From a341d6bfb585c2b07660b793b37a13ce781e79d3 Mon Sep 17 00:00:00 2001
From: Iain Patterson <me@iain.cx>
Date: Mon, 2 Feb 2015 16:51:41 +0000
Subject: [PATCH] Avoid bash 4 code.

Before bash 4 we can't use ^^ or ,, to transform to upper or lowercase.
Use tr instead.
---
 .profile.d/git-commit-tree.bashrc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.profile.d/git-commit-tree.bashrc b/.profile.d/git-commit-tree.bashrc
index 37ec8eb..f1aca2c 100644
--- a/.profile.d/git-commit-tree.bashrc
+++ b/.profile.d/git-commit-tree.bashrc
@@ -1,11 +1,11 @@
 # Set GIT_AUTHOR_NAME etc from dotfiles in the profile.
 function git_commit_tree() {
   local WHO=$1; shift
-  local who=${WHO,,}
+  local who="$(echo $WHO | tr '[[:upper:]]' '[[:lower:]]')"
   local WHAT=
 
   for WHAT in EMAIL NAME; do
-    local what=${WHAT,,}
+    local what="$(echo $WHAT | tr '[[:upper:]]' '[[:lower:]]')"
     local where=
 
     # Look in $HOME then $PROFILE_HOME.
-- 
2.20.1