dev-lang/elixir: backport mksh fix

Reported-by: Maciej Barć
Fixed-by: Haelwenn Monnier
Closes: https://bugs.gentoo.org/729964
Package-Manager: Portage-3.0.12, Repoman-3.0.2
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>

dev-lang/elixir/elixir-1.11.2.ebuild

@@ -29,6 +29,7 @@ PATCHES=(
 	"${FILESDIR}"/${PN}-1.9.1-disable-network-tests.patch
 	"${FILESDIR}"/${PN}-1.10.3-no-Q.patch
 	"${FILESDIR}"/${PN}-1.10.3-epmd-daemon.patch
+	"${FILESDIR}"/${PN}-1.11.2-mksh.patch
 )
 
 src_install() {

dev-lang/elixir/files/elixir-1.11.2-mksh.patch

@@ -0,0 +1,81 @@
+From 69bb81635a77afb28419103bdb02867b48994d4a Mon Sep 17 00:00:00 2001
+From: "Haelwenn (lanodan) Monnier" <contact@hacktivis.me>
+Date: Wed, 9 Dec 2020 18:21:34 +0100
+Subject: [PATCH] bin/elixir: Rename erl() function to erl_set()
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+It conflicted with the erl executable for Korn-derived shells where a function
+can be used in `exec command`.
+
+It isn't clear which behavior is expected from reading the POSIX specification
+but "Shell Command Language § 2.9.1 Simple Commands" clears the usage of
+the term `command` quite well.
+And even with excluding functions from the `command` operand of `exec`,
+why are aliases accepted? (in most if not all shells)
+
+See: https://bugs.gentoo.org/729964
+---
+ bin/elixir | 28 ++++++++++++++--------------
+ 1 file changed, 14 insertions(+), 14 deletions(-)
+
+--- a/bin/elixir
++++ b/bin/elixir
+@@ -70,7 +70,7 @@ readlink_f () {
+ ERL=""
+ 
+ # Stores erl arguments preserving spaces/quotes (mimics an array)
+-erl () {
++erl_set () {
+   eval "E${E}=\$1"
+   E=$((E + 1))
+ }
+@@ -137,34 +137,34 @@ while [ $I -le $LENGTH ]; do
+         ;;
+     --cookie)
+         S=2
+-        erl "-setcookie"
+-        erl "$2"
++        erl_set "-setcookie"
++        erl_set "$2"
+         ;;
+     --sname|--name)
+         S=2
+-        erl "$(echo "$1" | cut -c 2-)"
+-        erl "$2"
++        erl_set "$(echo "$1" | cut -c 2-)"
++        erl_set "$2"
+         ;;
+     --erl-config)
+         S=2
+-        erl "-config"
+-        erl "$2"
++        erl_set "-config"
++        erl_set "$2"
+         ;;
+     --vm-args)
+         S=2
+-        erl "-args_file"
+-        erl "$2"
++        erl_set "-args_file"
++        erl_set "$2"
+         ;;
+     --boot)
+         S=2
+-        erl "-boot"
+-        erl "$2"
++        erl_set "-boot"
++        erl_set "$2"
+         ;;
+     --boot-var)
+         S=3
+-        erl "-boot_var"
+-        erl "$2"
+-        erl "$3"
++        erl_set "-boot_var"
++        erl_set "$2"
++        erl_set "$3"
+         ;;
+     --pipe-to)
+         S=3