From 0d79eeb3ab41cf49310ec53e6cf55ccbfe2f7e31 Mon Sep 17 00:00:00 2001
From: Tom Ryder <tom@sanctum.geek.nz>
Date: Fri, 30 Dec 2016 22:31:30 +1300
Subject: Fix a zsh-as-sh/ksh-specific issue

Very niche, but interesting to fix anyway
---
 zsh/profile.d/zsh.sh | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 zsh/profile.d/zsh.sh

(limited to 'zsh')

diff --git a/zsh/profile.d/zsh.sh b/zsh/profile.d/zsh.sh
new file mode 100644
index 00000000..47de6d4d
--- /dev/null
+++ b/zsh/profile.d/zsh.sh
@@ -0,0 +1,28 @@
+# Zsh before version 5.3.0 emulating POSIX sh(1) or Korn shell only sources the
+# interactive shell startup file described in ENV if it's set after
+# /etc/profile is sourced, but before ~/.profile is. The other shells I have
+# tried (including modern shells emulating POSIX sh(1)) wait until after
+# ~/.profile is read. This seems to have been fixed in Zsh commit ID fde365e,
+# which was followed by release 5.3.0.
+
+# Is this zsh masquerading as sh/ksh?
+[ -n "$ZSH_VERSION" ] || return
+case $ZSH_NAME in
+    sh|ksh) ;;
+    *) return ;;
+esac
+
+# Iterate through the zsh version number to see if it's at least 5.3.0; if not,
+# we'll have ~/.profile force sourcing $ENV
+if ! (
+    zvs=$ZSH_VERSION
+    for fv in 5 3 0 ; do
+        zv=${zvs%%[!0-9]*}
+        [ "$((zv > fv))" -eq 1 ] && exit 0
+        [ "$((zv < fv))" -eq 1 ] && exit 1
+        zvs=${zvs#*.}
+        [ -n "$zvs" ] || exit 0
+    done
+) ; then
+    ENV_FORCE=1
+fi
-- 
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