From 997bc1dc0db12ee5791bfb74f07c91ce10ed7cfd Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@parabola.nu>
Date: Sat, 25 Mar 2017 12:34:38 -0400
Subject: lib/common.sh: add 'lock_close'; use it as appropriate.

`lock_close FD` is easier to remember than 'exec FD>&-`; and is especially
easier if FD is a variable (though that isn't actually taken advantage of
here).

This uses Bash 4.1+ `exec {var}>&-`, rather than the clunkier
`eval exec "$var>&-"` that was necessary in older versions of Bash.
Thanks to Dave Reisner for pointing this new bit of syntax out to me
the last time I submitted this (back in 2014, 4.1 had just come out).
---
 lib/common.sh | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'lib')

diff --git a/lib/common.sh b/lib/common.sh
index 599be54..689772f 100644
--- a/lib/common.sh
+++ b/lib/common.sh
@@ -158,6 +158,14 @@ slock() {
 	fi
 }
 
+##
+#  usage : lock_close( $fd )
+##
+lock_close() {
+	local fd=$1
+	exec {fd}>&-
+}
+
 ##
 # usage: pkgver_equal( $pkgver1, $pkgver2 )
 ##
-- 
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