\r
+systems.\r
+In these systems, en_US.UTF-8 works. This also works in Linux\r
+systems (which may look like a surprising thing on the first sight(*)).\r
+But that *UTF-8 format seems to be widely used in the Linux system:\r
+Grep it through the files in /etc/, for example.\r
+\r
+Easy way to test: Run the following command lines. First should\r
+complain about setting locale failed, and second should not.\r
+\r
+$ LC_ALL=en_US.UTF-1 perl -e ''\r
+$ LC_ALL=en_US.UTF-8 perl -e ''\r
+\r
+(*) and who knows what the "standard" is...\r
+---\r
+ devel/man-to-mdwn.pl | 2 +-\r
+ 1 file changed, 1 insertion(+), 1 deletion(-)\r
+\r
+diff --git a/devel/man-to-mdwn.pl b/devel/man-to-mdwn.pl\r
+index f9d31b73a237..a3c40695c4ea 100755\r
+--- a/devel/man-to-mdwn.pl\r
++++ b/devel/man-to-mdwn.pl\r
+@@ -66,7 +66,7 @@ while (my ($k, $v) = each %fhash)\r
+ \r
+     my @lines;\r
+     open I, '-|', qw/env -i/, "PATH=$ENV{PATH}",\r
+-      qw/TERM=vt100 LANG=en_US.utf8 LC_ALL=en_US.utf8/,\r
++      qw/TERM=vt100 LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8/,\r
+       qw/GROFF_NO_SGR=1 MAN_KEEP_FORMATTING=1 MANWIDTH=80/,\r
+       qw/man/, $v or die "$!";\r
+     binmode I, ':utf8';\r
+-- \r
+2.8.2\r
+\r