Declare global arrays from helper functions

[etc/zsh.git] / .zsh / util

diff --git a/.zsh/util b/.zsh/util
index 6c8970a86827ade89457848c592219c94c6e0811..ed37cb49e9a107bd169f3c2f95c479c8c1f61c41 100644 (file)
--- a/.zsh/util
+++ b/.zsh/util
@@ -2,7 +2,7 @@
 #
 # Miscellaneous utility functions
 #
-# Copyright © 1994–2008 martin f. krafft <madduck@madduck.net>
+# Copyright © 1994–2017 martin f. krafft <madduck@madduck.net>
 # Released under the terms of the Artistic Licence 2.0
 #
 # Source repository: http://git.madduck.net/v/etc/zsh.git
@@ -12,4 +12,22 @@ is_root() {
   test ${EUID:?} -eq 0
 }
 
+array_prepend() {
+  local arrayname="$1"; shift
+  local i
+  for i; do
+    eval "typeset -ga $arrayname=(\$i \${$arrayname[@]/\$i})"
+  done
+}
+
+array_append() {
+  local arrayname="$1"; shift
+  local i
+  for i; do
+    eval "typeset -ga $arrayname=(\${$arrayname[@]/\$i} \$i)"
+  done
+}
+
+function trace() { ( eval "set -x; $@"; ) }
+
 # vim:ft=zsh